Friday Squid Blogging: Bigfin Squid
2026-05-18T07:23:42Z•6b38917785be7a68612d896892b9c7843181409522a3b746533694fb526b8587
AF_ALGAI-securityAnthropic-MythosCVE-2026-31431LLM-dual-useOpenAI-GPT-5.5Polymarketage-verification-bypassbiometric-spoofingcopy.failface-recognitioninsider-tradinglinux-kernellocal-privilege-escalationpage-cacheproof-of-conceptsmart-glassessplicesurveillancetext-steganographyvulnerability-disclosure
What happened
Collection of Bruce Schneier blog posts (May 2026) highlighting several high-impact security topics: a widespread Linux kernel local privilege escalation (copy.fail) disclosed 29 Apr 2026 with a working PoC (CVE-2026-31431) that abuses AF_ALG + splice to write into a file's page cache (evades on-disk integrity checks) and works across major distributions; growing AI dual-use risks as Anthropic's Claude Mythos (restricted) and OpenAI's GPT-5.5 are highly capable at finding software vulnerabilities; LLMs are effective at text-in-text steganography; on-camera age-verification systems can be spoof
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- schneier_blog
- Record identifier
- 6b38917785be7a68612d896892b9c7843181409522a3b746533694fb526b8587
- Enrichment time
- 2026-05-18T07:23:42Z
- AI-assisted enrichment
- Yes
This record may overlap with other records. Its enrichment can be incomplete or wrong, and machine assistance was used. Validate consequential decisions against the linked source and your own environment.