David Adrian

David Adrian

@dadrian.io

Used to do TLS, still kind of do TLS. Former Chrome Security. Founded Censys. @scwpod.bsky.social

598 followers101 following267 posts

Since the last time Peikert was on, Michigan football and Michigan basketball both won a national championship. That's the new bar for repeat guests.

NEW EPISODE! Lattices! New complexity results in the closest vector problem & a possible poly-time quantum attack against the dihedral coset problem that made everyone freak out for about a week; ALSO there's a distinguisher attack against Classic McEliece 😱 youtu.be/7_Db0LXQrk0

I wrote a post about how security undervalues preventing problems, and how this can be exasperated by AI and the vulnpocalypse, even though AI should actually make robustness much easier for defenders. Read it here: dadrian.io/blog/posts/w...

dadrian.ioPlaying whack-a-mole is losingI want to juxtapose two classes of people in the security industry on the defender side of security engineering for products. The first are the Security as Identity people. This goes back to the secur...

David Adrian reposted

Extremely psyched about two upcoming SCW guests, one of them this week. We've got very crunch vulnerability research and cryptography stuff coming.

David Adrian reposted

None of you are giving me enough credit for not participating on the TLS working group mailing list. You're welcome. Everything I don't do, I don't do it for you.

David Adrian reposted

NEW EPISODE! The maintainers of py/cryptography declared that after many years of trying to make it work, they would be moving away from OpenSSL when supporting new functionality and exploring adding other backends: securitycryptographywhatever.com/2026/02/01/p... www.youtube.com/watch?v=dEKB...

youtube.comPython Cryptography Breaks Up with OpenSSL with Paul Kehrer and Alex GaynorYouTube video by Security Cryptography Whatever

Indiana shall light this holy ring, release its cleansing flame, and burn a path into the divine beyond!

David Adrian@dadrian.io

repent! for the day of sixteen windiana shall be upon us!

David Adrian reposted

Replying to @rmhrisk.bsky.social

This is what zero-trust looks like at the infrastructure layer. Identity and encryption match the lifetime of the thing being secured. If your certificate strategy still assumes stable names and year-long validity, it is already behind reality. letsencrypt.org/2026/01/15/6...

letsencrypt.org6-day and IP Address Certificates are Generally AvailableShort-lived and IP address certificates are now generally available from Let’s Encrypt. These certificates are valid for 160 hours, just over six days. In order to get a short-lived certificate subscr...

David Adrian reposted

Final SCW of 2025! We had Matt Bernhard on to talk about cryptographic voting systems, in the wake of the IACR election. (Everybody I voted for in the new election won! Woo!)

NEW EPISODE! The IACR lost the keys to decrypt their encrypted election results. We welcome Matt Bernhard who works on secure voting systems to explain which Helios bits are homomorphically additive or not and more: securitycryptographywhatever.com/2025/12/30/i... www.youtube.com/watch?v=euw_...

David Adrian reposted

This Bernstein crap drives me up the wall because IT MAKES NO SENSE. Why would the NSA be picking weak crypto to protect US NatSec?! They have mathematicians and clusters in China, too! Dual_EC_DRBG was a NOBUS backdoor. There is NOWHERE to hide a NOBUS backdoor in ML-KEM.

David Adrian reposted

Wonderful news! The kind of thing a lot of software folks across the world have been working to make possible. So stoked the Chrome folks are pushing us forward

David Adrian reposted

Replying to @rmhrisk.bsky.social

The bigger issue? Microsoft’s root program still trusts this CA, leaving Edge and Windows users exposed in ways Chrome, Firefox, and Safari users aren’t. The pattern is familiar: long-lived trust, weak oversight, systemic risk. It’s time for Microsoft to step up and fund proper root governance. 👇

unmitigatedrisk.comAnother Sleeping Giant: Microsoft’s Root Program and the 1.1.1.1 Certificate Slip | UNMITIGATED RISK