Our new multi-model agentic security system brings together more than 100 specialized agents across frontier and custom models to find exploitable bugs, delivering top performance on the CyberGym benchmark.

We used it ahead of Patch Tuesday to help find and fix 16 vulnerabilities. Today we’re announcing that customers can sign up to test it in private preview.

https://www.microsoft.com/en-us/security/blog/2026/05/12/defense-at-ai-speed-microsofts-new-multi-model-agentic-security-system-tops-leading-industry-benchmark/?v=1

Will you please stop wasting time on Mythos-associated FUD and try to understand that you need to build reliable and dependable software, not stuff which changes weekly, to get security?

Mythos & LLM only bring breadth and depth to automated searching, they find nothing conceptually new, if no-one had come up with buffer overflows there would be no buffer overflows coming out of Mythos.

There will be a flood of issues, as if suddenly thousands of people were dedicated to finding bugs, then it will stop.

It is an excellent chance to ask yourselves "why?" and realise that no, we don't need software like it is being built now, you need software like it was built back when downtime mattered.

"Packages that can't be rebuilt byte-for-byte are now blocked from entering Debian's testing branch."

https://itsfoss.com/news/debian-makes-reproducible-builds-mandatory/

Poll: What is the main driver of high quality vulnerability research?

(Multiple choice. Please boost for reach :))

[RSS] Go fuzzing was missing half the toolkit. We forked the toolchain to fix it.

https://blog.trailofbits.com/2026/05/12/go-fuzzing-was-missing-half-the-toolkit.-we-forked-the-toolchain-to-fix-it./

[RSS] Exploiting the Tesla Wall Connector from its charge port connector - Part 2: bypassing the anti-downgrade

https://www.synacktiv.com/en/publications/exploiting-the-tesla-wall-connector-from-its-charge-port-connector-part-2-bypassing.html

@wdormann @christopherkunz @jhr77 Vuln mgmt is hard, e.g. how you track patch coverage vs. signature update status? Not that pushing a sig was a bad idea, I'd just expect a KB for this too.

Babe wake up, new Windows privesc just dropped. #GreenPlasma. Oh and also Bitlocker bypass #YellowKey https://github.com/Nightmare-Eclipse/GreenPlasma

@wdormann @jhr77 @christopherkunz I don't see a Defender entry in today's update that also points to this being a signature based mitigation

Pwn2Own Berlin 2026 is rejecting working RCEs because organizers ran out of contest slots.

Visit a website in Firefox and get code execution? Rejected.

Strange days indeed.

He says to blame the delay on jet lag, but @dustin_childs has his full review of the #Adobe and #Microsoft patches. Nothing under active attack, but a total of 190 CVEs to look at (plus 120+ from Chrome recently!) read the details at https://www.zerodayinitiative.com/blog/2026/5/12/the-may-2026-security-update-review

Had some fun finding and exploiting state machine logic bug in af_alg_sendmsg last year, it leads to OOB access, arbitrary write then container escape that unnoticed since 2011

kernelCTF writeup: https://github.com/star-sg/security-research/blob/fa38e161bf59e285e3fbc5238a83f71bfa7dc7c7/pocs/linux/kernelctf/CVE-2025-39964_lts_cos_mitigation/docs/exploit.md
Fix commit: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
https://bird.makeup/users/starlabs_sg/statuses/2054048693716939215

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7052.html Xen advisory posted, should be a kernel fix here any minute now I assume

2026 Hackaday Europe: Pre-party, More Workshops, and Everything Else

https://hackaday.com/2026/05/12/2026-hackaday-europe-pre-party-more-workshops-and-everything-else/

@ekuber Having a chopper to call when you go hiking is definitely nice :D I don't quite get how the principles apply here though: in your opinion, for this particular example, would it be right to require all traits by ::new()?

@ekuber Don't get me wrong, I'm positively amazed by rustc messages in general, and this one is no exception. On the other hand I also like to see how I should approach the API I'm about to use, having a map about the code base before I go down a path that just won't work. I feel like relying on the compiler is like periodically calling a hovering helicopter to get out of the woods, instead of having a proper $5 map.

Dead.Letter (CVE-2026-45185) How XBOW found an unauthenticated RCE on Exim

https://xbow.com/blog/dead-letter-cve-2026-45185-xbow-found-rce-exim

We are releasing Firefox 150.0.3 today, in order to fix an important security issue. Please take the time to update.

https://www.mozilla.org/en-US/security/advisories/mfsa2026-45/

@jhr77 @christopherkunz
I suspect that Microsoft pushed out Defender updates that mitigate the exploit.

With current definitions, I've not seen RedSun succeed. No matter how long I wait.

With old definitions, success is pretty quick.

TinyJoyPad 作った #shapolab