OpenSecurityTraining2
@opensectraining.bsky.social
501(c)(3) Nonprofit providing Open Source and Open Access computer security training material. #OST2 re-launched July 2021!
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Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!
Enter the email you have used / will use when registering for beta.ost2.fyi. This will be used to enroll you in the beta class if you are selected. If your account does not exist at the time enrollmen...
forms.gle
📢Call for beta testers!📢
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
While we've had an overwhelming turn out in registration for this class, we still wanted to remind people that there's still time to sign up; since our beta classes are when the instructor is actively watching the forums and responding to feedback.
📢Call for beta testers!📢
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!
Enter the email you have used / will use when registering for beta.ost2.fyi. This will be used to enroll you in the beta class if you are selected. If your account does not exist at the time enrollmen...
forms.gle
November 24, 2025 at 1:33 AM
While we've had an overwhelming turn out in registration for this class, we still wanted to remind people that there's still time to sign up; since our beta classes are when the instructor is actively watching the forums and responding to feedback.
Periodic call for volunteers: We're looking for classes on Apple ecosystem security. E.g. OS internals, binary formats, malware analysis, vulnerability hunting, etc. If you're interested in sharing what you know, reach out at teach🌀ost2.fyi
November 14, 2025 at 1:37 PM
Periodic call for volunteers: We're looking for classes on Apple ecosystem security. E.g. OS internals, binary formats, malware analysis, vulnerability hunting, etc. If you're interested in sharing what you know, reach out at teach🌀ost2.fyi
📢Call for beta testers!📢
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!
Enter the email you have used / will use when registering for beta.ost2.fyi. This will be used to enroll you in the beta class if you are selected. If your account does not exist at the time enrollmen...
forms.gle
November 14, 2025 at 12:10 PM
📢Call for beta testers!📢
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
The "Architecture 1901: From zero to QEMU - A Gentle introduction to emulators from the ground up!" course by Antonio Nappa @jeppojeps.bsky.social will begin November 28th. Sign up here: forms.gle/LUXaThn4YSYS...
This year @binarly.bsky.social has also expanded their sponsorship to the creation of a new #OST2 Firmware Security Learning Path!
ost2.fyi/OST2_LP_FWSE...
ost2.fyi/OST2_LP_FWSE...
November 3, 2025 at 11:45 AM
This year @binarly.bsky.social has also expanded their sponsorship to the creation of a new #OST2 Firmware Security Learning Path!
ost2.fyi/OST2_LP_FWSE...
ost2.fyi/OST2_LP_FWSE...
We are happy to announce that @binarly.bsky.social has renewed their 🥇Gold-level sponsorship of #OST2!
Learn more about what they do in firmware & supply chain security here: ost2.fyi/Sponsor_Bina...
Learn more about what they do in firmware & supply chain security here: ost2.fyi/Sponsor_Bina...
November 3, 2025 at 11:43 AM
We are happy to announce that @binarly.bsky.social has renewed their 🥇Gold-level sponsorship of #OST2!
Learn more about what they do in firmware & supply chain security here: ost2.fyi/Sponsor_Bina...
Learn more about what they do in firmware & supply chain security here: ost2.fyi/Sponsor_Bina...
Periodic call for volunteers: We're looking for someone to teach classes on stealth malware, such as rootkits, bootkits, and other security-evading software.
October 27, 2025 at 11:23 AM
Periodic call for volunteers: We're looking for someone to teach classes on stealth malware, such as rootkits, bootkits, and other security-evading software.
We've officially had our 31337th student join at OST2! We're waiting to hear back to see if the lucky registrant wants to be publicly lauded for their random achievement or not ;)
October 27, 2025 at 11:21 AM
We've officially had our 31337th student join at OST2! We're waiting to hear back to see if the lucky registrant wants to be publicly lauded for their random achievement or not ;)
Reposted by OpenSecurityTraining2
🧵For those who are curious about the completion time distribution during the beta of my #OST2 BT2222 class, here it is. The average completion time was 8h25m, the median was 8h10m, the min was 3h50m, and the max was 15h22m
October 20, 2025 at 10:41 AM
🧵For those who are curious about the completion time distribution during the beta of my #OST2 BT2222 class, here it is. The average completion time was 8h25m, the median was 8h10m, the min was 3h50m, and the max was 15h22m
🙌We're happy to announce OST2 now has over 31k students registered! 🥳 By the time we noticed we crossed the 30k mark, we were already at 30.5, so we figured we'd wait for 31k, which is now!🎉
👏Kudos to all the students taking and finishing classes!👏
👏Kudos to all the students taking and finishing classes!👏
October 10, 2025 at 11:56 AM
🙌We're happy to announce OST2 now has over 31k students registered! 🥳 By the time we noticed we crossed the 30k mark, we were already at 30.5, so we figured we'd wait for 31k, which is now!🎉
👏Kudos to all the students taking and finishing classes!👏
👏Kudos to all the students taking and finishing classes!👏
We have made Francesco Pollicino's "Fuzzing 1001: Introductory Fuzzing" class playlist public here: www.youtube.com/playlist?lis... for those who'd like to download the videos for offline consumption.
Fuzzing 1001: Introductory Fuzzing - YouTube
View the full free MOOC at https://ost2.fyi/Fuzz1001. This hands-on fuzzing course introduces a software-testing technique for finding security vulnerabiliti...
www.youtube.com
October 10, 2025 at 11:53 AM
We have made Francesco Pollicino's "Fuzzing 1001: Introductory Fuzzing" class playlist public here: www.youtube.com/playlist?lis... for those who'd like to download the videos for offline consumption.
Reposted by OpenSecurityTraining2
🧵I made a structural update to the Blue2thprinting #OST2 class today: The previous class was structured like "A:B:[C:D:E]:F:G" where F & G were collecting your own data, and [C-E] were understanding what Tell_Me_Everything.py was trying to tell you about the analyzed data…
September 29, 2025 at 12:11 AM
🧵I made a structural update to the Blue2thprinting #OST2 class today: The previous class was structured like "A:B:[C:D:E]:F:G" where F & G were collecting your own data, and [C-E] were understanding what Tell_Me_Everything.py was trying to tell you about the analyzed data…
With the release of ost2.fyi/BT2222, we have posted a brand new OST2 Bluetooth Learning Path which shows future classes that are planned, as well as classes which we need volunteers for. Freshly updated today: ost2.fyi/OST2_LP_Blue...
September 29, 2025 at 10:44 AM
With the release of ost2.fyi/BT2222, we have posted a brand new OST2 Bluetooth Learning Path which shows future classes that are planned, as well as classes which we need volunteers for. Freshly updated today: ost2.fyi/OST2_LP_Blue...
The "Trusted Computing 1102: Intermediate Trusted Platform Module (TPM) usage" ost2.fyi/TC2202 class release has updated 3 #OST2 learning paths
Secure Software Design & Implementation - ost2.fyi/OST2_LP_SecD...
System Security - ost2.fyi/OST2_LP_SysS...
Windows Security - ost2.fyi/OST2_LP_Wind...
Secure Software Design & Implementation - ost2.fyi/OST2_LP_SecD...
System Security - ost2.fyi/OST2_LP_SysS...
Windows Security - ost2.fyi/OST2_LP_Wind...
September 22, 2025 at 11:19 AM
The "Trusted Computing 1102: Intermediate Trusted Platform Module (TPM) usage" ost2.fyi/TC2202 class release has updated 3 #OST2 learning paths
Secure Software Design & Implementation - ost2.fyi/OST2_LP_SecD...
System Security - ost2.fyi/OST2_LP_SysS...
Windows Security - ost2.fyi/OST2_LP_Wind...
Secure Software Design & Implementation - ost2.fyi/OST2_LP_SecD...
System Security - ost2.fyi/OST2_LP_SysS...
Windows Security - ost2.fyi/OST2_LP_Wind...
📣"Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries" by Bill Roberts is now released!📣
ost2.fyi/TC2202
This course provides a comprehensive introduction to Trusted Platform Module (TPM) 2.0 programming using the Python-based tpm2-pytss library.
ost2.fyi/TC2202
This course provides a comprehensive introduction to Trusted Platform Module (TPM) 2.0 programming using the Python-based tpm2-pytss library.
September 15, 2025 at 10:14 AM
📣"Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries" by Bill Roberts is now released!📣
ost2.fyi/TC2202
This course provides a comprehensive introduction to Trusted Platform Module (TPM) 2.0 programming using the Python-based tpm2-pytss library.
ost2.fyi/TC2202
This course provides a comprehensive introduction to Trusted Platform Module (TPM) 2.0 programming using the Python-based tpm2-pytss library.
Periodic call for volunteers: we've got a deep slate of Bluetooth classes on the horizon, but we need classes on other wireless protocols. If you'd be interested in teaching a class on satellite, cell, WiFi, Zigbee, LoRa, Thread, etc, let us know at teach🌀ost2.fyi
September 9, 2025 at 11:07 AM
Periodic call for volunteers: we've got a deep slate of Bluetooth classes on the horizon, but we need classes on other wireless protocols. If you'd be interested in teaching a class on satellite, cell, WiFi, Zigbee, LoRa, Thread, etc, let us know at teach🌀ost2.fyi
If anyone from the EU would be interested in helping get #OST2 classes added to digital-skills-jobs.europa.eu/en/cyber-ski..., please reach out
Cyber Skills Academy - Knowledge and training
The Cyber Skills Academy will foster knowledge generation through education and training by establishing a common EU approach to cybersecurity training
digital-skills-jobs.europa.eu
September 9, 2025 at 11:06 AM
If anyone from the EU would be interested in helping get #OST2 classes added to digital-skills-jobs.europa.eu/en/cyber-ski..., please reach out
Reposted by OpenSecurityTraining2
🧵I originally started working on Blue2thprinting to try and figure out where @veronicakovah.bsky.social's over-the-air exploits against Texas Instruments & Silicon Labs (darkmentor.com/publication/...) applied...
September 8, 2025 at 10:05 AM
🧵I originally started working on Blue2thprinting to try and figure out where @veronicakovah.bsky.social's over-the-air exploits against Texas Instruments & Silicon Labs (darkmentor.com/publication/...) applied...
📣"Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" is now released!📣
ost2.fyi/BT2222
This class teaches you about the 30+ data types that the Blue2thprinting software can collect for when you're trying to determine what a device is, and whether it has any known vulnerabilities.
ost2.fyi/BT2222
This class teaches you about the 30+ data types that the Blue2thprinting software can collect for when you're trying to determine what a device is, and whether it has any known vulnerabilities.
September 8, 2025 at 9:23 AM
📣"Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" is now released!📣
ost2.fyi/BT2222
This class teaches you about the 30+ data types that the Blue2thprinting software can collect for when you're trying to determine what a device is, and whether it has any known vulnerabilities.
ost2.fyi/BT2222
This class teaches you about the 30+ data types that the Blue2thprinting software can collect for when you're trying to determine what a device is, and whether it has any known vulnerabilities.
Are you making your own luck, by taking (and finishing) OST2 classes?
ost2.fyi/Learning-Pat...
ost2.fyi/Learning-Pat...
August 25, 2025 at 11:21 AM
Are you making your own luck, by taking (and finishing) OST2 classes?
ost2.fyi/Learning-Pat...
ost2.fyi/Learning-Pat...
Reposted by OpenSecurityTraining2
If you, like me, are curious about the thousands of BT devices that are secretly making noise around us every day (and whether they’re vulnerable to exploitation), then this is the class for you. You can register here: forms.gle/MncQkVAL8Laq...
August 2, 2025 at 1:46 PM
If you, like me, are curious about the thousands of BT devices that are secretly making noise around us every day (and whether they’re vulnerable to exploitation), then this is the class for you. You can register here: forms.gle/MncQkVAL8Laq...
Reposted by OpenSecurityTraining2
The videos came back early so the class has begun early! As a reminder, betas are perhaps the best time to participate, because it’s the only time I’m actively checking the forums multiple times per day and quickly fixing material if needed
📢Call for beta testers!📢
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting
Enter the email you have used / will use when registering for beta.ost2.fyi. This will be used to enroll you in the beta class if you are selected. If your account does not exist at the time enrollmen...
forms.gle
July 28, 2025 at 10:34 AM
The videos came back early so the class has begun early! As a reminder, betas are perhaps the best time to participate, because it’s the only time I’m actively checking the forums multiple times per day and quickly fixing material if needed
📢Call for beta testers!📢
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting
Enter the email you have used / will use when registering for beta.ost2.fyi. This will be used to enroll you in the beta class if you are selected. If your account does not exist at the time enrollmen...
forms.gle
July 21, 2025 at 12:15 PM
📢Call for beta testers!📢
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
The beta for "Bluetooth 2222: Bluetooth reconnaissance with Blue2thprinting" by @xenokovah.bsky.social will start Aug. 4th and run for 1 month.
forms.gle/KytM2Sxaez1x...
What if instead of taking Microsoft or an anti-DRM advocate's word for what TPMs can and can't do, you went and learned about it yourself? The beta class teaching you how to talk to TPMs in Python starts today! Register here by EoD to join: forms.gle/YydoqnG34qZM...
"Trusted Computing 2202: TPM 2.0 Programming using Python and the tpm2-pytss libraries" Pre-Class Survey
TC2202 builds on top of TC1101 (https://ost2.fyi/TC1101) & TC1102 (https://ost2.fyi/TC1101), but involves interacting with TPMs via Python instead of e.g. C/C++. It will cover the following material i...
forms.gle
July 14, 2025 at 10:31 AM
What if instead of taking Microsoft or an anti-DRM advocate's word for what TPMs can and can't do, you went and learned about it yourself? The beta class teaching you how to talk to TPMs in Python starts today! Register here by EoD to join: forms.gle/YydoqnG34qZM...