Friday Squid Blogging: Bigfin Squid
2026-05-16T19:23:41Z•3168d5e7c940b008a6ba39e1357d5ca8d031af7fc3bb1b55e15f19e547727002
AF_ALGAI-securityAnthropic-MythosCVE-2026-31431GPT-5.5PoCage-verification-bypassbiometric-spoofingcopy.failfacial-recognitionfake-mustacheinsider-tradingkernel-exploitlaw-enforcementlinux-kernelllm-steganographylocal-privilege-escalationpolymarketprivacysmart-glassessplicesurveillancetext-steganographyvulnerability-disclosurevulnerability-finding
What happened
Collection of Bruce Schneier blog posts summarizing multiple security topics: a severe Linux kernel local-privilege-escalation dubbed “copy.fail” (CVE-2026-31431) with a public PoC that abuses AF_ALG sockets plus splice() to write into another file’s page cache and evades checksum-based detection; AI model developments where Anthropic’s Claude Mythos (not widely released) and OpenAI’s GPT-5.5 have strong capability to find software vulnerabilities; on-camera age-verification systems being spoofed (report of kids using a fake mustache); LLMs demonstrating effective text-in-text steganography; a
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- schneier_blog
- Record identifier
- 3168d5e7c940b008a6ba39e1357d5ca8d031af7fc3bb1b55e15f19e547727002
- Enrichment time
- 2026-05-16T19:23:41Z
- AI-assisted enrichment
- Yes
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