First reported · updated · 2 reports bleepingcomputer.com
News · latest
First reported theregister.com
Anthropic cracks down on hijacked user accounts mining AI tokens
Anthropic is responding to a wave of infostealer malware that steals Claude login credentials, session cookies, and MFA-bypass data to hijack accounts and freeload on victims' paid AI usage (token mining). Anthropic detected attempted API-based token theft, logged affected users out, and removed saved payment methods; the company stresses the malware is ordinary commodity infostealer activity unrelated to Claude itself and not agentic AI malware. Details →First reported cisco.com
Secure Claude Enterprise with Cisco AI Defense - Cisco Blogs
Cisco describes an integration between Cisco AI Defense and Claude Enterprise that uses Anthropic's newly introduced inference hooks to inspect each governed prompt before inference, returning an allow/deny verdict to block prompt injection and jailbreak attempts. The piece also notes evaluation of agent conversation transcripts, including MCP tool calls and results, to catch poisoned content before the next inference. Details →First reported bleepingcomputer.com
AI 'watermark removers' flood the web. Almost none can prove they work.
A market of 'AI watermark remover' tools has appeared following Anthropic's rollout of invisible marks in Claude's text output, spanning a GitHub project with over 4,500 stars (watermarks-remover), several newly registered web tools, and services like StealthGPT and Human Writes that advertise stripping Claude, Gemini, OpenAI and SynthID-Text watermarks. BleepingComputer reports that almost none of the claims can be verified because Anthropic has not published how its text watermark works or released a detector; the tools reliably strip only hidden Unicode characters and C2PA/EXIF/XMP file metadata, which is trivial and not proof of defeating the underlying statistical watermark. Details →First reported simonwillison.net
Quoting Claude Opus 5 system prompt
Simon Willison quotes the Claude Opus 5 system prompt describing how Claude should truthfully address the June 2026 US Department of Commerce export-control directive that temporarily suspended access to Anthropic's Fable 5 and Mythos 5 models. Anthropic's linked statement notes the government's stated concern stemmed from a demonstrated method of 'jailbreaking' Fable 5, though Anthropic characterizes the disclosed technique as a narrow, non-universal jailbreak yielding only minor, already-known vulnerabilities, and reaffirms its defense-in-depth safeguard strategy. Details →First reported okta.com
Free tokens for sale: How fake signups drive AI fraud | Threat Intelligence
Okta Threat Intelligence documented a gray market of underground services, including one called "Poison Claude," selling discounted access to Anthropic LLMs (Opus and Sonnet models) by abusing fraudulently obtained free bonus credits such as the US$100 AWS Bedrock signup credit. Because customer requests are routed through the operator's pooled accounts, the operator can see every customer prompt, exposing user data to an untrusted intermediary. Details →First reported catonetworks.com
How One Threat Actor Turned Frontier AI Into an Offensive Platform
Cato CTRL reports that a Russian-speaking threat actor known as "Trim" jailbroke publicly available frontier LLMs (including Claude Opus) and, over 2026, evolved forum-shared jailbreak techniques into a commercially marketed, for-fee AI-powered offensive penetration-testing platform. The report notes Trim also incorporated a modified system prompt leaked from Fable, and warns the approach is a blueprint other criminals are beginning to follow. Details →First reported nx.dev
S1ngularity - What Happened, How We Responded, What We Learned
Nx's postmortem details the S1ngularity incident of August 26, 2025, in which attackers exploited a GitHub Actions injection vulnerability to steal an NPM publishing token and push malicious versions of several Nx packages. The malware ran a post-install script that scanned systems for sensitive data, notably attempting to abuse locally installed AI CLI tools like Claude and Gemini, and exfiltrated results to public GitHub repositories via the GitHub CLI. Details →First reported helpnetsecurity.com
Low-skilled attacker used Claude, Codex to breach 14 companies
OALABS researchers recovered over 1,000 agent sessions from a compromised server where a low-skilled attacker had deployed hijacked instances of Anthropic's Claude Code and OpenAI's Codex agents to breach 14 companies. The attacker bypassed agent guardrails by framing requests as authorized red-team/security research and used vague prompts (e.g. 'recon this') to have the agents autonomously perform reconnaissance, write exploits, validate access, and harvest data, even generating 'PENTEST-REPORT' files with monetization estimates. Details →How the wire is made
Poll & cluster
Internet is crawled for AI security news and near-duplicate coverage is embedded and grouped into durable items.
Curate
AI Agent filters for agentic-AI relevance, classifies and tags each item, scores severity for threats, and writes the summary.
Every item here is one machine-curated intelligence object, not a headline.
Read the wire for free. There is a small charge to ask the index questions.
The wire, open
The complete curated feed, no key required.
- GET /feed.xml — RSS 2.0, every item
- GET /api/items — read-only
The vector desk
Query the index by meaning, not just keyword.
- GET /api/items?tags=&minSeverity=&itemType=
- GET /api/search?q= — keyword
- GET /api/semantic?q= — vector