Hardware hacker, computer engineer, former L0pht member and juvenile delinquent, sometimes known as Kingpin.
Portland, OR
Joined June 2008
- Tweets3K
- Following600
- Followers29.7K
- Likes920
Pinned Tweet
Reverse Engineering a Ledger Nano X Hardware Implant (@_TROPICON) slides are up! grandideastudio.com/portfoli…
ALT A real-world hardware implant discovered inside of a Ledger Nano X cryptocurrency wallet
Joe Grand retweeted
When I wrote this👇 2 wks ago Trezor criticized it because the wallets in story were sold by unauthorized sellers not authorized ones. Yesterday Trezor announced that a Trezor Safe 5 wallet sold by CryptoBilis - an authorized seller - was also compromised trezor.io/blog/news/implant-…
Despite claims by Trezor today that none of its crypto devices have been compromised - unlike the devices of Ledger, its competitor - hardware hacker @joegrand says he found implants in two Trezor devices and reported this to Trezor in August. My story: zetter-zeroday.com/trezor-wa…
It's time to put my Adventures of Wallet Hacking series to bed, but not before one final chapter! Free livestream for all courtesy of @unicampoficial LICS Cybersecurity League. Announcement here: linkedin.com/feed/update/urn…
Joe Grand retweeted
AVTOKYO2026まであと1ヶ月！ 1 month to go!
スピーカーとタイムテーブル公開しました。
Speakers & timetable are up!
avtokyo.org/avtokyo2026/spea…
avtokyo.org/avtokyo2026/time…
11/21(土) 渋谷TK NIGHTCLUBで会いましょう🍻
See you in Shibuya!
#AVTOKYO
Joe Grand retweeted
I made a page listing all the Ledger implants I've seen and confirmed from public reports and images posted to X for reference. There's a "Report new case" link if you see anything missing.
karpeleslab.github.io/ledger…
Joe Grand retweeted
Despite claims by Trezor today that none of its crypto devices have been compromised - unlike the devices of Ledger, its competitor - hardware hacker @joegrand says he found implants in two Trezor devices and reported this to Trezor in August. My story: zetter-zeroday.com/trezor-wa…
Joe Grand retweeted
Ledger was warned last March about implants by hardware hacker @joegrand but apparently did little because no one had yet used implants to steal crypto. That changed last wk with the heist of hundreds of accounts. There is evidence stolen seeds were sent to servers in Hong Kong
Someone embedded hardware implants in Ledger crypto wallets to steal the randomly-generated seed phrases that protect crypto accounts. They used the stolen seeds last week to hijack $100 million in crypto from 300+ crypto accounts. I dug into the mystery zetter-zeroday.com/who-is-pl…
Joe Grand retweeted
Someone embedded hardware implants in Ledger crypto wallets to steal the randomly-generated seed phrases that protect crypto accounts. They used the stolen seeds last week to hijack $100 million in crypto from 300+ crypto accounts. I dug into the mystery zetter-zeroday.com/who-is-pl…
Joe Grand retweeted
I've put together a research page on the Ledger implants I've found in order to organize my findings and future research. The next steps will be to analyze each SIM card as well as each MCU (firmware extraction, etc).
tibane.net/research/ledger-n…
Joe Grand retweeted
Spy implant in @Ledger Nano X, back in the days and now, that's quite an evolution.
Old implant picture from grandideastudio.com/portfoli…
I'M SO EXCITED FOR THIS!
👺 Triforce Keynote confirmed for TenguCon 3.0.
Joe Grand (Kingpin), YTCracker, and Iceman will join us for a special 60 minute keynote session.
Three unique perspectives. One stage.
More details soon.
#TenguCon #hackerculture #joegrand #YTCracker #Iceman
Joe Grand retweeted
👺 TenguCon 3.0 特別基調講演「Triforce Keynote」開催決定。
Joe Grand（Kingpin）、YTCracker、Iceman の3名が登壇する、60分間の特別セッションです。
ハッキング、テクノロジー、創造性。それぞれ異なる視点がTenguCon 3.0のステージに集結。
#TenguCon #JoeGrand #YTCracker #Iceman
For over three years, @LennertWo and I have worked on improving fault injection attacks against STM32F2 and STM32F4 devices to make them more repeatable and reliable. It's been a roller coaster of late nights, bricked chips, and questioning our life choices, resulting in over 100 million total glitches, a new attack strategy, and flash memory recovery from dozens of locked targets with a 100% success rate. I'm super proud of what we've done and happy to officially share it with the world!
grandideastudio.com/portfoli…
github.com/joegrand/stm32-fa…
youtube.com/watch?v=4LahQG09…
ALT Screenshot from Joe and Lennert's REcon 2026 presentation showing an STM32F2 side channel power analysis plot
ALT Joe and Lennert after their REcon 2026 presentation courtesy of Iceman, Joe is holding their voltage fault injection platform
ALT Joe's electromagnetic fault injection platform with oscilloscope in the background showing their payload dumping protected flash memory
ALT Joe's workbench during STM32 target preparation
Anyone have a connection to the kid collecting badges? I might have a few things to send them...
the defcon 33 documentary just dropped! youtu.be/pb0kJXSy64E?is=cqwK…
Joe Grand retweeted
Just released MCPGULATOR, an MCP server for JTAGulator.
Lets MCP-compatible AI agents directly interact with hardware for UART identification, JTAG pin discovery, SWD ID, GPIO operations, baud rate enumeration, and automated probing workflows.
github.com/AsherDLL/mcpgulat…
Joe Grand retweeted
Join @joegrand at Hardwear.io Netherlands 2026 for hands-on hardware hacking training covering embedded device investigation, reverse engineering fundamentals, plus an exclusive bonus day.
🎟️ Register now: hardwear.io/trainings/nl-202…
#HardwearNL2026 #HardwearTrainings
Joe Grand retweeted
¡Ya está aquí! 🚀 Toda la magia de TROPICON 2026 en una sola playlist 🎯
No importa si te perdiste alguna charla o quieres revivirlas, aquí están todas las mejores sesiones en ciberseguridad 🛡️ Dale play ahora en YouTube 👇
youtube.com/playlist?list=PL…
Video from my Reverse Engineering a Ledger Nano X Hardware Implant talk (@hardwear_io) is up along with firmware extracted from the implant! grandideastudio.com/portfoli…
ALT A real-world hardware implant discovered inside of a Ledger Nano X cryptocurrency wallet
Joe Grand retweeted
Kingpin is opening #BSidesBrisbane. @joegrand on 'Hacks Under Pressure':
Inspired by Rush's 'Grace Under Pressure', Joe shares the hacks that brought him the most pressure, from million-dollar crypto wallets to street-testing prototypes, and the surprising results that followed.