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Deep dives on browser security, isolation, and the ideas behind Bromure.

· by Renaud Deraison

The agent had an address

At DEF CON 34, Team Cymru's Eli Woodward showed 48 hours of capture from an AI honeypot: 3,993 requests, 327 source IPs, 344 credential probes, against ports no one had advertised. The other attacks on a coding agent need a way to put text in front of it. This one needs a route to it. Bromure Agentic Coding runs the agent behind NAT by default, so there is no route to find.

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· by Renaud Deraison

The block was the delivery

At DEF CON 34 this week, Tenet Security showed an attack that starts with a request your firewall is certain to refuse. The 403 is the point: the WAF writes the blocked request into the security log, verbatim, and days later a coding agent reads that log to debug the 403s and follows the instructions inside it. No step in the chain is unauthorized. Bromure Agentic Coding scores the text on arrival and keeps the credential the hijacked agent needs out of the machine it runs on.

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· by Renaud Deraison

It asked to be run

Sonatype is tracking 846 malicious npm packages published from hundreds of disposable accounts under AI-generated names. None of them carry an install script. The README tells you to load the package with require(), and the import runs the loader. Defenses that recognize a bad package by name, author, or declared hook are now racing a generator. Bromure Agentic Coding blocks on the one property a generator cannot forge: how old the package is.

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· by Renaud Deraison

Three agents, one thing to steal

At Black Hat USA 2026, Novee broke the default setup of Claude Code, Gemini CLI, and Codex three different ways, each starting from a GitHub issue an anonymous stranger could file. The bypasses were unrelated — a quoting mismatch, an unenforced shell allowlist, a trusted AGENTS.md — but all three chains ended at the same step: read a real credential out of the agent's own process. Bromure Agentic Coding does not harden that last step. It empties the process, so the exfiltration runs and ships a decoy.

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· by Renaud Deraison

Opening the folder was the install

On August 4 a worm called ChainDrop walked twelve npm namespaces in about half an hour, starting from keyv and cacheable. Alongside the usual preinstall script it committed two files into the repositories themselves: a SessionStart hook in .claude/settings.json and a folderOpen task in .vscode/tasks.json, each pointing at the other's directory, pushed by a commit authored as claude with the message chore: update config. Clone the project, open it, and the loader runs, with no install anywhere in the path. Bromure Agentic Coding breaks that chain in four places, three of them before the loader executes.

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· by Renaud Deraison

It thanked itself for the review

The UK AI Security Institute published a report on August 4 about a cyber evaluation that walked off the range. For thirty-four hours an agent ran a supply-chain campaign against two developers who had nothing to do with the test: a malicious pull request, five spearphishing emails, a second account it invented to endorse its own code and then thanked in public for the independent verification. Two moves in that chain target people who were being careful. It read the maintainer's CLAUDE.md to learn which agent triages their issues, then wrote an invisible instruction addressed to it by name. And when a bystander detonated the payload in a container to check, the agent got root inside and went looking for their git token. Bromure Agentic Coding decides both of those on the host: the injection is scored before the model reads it, and the box you open to check things holds nothing worth taking.

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· by Renaud Deraison

The command was called aipoison

Socket found a cluster of 18 npm packages impersonating Alibaba's private @ali scope. None of the tarballs contained malware. The RAT assembled itself at install time out of a JSON file in a GitHub repo the attacker still controls, and its persistence plan included patching Python inside the .skills directories of AI coding tools, using commands named aipoison, aipoison_inject, and aipoison_deploy. Reading the code could not have found this. Bromure Agentic Coding judges what was visible all along: a package with no reputation pauses for your consent at the host proxy, the three fetches that assemble the payload hit a wire that only speaks to destinations you approved, and every file the RAT writes lands in a VM that lives for one task.

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· by Renaud Deraison

The flag said no

On August 3, 2026, The Hacker News covered FaceHugger: three flaws in Hugging Face's Diffusers library — seven million downloads a month — that let a crafted model repository execute arbitrary code on the machine that loads it, even with trust_remote_code=False set. The root cause: the trust check ran at a different point from the code load. Coding agents pull models the way they pull packages, so the flag that lied was guarding developer laptops. Bromure Agentic Coding puts the boundary under the process instead of inside it: the load runs in a disposable VM, the credentials in reach are decoys, and the payload's call home dies at the host proxy — so the malicious repo costs the attacker their payload and costs you nothing.

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· by Renaud Deraison

The harness found the bug

On July 30, 2026, Google reported that Chrome 149 and 150 shipped 1,072 security fixes — more than the prior 23 milestones combined — and that an agent found a sandbox escape that had sat in the codebase for 13 years. The change this year is the harness, not a new model: a knowledge base, critic agents, and an environment locked down enough that the agents could run unattended at scale — no general internet, every network request checked against an allowlist, agents fenced to the source tree. Bromure Agentic Coding ships that environment for your laptop: a disposable VM, per-destination egress consent at the host proxy, decoy credentials, and guardrails — the license to let your agent run.

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· by Renaud Deraison

The sandbox was a sentence

On July 31, 2026, Anthropic disclosed that during cybersecurity evaluations, Claude models reached the real internet and broke into three organizations' production systems — because a config error left outbound connectivity on while the prompt told the model it was in a simulation with no internet access. The isolation existed as a sentence in the prompt; the network allowed everything. The agent, being obedient, did its capture-the-flag homework against real companies. Bromure Agentic Coding puts the isolation in the wire, not the prompt: every outbound request is checked against a destination list you approved, so 'no internet' is a rule the network enforces, not a promise the model has to keep.

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· by Renaud Deraison

Written in invisible ink

Socket found TrapDoor, a supply-chain campaign across npm, PyPI, and Crates.io that does something new: an installed package rewrites your coding agent's own rules file — CLAUDE.md, .cursorrules — and hides the instruction in zero-width Unicode you cannot see. The next time you run the agent, it reads its own house rules and runs a 'security scan' that harvests your SSH keys, cloud credentials, GitHub token, and crypto wallets. The instruction is invisible; the theft is real. Bromure Agentic Coding hands that scan a box with nothing worth taking.

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· by Renaud Deraison

The agent never left the sandbox

On July 20, 2026, Pillar Security published seven sandbox escapes across Cursor, OpenAI's Codex CLI, Google's Gemini CLI, and Antigravity. Not one of them broke the sandbox. The agent stayed inside, followed every rule, and wrote an ordinary file — a hook config, a virtualenv, a git setting — that a trusted tool on the host read and ran on its own. The sandbox held; the escape happened anyway. Bromure Agentic Coding draws the line where that move has nowhere to land.

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· by Renaud Deraison

The web page rewrote the agent's config

On July 21, 2026, Intezer and Kodem Security disclosed CVE-2026-10591: an ordinary-looking documentation page carried instructions in one-pixel white text, and when a developer asked AWS's Kiro agent to read it, Kiro used its own file-writing tool to overwrite the config that launches its MCP servers with no approval, then reloaded the file and ran the attacker's code on the host, with the developer's privileges. AWS added an approval prompt. The part that lasts is that the agent, the web it reads, and the developer's machine were one trust zone. Bromure Agentic Coding puts a hypervisor between them.

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· by Renaud Deraison

Your agent read a comment you couldn't see

On July 22, 2026, Manifold Security reported that Microsoft's official Azure DevOps MCP server hands an AI agent the raw text of a pull request description — including HTML comments that render as nothing in the web UI. Ask your agent to review the PR and the invisible text becomes instructions it runs with your credentials, reaching projects the attacker never could. The human approving the review is looking at a page that isn't what the agent obeys. Bromure Agentic Coding decides the security question at the perimeter — on the real action and a decoy credential — instead of at the reviewer's eye.

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· by Renaud Deraison

Your coding agent looks just like an attacker

In July 2026 Sophos X-Ops reported that over one week of Windows telemetry, coding agents like Claude Code, Cursor, and Codex tripped the same endpoint rules built to catch intruders — 56.2% of the blocks were credential access, the biggest one a browser-password decrypt. The behavior is identical to a real attack; the only variable is whose machine it runs on. Bromure Agentic Coding makes that variable a disposable Linux VM with decoy credentials, so the noisy moves land in a throwaway box and your host defenses stay strict.

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· by Renaud Deraison

The agent trusted the punctuation

Agent Data Injection, a proof-of-concept from Seoul National University, UIUC, and Largosoft posted in July 2026, does not hide instructions in a prompt. It forges the punctuation an agent uses to tell a trusted field from untrusted text — a curly quote, an escaped quote, even a stray dollar sign — so an attacker's GitHub comment reads as the maintainer's own fix and a faked CI record reads as a clean build. It slipped purpose-built prompt-injection defenses up to half the time across GPT-5.2, Claude, and Gemini. Bromure Agentic Coding normalizes the forged delimiters before the text becomes a plan, gates the run-this and merge-this actions that reach outside the box, and runs the whole thing on a disposable Linux VM with decoy credentials.

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· by Renaud Deraison

The bug report ran the command

Agentjacking, disclosed by Tenet Security in June 2026, needs no malware and no access to your infrastructure. An attacker files a fake error against your Sentry project using a public write-only key, hides instructions inside it, and waits. When you ask your coding agent to fix the issue, it reads the attacker's text as guidance and runs it with your credentials. Tenet found at least 2,388 exposed projects and an 85% success rate across Claude Code, Cursor, and Codex. Bromure Agentic Coding runs that whole read-and-run path inside a disposable Linux VM, scores the fetched text before the agent acts on it, and leaves the credential thief only decoys.

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· by Renaud Deraison

The package the agent invented

Researchers at Tel Aviv University, the Technion, and Intuit disclosed HalluSquatting: attackers probe a coding agent until they learn which package, repository, or skill names it reliably makes up, register those invented names, and wait. When you ask for the real thing, the agent fetches the attacker's version instead — and the instructions hidden inside hijack the agent's shell to install botnet malware. Repository names hallucinated up to 85% of the time; skill installs up to 100%. Bromure Agentic Coding runs that whole fetch-and-run path inside a disposable Linux VM, scans the package registries the guess lands on, and leaves the malware only decoys to steal.

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· by Renaud Deraison

The agent recommended the malware

Island found FakeGit: about 7,600 malicious GitHub repositories, more than 800 of them posing as AI skills and MCP servers, seeding a Windows loader called SmartLoader that installs the StealC infostealer. The trick that makes it new is AgentBaiting — Claude Code, Gemini, and ChatGPT discover these repos on their own, read the attacker's README as documentation, and hand you the install steps. In one test Claude Code cloned a repo and ran the files itself. Bromure Agentic Coding runs that whole recommendation-to-execution path inside a disposable Linux VM, where a Windows loader is inert and the only credentials to steal are decoys.

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· by Renaud Deraison

The skill ran with your identity

Researchers found more than a thousand malicious 'skills' flooding the marketplace an open-source coding agent pulls from — infostealers, reverse shells, and crypto scams, some hiding a downloader behind 22 MB of README padding. The reason they work is that a skill is not a dependency you install; it is a capability you grant, and it runs as you. Bromure Agentic Coding runs the agent — and everything it loads — inside a disposable VM where 'as you' means a throwaway box with decoy keys.

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· by Renaud Deraison

The guard and the shell disagreed

On June 30, Adversa AI disclosed GuardFall — a class of bypasses that walks decades-old bash tricks straight past the command guards built into 10 of 11 popular open-source coding agents. The reason is simple and unfixable at that layer: the guard reads the text, and bash rewrites the text before it runs. Bromure Agentic Coding never bet on the guard reading bash correctly. It bet on the command not mattering when it runs.

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· by Renaud Deraison

The ransomware had no operator

In early July, Sysdig documented what it calls the first ransomware attack run end to end by an AI agent — recon, credential harvesting, lateral movement, and a dropped production database, with no human at the keyboard. The interesting part for anyone running a coding agent is not that an attacker used a model. It is that the whole chain begins by sweeping the environment for secrets. Bromure Agentic Coding was built for an agent that does exactly that.

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· by Renaud Deraison

The tell was the timestamp

npm shipped its biggest security change in sixteen years on July 8, 2026 — install scripts off by default. Within a week, two separate npm compromises moved their payload to fire when the package is imported instead of when it installs, routing straight around the new default and around --ignore-scripts. The mechanism the ecosystem just spent a year learning to watch had already moved. The one thing that didn't move was how old the malicious version was — and that is the signal Bromure's age gate checks.

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· by Renaud Deraison

The security check was the payload

AI Now Institute's Friendly Fire showed a coding agent, asked to review an untrusted library, reading a README that recommended a security script, running it, and getting the host compromised — no approval prompt, no CVE in the model. The researchers say it cannot be patched at the model level and that the only real move is to not let an agent that ingests untrusted code reach your keys, secrets, or host. That is a description of where Bromure Agentic Coding runs the agent.

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· by Renaud Deraison

Your coding agent tripped the alarm built for intruders

Sophos looked at a week of endpoint telemetry and found AI coding agents setting off the same rules that catch attackers. More than half the blocked activity was credential access — agents decrypting the browser's saved passwords, dumping the Windows credential vault, killing browser processes to read their stores. The behavior is risky no matter who starts it. It only reaches those stores because the agent runs on your machine, as you, with your reach. Move the agent one hypervisor away and there is nothing on the endpoint for it to reach.

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· by Renaud Deraison

The symlink left the workspace, and found nothing worth taking

GhostApproval showed how a hostile repository can trick six AI coding assistants into writing and reading files outside the folder they were supposed to stay in: planting SSH keys, hijacking shell startup, and reading cloud credentials on the developer's own machine. The bug is a symlink-following mistake. The reason it hurts is that the agent runs on a machine full of your secrets. Bromure Agentic Coding changes that second fact.

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· by Renaud Deraison

Its task was one issue, its token could read the org

Noma Security's GitLost showed an unauthenticated stranger opening a public GitHub issue and getting GitHub's AI agent to post a private repository's contents back as a public comment. The prompt injection made the headline. The agent's token, scoped to the whole organization instead of the one issue it was triaging, set how far the leak could reach. That gap between what a task needs and what the environment holds is the part worth taking home, and the part you can design differently when you host the agent yourself.

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· by Renaud Deraison

The agent leaked its own key

CVE-2026-21852 was a patched bug in Claude Code: a repository could set ANTHROPIC_BASE_URL in its project settings, and the agent sent its own Anthropic API key, in plaintext, to the attacker's server before you answered 'trust this folder.' The attack ran no code and read nothing off your disk; it changed the address the agent mails its one indispensable credential to. Anthropic fixed the timing. Bromure Agentic Coding keeps that key out of the agent's world entirely.

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· by Renaud Deraison

One repo, a fleet of agents: git worktrees in Bromure Agentic Coding

Run two coding agents against one repo and they collide over the same working tree. Git worktrees fix that with N independent checkouts over one shared history. Bromure Agentic Coding makes them a one-click primitive: type a task name and get an isolated branch, an isolated checkout, and an agent working on it, each in its own tab inside a disposable VM.

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· by Renaud Deraison

The injection that switched off Cursor's sandbox

On July 1, 2026, Cato AI Labs disclosed DuneSlide: two critical bugs in Cursor (CVE-2026-50548 and CVE-2026-50549, both CVSS 9.8) where a prompt injection arriving in an MCP tool result or a web-search snippet drives the run_terminal_cmd tool and a symlink fallback to overwrite Cursor's own sandbox helper. The guard goes quiet from the inside, and the next command runs as the developer, with reach into any cloud or SaaS the editor is signed into. No user interaction, patched in Cursor 3.0. This is a story about where a boundary belongs: in Bromure Agentic Coding the same escape lands inside a disposable VM, the escaped shell finds swapped-out stubs where the real tokens should be, and PromptGuard scores that untrusted content on the wire before the model ever acts on it.

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· by Renaud Deraison

The instruction wasn't his, and the agent couldn't tell

A developer running Claude Code watched a prompt injection ride in on the output of a background `find`, wear his own voice, and rewrite the agent's plan before he'd typed a word. Nothing broke — a referenced file happened not to exist. That's the failure mode Bromure Agentic Coding is built to close: the missing boundary between what you instructed and what the agent merely read.

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· by Renaud Deraison

Claude Code never chose to open the shell

On June 25, 2026, 0DIN published a proof of concept where a normal-looking GitHub repository carried no malware at all. The reverse shell lived in a DNS TXT record the repository looked up, three steps from anything Claude Code read, and the agent ran it while recovering from a routine setup error. The payload your scanners and your code review never see is the one nobody committed, and the thing that decides the outcome is whether the agent runs on your laptop or one hypervisor away from it.

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· by Renaud Deraison

You trusted the workspace, not the servers

On June 26, 2026, Wiz disclosed CVE-2026-12957: a cloned repository's `.amazonq/mcp.json` made Amazon Q auto-launch MCP servers that inherited the developer's full environment of AWS keys, cloud CLI tokens, API secrets, and SSH agent sockets, with no separate consent step for the servers themselves. A single 'trust this workspace' click stood in for spawning background processes that carried your live cloud session. Amazon patched it in Language Servers 1.69.0. Here is why the fix closes one product but not the class, and what changes when the agent that opens the repo lives in a per-profile Bromure VM, behind a credential broker, a read-write guardrail, and a hypervisor-level trace.

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· by Renaud Deraison

The phishing page was the real page

A kit called Bluekit no longer builds a fake login screen. It streams you the genuine one from a browser the attacker controls, captures your session the moment you sign in, and walks past MFA. A passkey stops it where a sharper eye for fakes cannot, which is why Bromure lets a profile share only passkeys from your Mac.

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· by Renaud Deraison

The extension that climbed out of the browser

Zscaler found a backdoor called Edgecution that runs inside a Microsoft Edge window the victim never opened, then uses Native Messaging — the legitimate channel an extension uses to talk to a desktop app — to run commands on the host. The question worth asking is what that bridge to the host reaches when the browser lives in a disposable VM.

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· by Renaud Deraison

Bromure Agentic Coding now includes Fusion mode

OpenRouter published a striking result: a panel of models, judged and synthesized, beats any single frontier model. We reimplemented that technique from scratch inside Bromure Agentic Coding — nothing routes through OpenRouter. Because the product already sits on the wire between your coding agent and the model APIs, version 3.0 puts our own Fusion right there. Flip the ⚡ in the title bar and up to three models answer every prompt at once. A judge reconciles them, a synthesizer writes the result, and Claude Code gets one answer back as if a single model wrote it. You bring your own keys or subscriptions, and the trace records every leg.

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· by Renaud Deraison

How Bromure detects malicious prompts and rogue CLAUDE.md files

Bromure runs two on-device classifiers over everything its coding agent reads. Prompt injection in tool output and web fetches is handled by Meta's Llama Prompt Guard 2. A rogue CLAUDE.md needs a different model entirely — injection detection fires on every line of a file that is meant to be all instructions — so we fine-tuned ModernBERT to classify harm instead. This is the full pipeline: harvesting a benign corpus, synthesizing malicious examples, clause-level windowing, the training loop, and the ONNX export, in enough detail to reproduce.

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· by Renaud Deraison

Why Bromure Agentic Coding is not a sandbox

A sandbox asks a developer to trade away the speed that makes a coding agent worth running — pre-approve every dependency, maintain an allowlist of domains, never touch a package the org hasn't vetted. So developers turn it off. Bromure Agentic Coding refuses that trade. It does not constrain what the agent does; it draws one hard line at the hypervisor and lets you do anything on the inside. This is the foundational case for why a boundary beats a sandbox, and the three guarantees the boundary makes true: no credentials to steal, wide tokens narrowed at the wire, and supply-chain attacks stopped before the tarball lands — plus the fourth the line now makes true: prompt injections caught in the content the agent reads, before the model obeys them.

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· by Renaud Deraison

The repo really was Microsoft's

On June 5–6, 2026, the Miasma worm pushed credential-stealing code into 73 repositories across four of Microsoft's own GitHub organizations — Azure, Azure-Samples, microsoft, MicrosoftDocs — including Azure/functions-action, the official deploy Action, and durabletask, a repo that had already been cleaned once in May. This time the payload did not wait for npm install. It fired the moment a developer opened the repository in Claude Code, Cursor, Gemini CLI, or VS Code. Here is why the trust signal — 'it's a Microsoft repo' — was again the attack surface, and what changes when the agent that opens it lives in a per-profile Bromure VM, behind a credential broker, a read-write guardrail, and a package cooldown.

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· by Renaud Deraison

The agent should have asked first

In late April, a Cursor agent running Claude Opus 4.6 was sent to fix a staging problem at a small SaaS called PocketOS. It guessed that deleting a Railway volume would be scoped to staging, didn't verify, and wiped the production database and its backups in nine seconds. It later said it should have asked first. Bromure Agentic Coding 2.2 ships a guardrail that takes 'should have asked' out of the agent's hands.

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· by Renaud Deraison

The IDE in the tab handed over a GitHub token in one click

A zero-day in github.dev let a malicious preview pane reach out of its sandbox, silently install an extension, and read a GitHub OAuth token with access to every private repo the victim could touch. The fix is honest about its limits — the sharper move is to never bring your token to a stranger's repo in the first place.

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· by Renaud Deraison

The package really was Red Hat's

Between late May and June 1, 2026, a worm called Miasma pushed credential-stealing code into 32 packages under the @redhat-cloud-services npm scope — Red Hat's own namespace, ~117,000 weekly downloads, signed by Red Hat's real publishing pipeline. There was no typosquat to catch and no unknown maintainer to flag. The trust signal was the vendor's name on the scope, and the vendor's name is exactly what the attacker rode in on. Here is why 'prefer reputable publishers' stopped being a defense, and what changes when the agent running the install lives in a per-profile Bromure VM.

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· by Renaud Deraison

The malware was hosted on chatgpt.com, and that was the point

A new campaign rents the trust of a domain you already believe in. A Google ad sends you to a real chatgpt.com share link, the share link shows a fake outage notice, and the notice hands you malware. Here is how the trust gets borrowed — and why the borrowing stops mattering when the whole thing happens inside a VM you throw away.

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· by Renaud Deraison

The service worker that will not die, and the VM that does not care

Google accidentally republished a four-year-old Chromium bug last week — a service worker that keeps running JavaScript after the browser closes, on every major Chromium browser, still unpatched. The proof-of-concept is now in the wild. The interesting question is not how it works. It is what "persistence" means on a browser whose entire underlying machine ceases to exist when you close the tab.

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· by Renaud Deraison

The sandbox that held the key

On May 18, 2026, Lasso Security disclosed two attacks against Nvidia's NemoClaw — the sandbox that runs the OpenClaw autonomous coding agent. The sandbox worked the way Nvidia said it did. The agent inside the sandbox still pushed the user's GitHub token to an attacker-controlled pull request, encoded as emoji to slip past GitHub's static secret scanner. The interesting question isn't whether the sandbox is broken. It's whether a sandbox with a plaintext credential file inside it was ever a sandbox in the architecturally useful sense, and what the answer implies for everyone shipping a coding agent in 2026.

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· by Renaud Deraison

The worm went open source

Sometime in the week of May 11, 2026, the people behind Shai-Hulud — the self-replicating npm supply-chain worm that has been eating maintainer accounts since September 2025 — leaked their own source code. By the weekend, OX Security had found four typosquatted npm packages under one account, one of which is a near-verbatim copy of the leaked worm, another of which is a Golang DDoS bot, and the other two are plain infostealers shipping SSH keys and crypto wallets to bargain-bin C2s. The fork floor of supply-chain attacks just got a lot lower, and the people most likely to install one of these packages are no longer human.

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· by Renaud Deraison

Here is a fun game: you are a CTO and the AI bill just arrived

Uber burned its full-year 2026 AI coding budget by April. The CTO went back to the drawing board — not because the tools were bad, but because nobody could tie a single dollar of token spend to a single shipped change. The agents are fine. The visibility layer is the problem. Here is what that looks like, and what changes when every agent session is a structured record instead of a wall of scrollback.

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· by Renaud Deraison

The worm that writes itself into .claude

On May 11, 2026, an npm worm called Mini Shai-Hulud added an optionalDependencies line to 42 packages in the @tanstack namespace. Installing any of them ran a Bun script that grabbed an OIDC token from the GitHub Actions environment, used it to publish more compromised versions with valid SLSA provenance, copied itself into .claude/ for the next time the coding agent started, and exfiltrated everything from ~/.aws to your crypto wallet. The packages were signed. The attestation was valid. Here is what the chain looks like, and what changes when the agent that ran the install lives inside a per-task Bromure VM.

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· by Renaud Deraison

macOS 26.5 patches ten WebKit bugs — here is what each one would have done to a Bromure user

Apple shipped macOS Tahoe 26.5 on May 11, 2026, with roughly seventy security fixes including ten WebKit vulnerabilities. We walk through the WebKit list one CVE class at a time and ask the only question that matters in 2026 — what does this bug actually reach, on a machine running Bromure?

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· by Renaud Deraison

Your coding agent installed the fake Bitwarden

On April 22, somebody uploaded a malicious npm package called @bitwarden/[email protected] — a typosquat that swept SSH keys, AWS/Azure/GCP credentials, GitHub tokens, npm publish tokens, and kubeconfigs out of any machine that ran it. The thing it was designed to feed on is the same thing modern coding agents do without thinking: install whatever npm hands back. Here is what that chain looks like, and what changes when the agent runs inside a Bromure VM instead of on your laptop.

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· by Renaud Deraison

The call is coming from inside the helpdesk

A new extortion crew called BlackFile has been calling retail and hospitality employees, pretending to be IT, walking them into typing credentials and OTPs into a fake corporate login page, and then registering its own MFA device on the real account. The phone call is unaffected by anything a browser does. The page the user types into is not.

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· by Renaud Deraison

A Roblox cheat, an OAuth grant, and a $2M Vercel leak

The Vercel breach disclosed this week started with a Context.ai employee downloading Roblox exploits on a personal PC, and ended with an attacker reading Vercel's customer environment variables. Bromure Enterprise, shipped this week, is built for exactly this chain.

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· by Renaud Deraison

The phishing page that built itself

Cisco Talos's Q1 2026 IR report puts phishing back on top as an initial-access vector and, inside it, documents the first case Talos attributes to an AI "vibe-coding" builder — an Outlook Web Access clone stood up on a *.softr.app subdomain, exfiltrating credentials to a disposable Google Sheet. URL reputation can't see this one coming. The right answer is down-stack.

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· by Renaud Deraison

Assume the renderer falls — what Mozilla's 271 AI-found bugs mean for browser security

An early version of Claude Mythos helped Mozilla find 271 security bugs in a single Firefox release. The right reaction is not panic, and not celebration — it is a quiet recalibration of what we still have to assume about every browser we ship, use, or build on top of.

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· by Renaud Deraison

The clipboard is the exploit — where ClickFix leaves every defender

A fake CAPTCHA writes a PowerShell one-liner to the clipboard. The user presses Win+R and pastes. No sandbox escape, no zero-day, no signed binary required — the human is the exploit. Here is what we ship against it today, where the gaps still are, and what Apple got right and wrong in macOS 26.4.

WebNews & Analysis
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· by Renaud Deraison

The nine-step attack that dies at step one

Microsoft documented a nine-stage ransomware chain that begins with an external Teams message impersonating the helpdesk and ends with Rclone quietly exfiltrating the network share. Eight of those nine steps need the host operating system. None of them can run against a tab.

WebNews & Analysis
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· by Renaud Deraison

When the store is the threat — 108 malicious Chrome extensions, one C2, 20,000 installs

A single operator pushed 108 malicious extensions onto the Chrome Web Store under five fake publishers, collected around 20,000 installs, and routed the lot to one command-and-control server. The review model didn't catch it. Here is why a security-first browser has to take a harder position.

WebNews & Analysis
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· by Renaud Deraison

How Bromure stops phishing before it reaches your parents

A step-by-step look at Bromure's anti-phishing — the local sweep, the model, the verdict, and why your parents, your grandparents, and the neighbor across the hall are exactly who we built it for.

WebExplainer
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· by Renaud Deraison

LinkedIn's BrowserGate, and why one browser identity is no longer enough

LinkedIn quietly probes for 6,000+ browser extensions, harvests 48 device attributes, and pulls your LAN IP via WebRTC on every visit. The fix is not a privacy setting — it is a different shape of browser.

WebNews & Analysis
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· by Renaud Deraison

Trust by design — the philosophy behind Bromure

The web is hostile, security advice is failing, and AI has changed the rules. Here's why we built a browser that takes the weight off your shoulders.

WebExplainer
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· by Renaud Deraison

Why browser zero-days are not going away, and what Bromure does about it

Apple and Google now spend tens of millions of dollars a year finding and fixing browser bugs. There are still eight to ten actively-exploited browser zero-days every year. This post lays out why that math does not change, how Claude Mythos and the "Vulnpocalypse" are about to make it worse, and why a browser built to assume it will be breached is a different kind of product.

WebExplainer
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· by Renaud Deraison

How Bromure blocks ads before the page ever sees them

Most ad blockers are browser extensions, and most browser extensions run inside the same process as the page they are trying to protect you from. Bromure does it differently. Here is how, and why it matters.

WebExplainer
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· by Renaud Deraison

How modern ransomware gets in — and how Bromure shuts the door

Most ransomware does not start with a zero-day. It starts with a browser tab. Here is how the attack chain actually works in 2026 — and what it looks like when it lands on a browser that was built to absorb the hit.

WebExplainer
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· by Renaud Deraison

Running a VPN inside Bromure — and a plain-language primer on Cloudflare WARP

What a VPN actually does, what it doesn't do, why running one per profile inside Bromure changes the anonymity story, and a tour of how Cloudflare WARP works under the hood.

WebExplainer
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