CIRCLE WITH A DOT

The attribution for Mastodon's CVE-2026-46349 (CVSS 5.3, retracted boost reissuance) is interestingly reported as:"This security issue has been reported by Doyensec in collaboration with Claude and Anthropic Research"Is this how they say "Mythos" without revealing that Doyensec is one of the undisclosed Project Glasswing members?https://github.com/mastodon/mastodon/security/advisories/GHSA-chgx-jx3p-rf73https://w.on-t.work/activitypub/may-2026-vulnerability says:"Doyensec has contacted us on *behalf* of Anthropic".#security #mastoadmin #mythos #ai #glasswing

Looks like Anthropic ready to release Mythos in near future.https://www.testingcatalog.com/anthropic-prepares-mythos-1-for-claude-code-and-claude-security/#cybersecurity #infosec #mythos #anthropic #ai

I don't know what to make of this, except that Anthropic is very good at PR."It is not nefarious, nor even surprising, that Anthropic is speaking differently to policymakers than developers.""Still, experiencing these two different narratives so close together gave me a profound sense of whiplash."Time, from yesterday: A Tale of Two Anthropics https://time.com/article/2026/05/22/anthropic-claude-code-jack-clark-ai-safety/ @time #Anthropic #Mythos #infosec

@nlnetlabs Whew, that's a long list of CVEs. Reminds me of the dread of seeing a WebKit security patch drop right before I'm about to ship an update. Time to check my own dependencies.

Looks to be an interesting & important @ZeroNetworks webinar June 11: Mythos & Daybreak: What Boards Are Asking & What to Actually Do About It. #Claude #Mythos & #OpenAI #Daybreak have changed the math on vulnerability, discovery & exploitation overnight. https://api.cyfluencer.com/s/live-session-mythos-and-daybreak-what-boards-are-asking-and-what-to-actually-do-about-it-27407

Cyber Lack of Security and AI Governance최근 AI 발전과 함께 사이버 보안과 AI 거버넌스 문제가 부각되고 있다. 특히 Anthropic의 Claude Mythos 모델은 사이버 보안 분야에서 획기적인 성능을 보이며, 복잡한 취약점 탐지와 자율적 공격 시뮬레이션에서 큰 진전을 이루었다. UK AI Security Institute와 XBOW의 평가 결과 Mythos는 기존 GPT-5.5 대비 현저히 향상된 능력을 보여주며, AI 모델의 빠른 발전에 따른 규제와 보안 대응 체계 마련이 시급함을 시사한다. 다만, 관련 정부 기관의 예산 부족과 권한 분쟁이 AI 안전 관리에 걸림돌로 작용하고 있다.https://thezvi.substack.com/p/cyber-lack-of-security-and-ai-governance#aigovernance #cybersecurity #llmsecurity #anthropic #mythos

The #Mythos 'scare' is showing something that we already knew: security debt is everywhere. We already knew this, but kept it under the rug because code analysers were hard to use, difficult to interpret and required lots of effort with a very uncertain outcome.LLMs are making code analysers much more accessible, and are finding new ways of doing code analysis.The end result is that security debt is real, and that debt is due. Now.

@Xavier how convenient(But thanks for the explanation)

Vulnerabilities found from #curl:#Mythos: 1Me: 30- https://daniel.haxx.se/blog/2026/05/11/mythos-finds-a-curl-vulnerability/- https://sintonen.fi/advisories/

@das_robin @bagder Yes, #Firefox is probably a few orders of magnitude more complex than #curl and definitely much bigger.Still, the blog post explicitly mentions "In addition to fixing the 271 bugs identified by Claude Mythos Preview in the 150 release, we’ve shipped more of these fixes in 149.0.2, 150.0.1, and 150.0.2.", so >270 attributed to #Mythos *alone*.

I think something better is out before you know it - there is no scarcity of intelligence especially going forward - china is going to steamroll all the american frontier models, it would be good if this happens more since they are overvalued, what is the depreciation rate of an ai model?

RE: https://infosec.exchange/@tinker/116494136372314588...any wonder I'm completely disenchanted with technology? Absolutely uninterested in GenAI. Can't stand what's happened to search. Feeling unmoored. #AI #LLM #Claude #Mythos #infosec #Autism #ADHD

@hzulla @hzulla - Yeah, I think you're right. I followed up the post with this one: https://infosec.exchange/@tinker/116496096417501652I have observed different groups that line up with this pattern and its *often* (but not perfectly) along neurodivergence.... But!You're right. One guy I know who is nuerodivergent and he is massively into vibe coding.... such as it is. So I don't know the right words to describe it yet or the exact phenomena or reason for it. I just see a distinct pattern and have found others that observe it too.The discussion following this post has been good to further flesh it out. I appreciate your response and input!

The Register: Opinion: Anthropic's magic code-sniffer: More Swiss cheese than cheddar, for now https://www.theregister.com/2026/04/27/anthropics_magic_codesniffer_more_swiss/ @theregister #Anthropic #Mythos