Sniff the airwaves! Learn BT recon with Blue2thprinting; identify devices, detect known vulns & crowdsource data via BTIDALPOOL. Bluetooth 2222: Bluetooth Reconnaissance with Blue2thprinting by @xenokovah.bsky.social ost2.fyi/BT2222 (~8.5 hrs)

Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting

Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting

ost2.fyi

As a DEFCON speaker I get some extra human badges to give away. I’d like to give them to HS/College students who are also #OST2 students. Email me at Xeno at ost2.fyi with a pointer to your OST2 username and proof you’re a student. Most completed OST2 classes wins

🥳 #OST2_5th_Anniversary 🎉 Check out #OST2_5th_Anniversary to join our celebration and see what happened this past year!

🥳 #OST2_5th_Anniversary🎉 OST2 is made possible by instructors who want to help other security engineers learn skills faster. So what we'd really like to see for this coming year are more instructors teaching more diverse topic areas. If you 🫵 have an idea for a class, reach out at teach at ost2.fyi!

OpenSecurityTraining2

Free, deep-dive computer security training: x86 and RISC-V assembly, reverse engineering, exploitation, firmware, debuggers, and trusted computing. All course materials are open-source under Creative...

ost2.fyi

🥳 #OST2_5th_Anniversary🎉 So what can we look forward to this coming 6th year of #OST2's existence? 👇

🥳 #OST2_5th_Anniversary🎉 And finally, thanks to all 37k+ folks who are taking classes at OST2! We had our biggest year yet, adding 8k+ students! Teaching thousands of people at a time how to become better hackers, better engineers, better toolsmiths, and better explorers is why we do what we do!

🥳 #OST2_5th_Anniversary🎉 We're also going to be running a fundraising push for gamification of the OST2 site with many more details dropping soon. If you want to support that effort you can be an early supporter here: www.every.org/ost2/f/lets-...

🥳 #OST2_5th_Anniversary🎉 We're committed to using individual donors' funds to always directly pass through to instructors (never for overhead costs), and we'll once again be passing through your thanks to the current instructors as an honorarium this year. ost2.fyi/Donate-Money...

🥳 #OST2_5th_Anniversary🎉 Thanks to everyone who's donated individually to OST2 this past year! ost2.fyi/Donate-Money...
 Whether with corporate matching through work (we are a US charity after all) or individually through the YouTube page, donations shows us that you truly value what we do!

🥳 #OST2_5th_Anniversary🎉 OST2 needs more sponsors to keep growing! ost2.fyi/Sponsorship.... If you want your company to sponsor #OST2, reach out via email at "sponsor at ost2.fyi". It's much more cost effective than sponsoring conferences, and reaches far more people!

🥳 #OST2_5th_Anniversary🎉 Sponsors like NCC Group @nccgroupinfosec.bsky.social , 3mdeb, and Dark Mentor @darkmentor.com are "donors in kind" who have funded their employees to make classes for OST2!

🥳 #OST2_5th_Anniversary🎉 Returning sponsor Cyber5W @cyber5w.bsky.social ost2.fyi/Sponsor_Cybe... has continued to be a stalwart🥉Bronze Sponsor!

🥳 #OST2_5th_Anniversary🎉 AMI ost2.fyi/Sponsor_AMI which is an Independent BIOS Vendor (IBV) has seen the value of using OST2's Secure Development training ost2.fyi/SecDev1001 & ost2.fyi/SecDev1002 to help their programmers write more secure code, and became a new 🥇Gold Sponsor this past year!

🥳 #OST2_5th_Anniversary🎉 Hex-Rays ost2.fyi/Sponsor_HexR... of IDA Pro fame saw the great "Debuggers 1101: Introductory IDA" course made by Christina Johns @bitmaize.bsky.social and became a new 🥇Gold Sponsor this past year!

🥳 #OST2_5th_Anniversary🎉 Returning 🥇Gold Sponsor @binarly.bsky.social ost2.fyi/Sponsor_Bina... increased their sponsorship this year, by also sponsoring the Firmware Security Learning Path! ost2.fyi/FWSEC_LP_pdf

🥳 #OST2_5th_Anniversary🎉 Partners and Sponsors provide us with funds to help with overhead costs such as running the site, paying video editors, etc, so that individual donations always go directly to instructors to show them your support.

🥳 #OST2_5th_Anniversary🎉 
If you want to see more classes created faster, have your company reach out about Partnering with OST2 like the TCG did! ost2.fyi/Partnership....

🥳 #OST2_5th_Anniversary🎉 We also want to thank our Partner the Trusted Computing Group (TCG), who helped us directly fund the creation of new Trusted Computing classes TC1101-TC1103 & TC2202.

🥳 #OST2_5th_Anniversary🎉 We want to thank *all* of our instructors who delivered class in any year, because without them OST2 wouldn't be possible! And we want to encourage YOU 🫵 to become the next great OST2 instructor!

🥳 #OST2_5th_Anniversary🎉 ost2.fyi/TC2202 On July 14th 2025 Bill Roberts released "Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries" (15h54m avg, 12h50m median, 8h36m to 39h30m range)

Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries

Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries

ost2.fyi

🥳 #OST2_5th_Anniversary🎉 ost2.fyi/BT2222 On Sept 8th Xeno Kovah @xenokovah.bsky.social released "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" (9h5m avg, 7h28m median, 3h50m to 25h16m range)

Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting

Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting

ost2.fyi

🥳 #OST2_5th_Anniversary🎉 ost2.fyi/TC1103 
On March 16th Dimi Tomov of tpm.dev released "Advanced Trusted Platform Module (TPM) usage" (10h26m avg, 12h42m median, 5h38m to 20h55m range)

Trusted Computing 1103: Advanced Trusted Platform Module (TPM) usage

Trusted Computing 1103: Advanced Trusted Platform Module (TPM) usage

ost2.fyi

🥳 #OST2_5th_Anniversary🎉 ost2.fyi/Arch1901
 Our most recent class was released just last week by Antonio Nappa @jeppojeps.bsky.social of Fuzz Society! "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" (8h30m avg, 7h10m median, 3h24m to 18h52m range)

Architecture 1901: From zero to QEMU

Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!

ost2.fyi

🥳 #OST2_5th_Anniversary 🎉 Check out #OST2_5th_Anniversary to join our celebration and see what happened this past year!

After taking this class and understanding more about how QEMU works, I'm looking forward to throwing LLMs at the often painstaking work necessary for re-hosting firmware to run in an emulator like QEMU.

OpenSecurityTraining2@opensectraining.bsky.social · last mo.

📣"Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" by Antonio Nappa @jeppojeps.bsky.social is released!📣 ost2.fyi/Arch1901

Go deeper with TPMs! Machine identity, attestation, PCRs, and extended authorization policies. Build on TC1101 to master platform security. "Trusted Computing 1102: Intermediate TPM Usage" ost2.fyi/TC1102 (~10 hrs) by Dimi Tomov

Trusted Computing 1102: Intermediate Trusted Platform Module (TPM) usage

Trusted Computing 1102: Intermediate Trusted Platform Module (TPM) usage

ost2.fyi

📣"Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" by Antonio Nappa @jeppojeps.bsky.social is released!📣 ost2.fyi/Arch1901

Architecture 1901: From zero to QEMU

Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!

ost2.fyi

GDB is the Swiss Army knife of Linux & embedded debugging. Learn breakpoints, stepping & memory inspection: fast and hands-on. Debuggers 1012: Introductory GDB ost2.fyi/Dbg1012

Debuggers 1012: Introductory GDB

Debuggers 1012: Introductory GDB

ost2.fyi

TPMs are everywhere: laptops, servers, IoT. Learn to harness them for signing, encryption & platform integrity. Hands-on Docker labs included. "Trusted Computing 1101: Introductory TPM Usage" by Dimi Tomov ost2.fyi/TC1101 (~8.5 hrs)

Trusted Computing 1101: Introductory Trusted Platform Module (TPM) usage

Trusted Computing 1101: Introductory Trusted Platform Module (TPM) usage

ost2.fyi

Another thing we meant to mention about the server upgrade is that we've simplified your account settings (the place to edit) and the public profile (the place to view).