
Security Team Lead at @aztecnetwork. @CTFZone organizer. Love cryptography, fuzzing, breaking systems. Views are my own.
Joined March 2012
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zk.money is back.
A self-custodial wallet that lets you send and receive crypto privately.
Your money, private by default.
Reserve your unique tag to get started.
launch.zk.money
Rumata888 retweeted
Aztec Labs has acquired Obsidion, the team behind @ZKPassport.
The Obsidion team will continue to develop ZKPassport while also leading new consumer product developments.
The ZKPassport protocol will remain open source.
Rumata888 retweeted
Replying to @zeroknowledgefm @zksecurityXYZ @burnt_xion @TACEO_IO @o1_labs @reclaimprotocol @zkv_xyz @icme_app @aztecnetwork @0xMiden @ZcashFoundation @GiacomoFenzi @ronrothblum @SuccinctLabs @asanso @ethereumfndn @MariusMargulus @TachyonZcash @Zcash @EmanueleRagnoli @GetProvably @asn_d6 @diego_aligned @alignedlayer @rw0x0 @georgwiese @powdr_labs @mahdisedaghat @SoundnessLabs @KU_Leuven
To wrap up the talks on the Mainstage at zk14, @rumata888 from @aztecnetwork presented Origin Tags, a runtime mechanism to detect Fiat-Shamir implementation bugs, a severe vulnerability, especially in recursive settings. youtu.be/wSHD9ruvM-Q?si=I7QP…
Rumata888 retweeted
Introducing @AztecLabs_ - a standalone product studio built by the network’s original builders.
We’re not a third-party team learning the stack. We built it, and now we’re going to show the world what products are possible.
Rumata888 retweeted
Demystifying Fuzzer Behaviour by Addison
media.ccc.de/v/39c3-demystif…
Rumata888 retweeted
The secret weapon for lightning-fast authentication with Aztec is the ingeniously optimized ecdsa verification in barretenberg.
This isn't a theoretical optimization: we're talking <1s proving time & 30ms verification. Lets do a deep dive 🧵
(Source: ethproofs.org/csp-benchmarks)
Aztec can do exactly this.
All of it. I’m so happy.
I can’t stress how exactly Aztec can do this.
Fast client-side proving on desktop and mobile, well under 1GB RAM.
Native, private account abstraction is already built into Aztec.
Think of a way to authenticate a user…
Eth signature / Safe multisig / Sign in with google / email / password=Hunter2 / a live video of your cat / a signature from Vitalik telling you he’s proud of you?
You can build Aztec smart contracts that can do this today. You’ll be able to provide your users with familiar and private access to Ethereum.
Rumata888 retweeted
[POC2025] SPEAKER UPDATE
👤 Innokentii Sennovskii(@Rumata888) - "Zero Knowledge, Full Coverage: A Fuzzing Paradox"
#POC2025
Rumata888 retweeted
token 2022 passed six audits, used one of the simpler and more conservative zk systems - bulletproofs for confidential transactions.
And still had a fatal money printing zk bug. Moreover, a "not including all inputs in Fiat Shamir" bug, you'd think people would know to look for.
Zk is hard. We need to think of soundness verifiability more than prover speed.
In particular, it should be totally doable to come up with ways for the compiler to warn (or just not compile!) code with missing Fiat-Shamir inputs.
Rumata888 retweeted
Ditch the Pump & Dump Drama: Your ZK Tech Hub Awaits
zksecurity.xyz/blog/posts/zk…
We like the @kevaundray
Kev Wedderburn is the father, architect, and team lead behind @NoirLang, a universal ZK circuit writing language funded by Aztec Labs.
We’re excited to bring you a profile of the enigma behind the DSL transforming ZK programming:
aztec.network/blog/interview…
Rumata888 retweeted
In less than 48 hours tune in to the most interesting X Space of the year.
ZK. Security Challenges of Scalable Solutions
6 December, 2023. 12:00 ET, 18:00 CET
Featuring: @0xPolygon @aztecnetwork @Scroll_ZKP @RiscZero @zksync
Rockstars are there 👇🧵
nitter.gq/i/spaces/1lDxLPDnyOzxm
Rumata888 retweeted
As a result of Aztec Labs' investigation into an Aztec Connect vulnerability, we have paid $450,000 to independent security researcher lucash-dev.
This represents our largest ever bug bounty award.
↓
Rumata888 retweeted
Alice and Bob on a Date (at ZkSummit)
Alice: Aren't you tired of sharing secrets in the same secure channels?
Bob: Yeh, it's getting dull. Don't tell anyone, but sometimes I forget the secrets just to keep it fun 🤫
Alice: Stop it, you are crazy. Bob, what is your dream?
Bob: I wish we could write programs and not just share secrets.
Imagine writing programs that used our shared secrets... we could do ANYTHING.
Alice: I am not sure, who would run the program?
Bob: We would. And convince the world we ran it correctly with a succint proof. They are called ZKP's I think.
Alice: I'm getting déjà vu. That sounds just like a project someone shared in the secure channel last week.
It let's your write private smart contracts that do exactly that!
Bob: Wait really? 🤯
Alice: Yeh I saved a copy. We.... could try it? 😊
Bob: I dunno, it was just an idea. Maybe sharing secrets is what we are meant for.
Plus I only like programming in Rust.
Alice: Stop being a cryptographer, we never do anything fun anymore. It's just secret sharing again and again.
Plus, it's written in Noir so it's just like Rust. You will pick it up in no time.
Bob: Are you sure? I really like Rust.
Alice: Yes! Lets meet after ZkSummit.
I will share a secret if you come 🫢
(The secure channel is X and this is a marketing post for the Aztec Sandbox)
Is someone monitoring the @CryptoHack__ github? I submitted a PR to the ctf_archive some time ago, but there is no activity


























