Apollo butterfly, Haute Savoie, France.

Please help me caption this screenshot.

A thread in which @sockpuppet.org presents some of the juiciest morsels from our paper at zkae.io :

Thomas Ptacek@sockpuppet.org · 6mo ago

"presenting a cornucopia of practical attacks". These are my favorite words ever to have occurred in a cryptography paper.

A very nice blogpost explaining our work - slices right through the marketing from the vendors: medium.com/reading-sh/y...

Your password manager’s ‘zero knowledge’ promise is broken

What ETH Zurich’s USENIX Security paper means for anyone who stores passwords in the cloud.

medium.com

Kenny Paterson@kennyog.bsky.social · 6mo ago

Do you use a cloud-based password manager? So what's your threat model? Vendors like Bitwarden, Dashlane, LastPass and 1Password offer you "Zero Knowledge Encryption", with statements like: "Not even the team at Bitwarden can read your data (even if we wanted to)." We decided to test this… 1/n

Do you use a cloud-based password manager? So what's your threat model? Vendors like Bitwarden, Dashlane, LastPass and 1Password offer you "Zero Knowledge Encryption", with statements like: "Not even the team at Bitwarden can read your data (even if we wanted to)." We decided to test this… 1/n

Miracle of miracles: Deutsche Bahn runs almost on time!

Kenny Paterson@kennyog.bsky.social · 6mo ago

Almost in Karlsruhe for this talk. Looking forward to some great discussions with the KIT crypto and security community.

Almost in Karlsruhe for this talk. Looking forward to some great discussions with the KIT crypto and security community.

KIT Graduate School Cyber Security@kitcybersec.bsky.social · 6mo ago

We are back with another KASTEL Distinguished Lecture! This time Prof. Dr. Kenneth Paterson from ETH Zurich will talk about 'Cryptography in the Wild'. As always there will be time for Q&A afterwards and everybody is welcome. @kennyog.bsky.social @kitinformatik.bsky.social

"The heroes of my fields have slain one of the four horsemen of the apocalypse, while the heroes of your field gathered in the desert to create a new one" is such a clear, brutal rebuttal to Manhattan Project mythology, and now the most venal idiots alive are bringing back diseases because they can.

Degree-Off

xkcd.com

The sun still rises. And it will continue to do so. Long after the fascists are gone.

Submission week for the Cryptographic Application Workshop (CAW), an affiliated event at Eurocrypt'26 in Rome! Please submit your talk proposals on constructive real-world crypto using the following instructions before Jan 23, 2026 AoE. All infos on: caw.cryptanalysis.fun.

I insisted that Nadhim Zahawi delete this tweet before joining us, because one of our rules is that everyone in Reform UK has to pretend that I’m not racist.

Achievement unlocked: I finished the Private Eye Christmas cryptic crossword (#820). It’s a right corker, thanks to Cyclops for providing the much appreciated Yuletide mental gymnastics! @privateeyenews.bsky.social

Doubting Tomcat.

Some great talks to come at #RWC026 including 5 (!) from the Applied Cryptography research group @csateth.bsky.social on topics including Signal’s security, designing SecureDrop Next Generation, fuzzing of crypto libraries…. and one mystery topic still under embargo.

Real World Crypto Symposium@rwc.iacr.org · 8mo ago

The accepted talks for Real World Crypto 2026 are now online: rwc.iacr.org/2026/accepte... Thanks to everyone who submitted, and we look forward to the discussions at the symposium.

Winter sun on Zuriberg.

Catching up on recent posts on the CFRG mailing list.

Do I let this guy stay in the garage or gently remove him to a nice damp bit of garden?

Would it be too salty to say how reassuring it is to find so many new experts in quantum computing and post quantum cryptography suddenly popping up over on LinkedIn?

New reading material dropped.

The Call for Contributed Talks is now open for RWC 2026! And the deadline for submissions is now Oct. 10, 2025. rwc.iacr.org/2026/contrib...

RWC 2026 call for papers

Real World Crypto Symposium

rwc.iacr.org

Reading this gave me a lift - we are rapidly progressing to a carbon-free future, at least outside the US (who are being held back by extremist ideology and power of big oil lobbyists).

The New Yorker@newyorker.com · last yr.

Globally, roughly a third more power is being generated from the sun this spring than last. If this exponential rate of growth can continue, we will soon live in a very different world, @billmckibben.bsky.social writes.

Hello again from mighty Svalbard, 78 degrees North, 125 days of constant sunlight.

Some impressions of Longyearbyen from the last few days.

It’s nearly midnight in Svalbard, and I’m about to try to give an entertaining yet challenging talk at #ArcticCrypt -wish me luck!

bill this is the kind of mansplaining audacity that’s preserved in museums for future generations to learn from as a cautionary tale this is mansplaining in the form of a long-term nuclear waste warning message

On Svalbard for #ArcticCrypt2025 - looking forward to a week of daylight, cryptography research and exploration.

Slides of my talk titled "Lattices give us KEMs and FHE, but where are the efficient lattice PETs? -- By Example of (Verifiable) Oblivious PRFs" given at spiqe-workshop.github.io are here: github.com/malb/talks/b... Thanks @kennyog.bsky.social and @jurajsomorovsky.bsky.social for inviting me.