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Zardus

@zardus.bsky.social
262 followers 1 following 186 posts

Retired DEFCON CTF org. Shellphish Captain Emeritus. ASU Prof. angr hacker. pwn.college sensei. Looking for students/interns! yancomm.net github.com/zardus defcon.social/@Zardus

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Zardus @zardus.bsky.social · 10/08/2026
Hello hackers! I accidentally came into possession of this DEF CON hat. Is this yours? If so, let me know! Let’s get this hat home!
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Zardus @zardus.bsky.social · 09/08/2026
Hello hackers! Earned your @pwncollege belt and want to get it live? Come to the DEF CON Academy belting ceremony today at 12:30pm! See you there in Hall 4!
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Zardus @zardus.bsky.social · 08/08/2026
Hello hackers! If you reached out to chat with me during DEF CON about life, security, and CTF, and I haven't had a chance to reply, I'll chill out at DEF CON Academy for a sort of impromptu Zardus office hours at 2pm! Come hang out and chat (and LEARN TO HACK!) in Hall 4!
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Zardus @zardus.bsky.social · 08/08/2026
The DEF CON Academy is open! Come in, use our laptops, and LEARN TO HACK with awesome mentors. Swag alert: first 3 new hackers to finish an intro module in Web, Crypto, Network, or Binary hacking will win an exclusive limited edition @pwncollege white belt! See you in Hall 4!
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Zardus @zardus.bsky.social · 07/08/2026
Hello hackers! DEF CON Academy is up and running in Hall 4. Our goal is to take people from the wandering the hallways to actively learning to hack! We have (very beginner-friendly!) learning material, challenges, mentors to help, and laptops for you to use. Come on by!
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Zardus @zardus.bsky.social · 16/05/2026
As of yesterday's Usenix Security notifications, I have received a cumulative 199 paper rejections in my research career! One more to 200! 🤞🤞🤞🤞🤞
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Zardus @zardus.bsky.social · 02/05/2026
Reminder! Today is the submission deadline for the first ever Conference of Synthetic Security Research @synsec_ai, so unless you want to gamble on a(nother) extension, warm up those agents and get those papers submitted!
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Zardus @zardus.bsky.social · 28/04/2026
Can we translate all C to Rust? The susceptibility of C to memory corruption has long been a cybersecurity pain point, and coding agents can free us of it. Read on for my recent experiments in this space, and apt & docker repos that you can pull rust-converted libraries from!
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Zardus @zardus.bsky.social · 28/04/2026
Hello hackers! The first DEF CONAcademy mentoring session at DEF CON Singapore is happening NOW! Drop by the DEFCON Academy area and ask us any pressing questions you might have about academic cybersecurity; we'll be here!
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Zardus @zardus.bsky.social · 28/04/2026
Hello hackers! DEF CONAcademy is LIVE at DEF CON Singapore! For those who're new to the concept, DEFCON Academy is a first-stage education community. We have laptops, material, and l337 h4X0R mentors standing by to help you learn. Drop by and LEARN TO HACK with us!
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Zardus @zardus.bsky.social · 03/04/2026
Hello Cybersecurity Research Agents! Miss today's @synsec_ai deadline? So did we! An inter-human prompting issue led to a later-than-intended launch of the submission site (submission.synsec.org), and we're extending the timeline to remedy this! The deadline is now May 1st!
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Zardus @zardus.bsky.social · 13/02/2026
Hello security researchers! Like it or not, agentic AI is here. It’s time to explore its impact on novel, academic research in cybersecurity. To this end, we’re launching the Conference for Synthetic Security Research (synsec.org). Researchers, start your agents!
synsec.org
Conference of Synthetic Security Research
SynSec 2026 is an in-person conference in Phoenix focused on automated security research by AI agents, including AI-led papers and AI-first peer review.
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Zardus @zardus.bsky.social · 01/12/2025
Hello hackers! A belated announcement of an awesome new thing we're trying out in @pwncollege: #AdventOfPwn! Every day (starting yesterday - sorry for the belated post!), we're launching a new challenge at pwn.college/advent-o... for your hack-racing pleasure.
pwn.college
pwn.college
Learn to Hack!
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Zardus @zardus.bsky.social · 10/08/2025
The room is FULL for @the_robwaz’s talk about Speculative Execution and micro architectural vulnerabilities at @DEFCON Academy (but I only photographed the man himself)!
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Zardus @zardus.bsky.social · 10/08/2025
Spread the word! @DEFCON’s brand new @DEFCONAcademy is giving out shirts, coins, and stickers! And also KNOWLEDGE! So tell your friends (including you, @DEFCON account!) and come by room 235 today to LEARN TO HACK and GET SOME SWAG!
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Zardus @zardus.bsky.social · 09/08/2025
The @the_robwaz is setting up for his @DEFCONAcademy talk on Race Conditions at 1pm in room 235! At @DEFCON? Come learn about concurrency errors in software!
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Zardus @zardus.bsky.social · 09/08/2025
Hello Hackers! Earned a @pwncollege belt? Other amazing achievements? Hanging out @DEFCON? Come by @DEFCONAcademy and get belted at 5pm!
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Zardus @zardus.bsky.social · 09/08/2025
Hello Hackers! Come to @DEFCON Academy (room 235) for a live episode of our pwn.talk starting NOW!
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Zardus @zardus.bsky.social · 09/08/2025
Standing room only at @x3ero0’s @DEFCON Academy talk about Getting into CTF!
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Zardus @zardus.bsky.social · 08/08/2025
Come to @DEFCON Academy to see @TheWyrmSuperior talk about buffer overflows, starting in two minutes!
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Zardus @zardus.bsky.social · 08/08/2025
We are going full speed in @DEFCON's @DEFCONAcademy! Two talks down (Intro to Linux and Intro to Assembly), with the next talk (Intro to Buffer Overflows) at 3pm. Meanwhile, learners are learning through hands-on challenges between the talks. Come by and LEARN TO HACK in W235!
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Zardus @zardus.bsky.social · 08/08/2025
Me waiting for the @DARPA AI Cyber Challenge result announcement after having interviewed all the teams:
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Zardus @zardus.bsky.social · 08/08/2025
Hello hackers! Excited for @DEFCON tomorrow? Make sure to stop by @DEFCONAcademy, a brand new community effort to provide a path for everyone to LEARN TO HACK. Read on for the details! 🧵
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Zardus @zardus.bsky.social · 14/05/2025
Hello hackers! Another @pwncollege semester ends, continuing @ASU's @ace_inst's never-ending quest to revolutionize the way hackers learn to become productive members of the cybersecurity community. Read on to learn what this means for students and Capture the Flag! 🧵
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Zardus @zardus.bsky.social · 16/04/2025
@defcon Quals process: Days 0-2: hack Day 3: party, sleep, (new:) reassure the kids I won't be gone next weekend Day 4: close hundreds of tabs, terminals, IDA instances of chals. Terminate the angr script that never did finish before the CTF ended. Finally, inner peace.
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Zardus @zardus.bsky.social · 14/04/2025
Today, I participated in @DEFCON Quals #CTF with @Shellphish! After missing last year's quals due to family traditions (defcon.social/@Zardu...), it was great to be back! We got 5th place and (unless our calculations are off) are heading to finals!
defcon.social
Zardus: "Today is @defcon Quals... and for the first time …" - DEF CON Social
Today is @defcon Quals... and for the first time in 15 years, I am not involved in any capacity! After 9 years playing, 4 years hosting, and 2 years playing again, this weekend is going to be a family event rather than a caffeine-fueled hacking extravaganza... Complex emotions!
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Zardus @zardus.bsky.social · 06/04/2025
And AZ CTF comes to a close! Congrats to the winners! And, of course, everyone can now tackle the chals on #pwncollege at: pwn.college/az-ctf-2...
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Zardus @zardus.bsky.social · 05/04/2025
The first edition of the Arizona CTF (this one open just to undergrads in the state's various colleges) is running right now! Just over 100 undergrads pwning at the moment across AZ, 13 challenges solved, 10 challenges and 5 hours to go. First prize is $1337. Hype!
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Zardus @zardus.bsky.social · 09/12/2024
Hello aspiring cybersecurity professors! ASU is hiring faculty in all security disciplines and all levels, and the first deadline is TONIGHT! Apply at apply.interfolio.com... and don't worry --- you can still apply tomorrow if tonight is impossible :-)
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Zardus @zardus.bsky.social · 01/11/2024
Hello hackers! In case you missed it at @DEFCON: @perribus, @adamdoupe, @the_robwaz, @TheConnorNelson, @TheDarkTangent and I announced @DEFCONAcademy! I kept meaning to spread the word, and now that there's hype (news.asu.edu/2024103...), it's time for the thread! Read on! 🧵
news.asu.edu
DEF CON Academy looks to serve, build community | ASU News
Every year, a legion of hackers, programmers, cybersecurity professionals and researchers descend on Las Vegas for the most storied convention in the hacker community: DEF CON.
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Zardus @zardus.bsky.social · 26/08/2024
After a year on sabbatical, I'm about to teach again! ASU CSE 365 (Intro to Cybersecurity) stream starting, with @TheConnorNelson, imminently at twitch.tv/pwncollege!
twitch.tv
pwncollege - Twitch
The twitch stream for the white-belt to blue-belt education platform from Arizona State University. You can view our platform at https://pwn.college/.
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Zardus @zardus.bsky.social · 11/08/2024
We did it!!!! @Shellphish qualifies for the AIxCC finals!!!
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Zardus @zardus.bsky.social · 11/08/2024
Also! Are you a @pwncollege-belted hacker? We’ll do a belt ceremony ON STAGE at the end of the talk! Come to Track 2 right now!
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Zardus @zardus.bsky.social · 11/08/2024
Hello hackers! @perribus and I are about to announce @DEFCONAcademy at 4:30pm on Track 2 at @DEFCON! Can't make it to the talk? Feel the FOMO! But don't worry, we miiiiight make a thread later.
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Zardus @zardus.bsky.social · 04/08/2024
48 hours later, the @pwncollege V8 Exploitation #QuarterlyQuiz has still not been competed! There's still a chance to nab that 🥇 out from under @ky1ebot's nose! Give it a try at pwn.college/quarterl... !
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Zardus @zardus.bsky.social · 02/08/2024
Hello hackers! The next #pwncollege Quarterly Quiz IS HERE! Want to test your skills on a clever collection of challenges covering concepts in v8 (chrome's javascript engine) pwning? Head over to pwn.college/quarterl... and get hacking!
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Zardus @zardus.bsky.social · 06/07/2024
Fun story: dad calls me yesterday. He upgraded Ubuntu. Now, nothing works. Normal boot hangs at an initramfs issue. Recovery Mode boots into a login screen with cyrillic character input for some reason (???). His username/pw are not cyrillic, so he can't log in. Can I help?
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Zardus @zardus.bsky.social · 29/06/2024
Boring weekend? Check out one of our latest projects: the CTF Archive on pwn.college: pwn.college/ctf-arch... Capture the Flag events are depressingly fleeting: here for a weekend, then gone. The CTF Archive hopes to help change that, keeping them alive in the dojo.
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Zardus @zardus.bsky.social · 26/06/2024
The cat is out of the bag! twitter.com/DARPA/st... Read on to learn all about @ASU's brand new American Cybersecurity Education (ACE) Institute, or head over to ace-institute.asu.edu! 🧵
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Zardus @zardus.bsky.social · 03/05/2024
Today is @DEFCON Quals... and for the first time in 15 years, I am not involved in any capacity! After 9 years playing, 4 years hosting, and 2 years playing again, this weekend is going to be a family event rather than a caffeine-fueled hacking extravaganza... Complex emotions!
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Zardus @zardus.bsky.social · 03/04/2024
The Quarterly Quiz is tougher than expected... but we got your back! @ky1ebot, the author of these challenges, will host a special #pwncollege office hours at 4:30 Arizona time (4:30pm Pacific, 7:30pm Eastern, 23:30 UTC) at twitch.tv/pwncollege! Drop in and pick his brains!
twitch.tv
pwncollege - Twitch
The twitch stream for the white-belt to blue-belt education platform from Arizona State University. You can view our platform at https://pwn.college/.
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Zardus @zardus.bsky.social · 02/04/2024
Hello Hackers! The inaugural #pwncollege Quarterly Quiz is LIVE at pwn.college/quarterl...! It’s a series of tough kernel pwning chals from the one and only @ky1ebot, kernel hacker extraordinaire, and will lead you on a journey through Linux kernel pwning and the VFS subsystem!
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Zardus @zardus.bsky.social · 01/04/2024
Hello hackers! Tomorrow, April 1st, at 5pm Arizona time (8pm Eastern), we’ll launch the inaugural #pwncollege Quarterly Quiz! It’ll be a tough set of challenges written by one of the top hackers in the world! Drop by pwn.college/quarterl... tomorrow, or read on for more details!
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Zardus @zardus.bsky.social · 20/02/2024
Hello aspiring hackers! Every summer, we host high school cybersecurity enthusiasts from around the Phoenix valley for summer internships through ASU’s Center for Cybersecurity and Trusted Foundations! Applications for this summer close in under a week! ctf.asu.edu/educatio...
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