Ξ Smart contract security researcher @zenith256, @spearbit, @bailsecurity, @SecurityOak & @zerocool_ai | AI Red Teaming 🔄

Solidity, Rust & Cairo
Joined January 2022
Built by @J4X_Security Tokenized stocks. One app. @Stature_finance Don't be late → stature.finance/share/BNC7tc…
2
1
1
19
1,182
Mario Poneder retweeted
The Tetris Effect: when you've done something so long, it starts leaking into your dreams. For @marioponeder, that means dreaming about the codebases he’s auditing. This is the story of how a former engineering physicist (and powerlifter) became a Zenith auditor.
8
2
1
30
3,037
Really enjoyed reviewing their codebase. Fantastic team to work with and wishing them all the best with USDv. 🚀
Zenith has completed its security review of Solomon’s USDv programs with 0 critical findings. Three independent security audits are now complete. USDv was built for capital at scale. Its security posture reflects the responsibility that comes with it. The foundation is in place.
3
213
Mario Poneder retweeted
I have been cooking hard for the last weeks Tokenized stocks are the big new thing, but they are pretty much unusable for 99% of the population. Stature is gonna change that Please leave a follow and sign up for the waitlist; I'm happy about every single one of you who can test it out in Beta soon.
Buying tokenized stocks shouldn’t require a DeFi survival guide. Meet Stature. Join the waitlist → stature.finance
8
5
40
2,752
Mario Poneder retweeted
After years in security, I decided to build something myself. Livestreams have always felt way too passive to me. Viewers should be able to actually influence what happens next. That's why I'm building Rile, a platform where any terrible idea can come to life if enough people want to see it happen ↓
Watching is fun. Being part of what happens is better. Rile lets viewers put money behind challenges they want to see, making streams more interactive for chat while opening up a new revenue stream for creators. Everybody wins. Join the waitlist at rileapp.com
8
4
2
73
4,351
Proud to be part of the Zenith lineup!
The Tetris Effect: when you've done something so long, it starts leaking into your dreams. For @marioponeder, that means dreaming about the codebases he’s auditing. This is the story of how a former engineering physicist (and powerlifter) became a Zenith auditor.
3
1
28
1,545
Nearly seven weeks of security audit work with Meteora so far, and it’s been a pleasure throughout. 🫡
Meteora has done $333B+ in swap volume on Solana. That kind of volume drives constant pressure to improve and meet demand. But even with that pressure, @meteoraAG has never compromised on security. Here’s how Meteora and Zenith have worked together to secure Solana.
3
1
8
902
It was a pleasure taking risks alongside you legends and then making it count by betting it on black afterwards! Thanks to @Wonderland and all the sponsors.
Had a fun time playing this year's @Wonderland CTF with the chads, thx to all the challenge creators and the great team that organized the event 🙏 @0xriptide @heavyw8t_ @MarioPoneder @zigtur
3
37
1,757
Totally agree — prompt injection feels like a natural extension of the smart contract security mindset. Personally, I’m too occupied with Web3 work to properly participate in AI red teaming competitions right now 😅 But definitely not wanting to gatekeep the opportunity: app.grayswan.ai/arena @GraySwanAI In case someone wants to test their prompt injection skills in a priced competition setting.
if you squint this says to me smart contract security researchers are perfectly primed as adversarial thinkers for prompt injection security research
6
1,058
Diving into AI red teaming: prompts are like comments — non-binding. Same lesson across stacks: security boundaries must be enforced, not “requested.” For agents, the real boundary is between the decision (LLM) layer and the execution layer.
2
1
2
614
It was a pleasure reviewing your protocol together with @strukt93! 🔍
Audit complete. ✅ Your dollar rails have now been through two independent audits. One step closer to full access.
5
642
After all these years, this new theory has me dusting off my physics degree again. If the math holds, it holds. Math doesn’t lie.
Here's the correct Theory-of-Everything (tm) There's no going back now. The era of nerds starts today. Link in response
2
1
2,471
An amazing project to work on once again—my pleasure. 🫡
We are currently in the process of conducting an audit for @0xProject . BailSec is tasked with an audit of the CrossChainReceiver. Be sure to keep yourself informed by following @bailsecurity for important updates.
8
559
End of 2024: grateful, euphoric, and wondering how my career could possibly get better. 2025’s answer: Zenith.
As 2025 comes to a close, here's a look back at what our team accomplished this year at Zenith. 1.) Nearly half of our 243 audits found High's and Crit's. In total, we found 292 High and 96 Critical-severity vulnerabilities. 2.) Starting audits under 24 hours' notice. Clients raved about this. Thank you to every Zenith auditor who made this possible. Your dedication, expertise, and clear communication were the key. 3.) We worked with leading protocols including Bridge, Zama, and Jupiter. We spanned 21 ecosystems, including Ethereum, Monad, Base, Solana, Move, and Starknet. 2025 was Zenith’s inaugural year, and we’re excited for what’s ahead in 2026. A huge thanks goes to our clients, partners, and team for making this possible. Interested in a Zenith audit in 2026? Link in bio!
7
770
Mario Poneder retweeted
Finalised a huge audit last week. Spent almost 4 weeks securing @StarkWareLtd's Cairo itself, together with the G @MarioPoneder, for the @zenith256 team. Working on a language and its libraries itself offers so many new surfaces which made this one interesting af. Really grateful I could do my part to keep @Starknet safe!
3
1
49
2,741
Ready for the next era!
We’ve had a glowup! Since 2017, we have conducted over 600 audits. Today, we offer everything from protocol design to operational security, training, economic advisory, and pentesting. New look, new services. The same uncompromising quality! Book. Secure. Relax.
2
10
1,335
Mario Poneder retweeted
SR-Boat Cannes edition A full day of touching water and finally getting some sun with @amyyy_g_ @heavyw8t_ @MartinMarchev @mattaereal @n4nika_ @bitbugshar @MarioPoneder @eugenioclrc @bernd_eth @p_misirov @BazziBazzani @HickupH @kamensec @rotcivegaf @gorgut_ @0xWeisss
5
9
3
108
10,328
Happy to share this client feedback! Dissecting a neat and sophisticated codebase – like theirs – is especially emotionally rewarding. @Possum_Labs @TopCutFinance
1
1
19
1,420
Congrats! I am happy to experience the launch first-hand being tied up in a 6-week review @zenith256 !
Introducing Zenith: an auditing firm that delivers good, affordable audits ASAP. Teams want to ship this week, not next month. And without critical bugs. We pick a team of top auditors and manage the audit. It's hassle-free. No more waiting: we can start at a moment's notice.
2
20
1,907
Mario Poneder retweeted
Replying to @n4nika_
@n4nika_ and I have been cooking up some (partially beginner-friendly) Web3 challenges for this year's Glacier-CTF. If you wanna try to crack our 100% secure code, check out glacierctf.com/ in the evening. Chals will be open for 24h.
2
2
2
32
4,225