Carlos Guerra
@cguerra.bsky.social
Tech Advisor on digital security and circumvention | Venezuelan
Reposted by Carlos Guerra
PSA: we're aware that Signal is down for some people. This appears to be related to a major AWS outage. Stand by.
October 20, 2025 at 8:00 AM
PSA: we're aware that Signal is down for some people. This appears to be related to a major AWS outage. Stand by.
Just want these to exist outside my phone, amazing concert!
July 13, 2025 at 4:37 PM
Just want these to exist outside my phone, amazing concert!
Let's talk metadata: Today, a friend of mine in a risky environment asked me how to make sure an image they designed is not traceable back to them, since it's been a while since the last time I checked "deeply", it was time for a refresh!!
June 29, 2025 at 3:25 PM
Let's talk metadata: Today, a friend of mine in a risky environment asked me how to make sure an image they designed is not traceable back to them, since it's been a while since the last time I checked "deeply", it was time for a refresh!!
Enabling Android Advanced Protection on a Pixel from the stable update: very easy to activate, and I haven't noticed any usage problems or incompatibilities. The intrusion logging isn't there yet (so alert on that one), and I couldn't disable Play Protect or enable 2G networks as advertised.
June 16, 2025 at 3:15 PM
Enabling Android Advanced Protection on a Pixel from the stable update: very easy to activate, and I haven't noticed any usage problems or incompatibilities. The intrusion logging isn't there yet (so alert on that one), and I couldn't disable Play Protect or enable 2G networks as advertised.
Reposted by Carlos Guerra
“The truth is that a tattoo identifying Tren de Aragua does not exist,” she told me. “Tren de Aragua does not use any tattoos as a form of gang identification; no Venezuelan gang does.”
April 1, 2025 at 1:08 AM
“The truth is that a tattoo identifying Tren de Aragua does not exist,” she told me. “Tren de Aragua does not use any tattoos as a form of gang identification; no Venezuelan gang does.”
Reposted by Carlos Guerra
Starting today, our chapter in Venezuela will be operating in exile. The growing threat to its members has made the situation too dangerous to remain in the country.
Our statement here ⬇️
Our statement here ⬇️
Venezuela: Transparency International Forced into Exile Amid Growing…
Transparency International's chapter in Venezuela will now operate in exile due to a troubling increase climate of repression.
www.transparency.org
March 13, 2025 at 1:20 PM
Starting today, our chapter in Venezuela will be operating in exile. The growing threat to its members has made the situation too dangerous to remain in the country.
Our statement here ⬇️
Our statement here ⬇️
Reposted by Carlos Guerra
I’ve posted a detailed explanation of why the claimed ESP32 Bluetooth chip “backdoor” is not a backdoor. It’s just a poor security practice, which is found in other Bluetooth chips by vendors like Broadcom, Cypress, and Texas Instruments too. https://darkmentor.com/blog/esp32_non-backdoor/
The ESP32 "backdoor" that wasn't | Dark Mentor LLC
4 day class covering the full Bluetooth Low Energy (BLE) protocol stack from the bottom (PHY) up to the top (GATT). The core of the class is built around playing with a game application on an Android phone, talking via Bluetooth to an IoT-type piece of hardware, and analyzing the communication between them. The 4th day is focused on assessing a cutomized Ultra-Vulnerable Peripheral firmware, running on Zephyr RTOS, which has had vulnerabilities introduced into it which are representative of vulnerabilities found in the past across many other platforms.
darkmentor.com
March 9, 2025 at 12:50 PM
I’ve posted a detailed explanation of why the claimed ESP32 Bluetooth chip “backdoor” is not a backdoor. It’s just a poor security practice, which is found in other Bluetooth chips by vendors like Broadcom, Cypress, and Texas Instruments too. https://darkmentor.com/blog/esp32_non-backdoor/
Reposted by Carlos Guerra
Yea this would be physical
March 8, 2025 at 11:54 PM
Yea this would be physical
Reposted by Carlos Guerra
Three Bulgarians were sentenced for spying for Russia in the UK today. This is one of their chats - using IMSI catchers to spy on Ukrainians in the German military base
March 7, 2025 at 6:52 PM
Three Bulgarians were sentenced for spying for Russia in the UK today. This is one of their chats - using IMSI catchers to spy on Ukrainians in the German military base
Reposted by Carlos Guerra
🔔NEW: Apple threat notification 🔔
Apple have just sent new notifications to individual's targeted by highly-invasive mobile spyware!
Reach out to our team at @Amnesty's Security Lab or trusted experts if you received this critical warning
www.amnesty.org/en/latest/ne...
Apple have just sent new notifications to individual's targeted by highly-invasive mobile spyware!
Reach out to our team at @Amnesty's Security Lab or trusted experts if you received this critical warning
www.amnesty.org/en/latest/ne...
Apple threat notifications: What they mean and what you can do
Apple threat notifications: What they mean and what you can do
www.amnesty.org
March 5, 2025 at 6:25 PM
🔔NEW: Apple threat notification 🔔
Apple have just sent new notifications to individual's targeted by highly-invasive mobile spyware!
Reach out to our team at @Amnesty's Security Lab or trusted experts if you received this critical warning
www.amnesty.org/en/latest/ne...
Apple have just sent new notifications to individual's targeted by highly-invasive mobile spyware!
Reach out to our team at @Amnesty's Security Lab or trusted experts if you received this critical warning
www.amnesty.org/en/latest/ne...
Reposted by Carlos Guerra
📣 📣 We need your feedback for the 2025 Global Gathering. While TCU has been impacted by the recent freeze, we are moving forward with hosting the GG, albeit on a different scale than previously planned.
March 3, 2025 at 10:15 PM
📣 📣 We need your feedback for the 2025 Global Gathering. While TCU has been impacted by the recent freeze, we are moving forward with hosting the GG, albeit on a different scale than previously planned.
Reposted by Carlos Guerra
MY ACCOMPLISHMENTS THIS WEEK
1. Consciousness
2. Respiration
3. I petted several cats
4. Consumed pizza
5. Strategic AND tactical napping
1. Consciousness
2. Respiration
3. I petted several cats
4. Consumed pizza
5. Strategic AND tactical napping
February 23, 2025 at 7:18 PM
MY ACCOMPLISHMENTS THIS WEEK
1. Consciousness
2. Respiration
3. I petted several cats
4. Consumed pizza
5. Strategic AND tactical napping
1. Consciousness
2. Respiration
3. I petted several cats
4. Consumed pizza
5. Strategic AND tactical napping
Reposted by Carlos Guerra
Backdooring popular encryption to fight crime is such a silly idea I can sum up the argument in one sentence: criminals will set up and use the non-backdoored version making everyone else less secure.
February 8, 2025 at 11:56 AM
Backdooring popular encryption to fight crime is such a silly idea I can sum up the argument in one sentence: criminals will set up and use the non-backdoored version making everyone else less secure.
Reposted by Carlos Guerra
🧵 Amnesty International is appalled by the arbitrary detention of human rights defender (HRD) Carlos Correa and we call on Nicolás Maduro to immediately and unconditionally release him and other HRDs in #Venezuela.
January 9, 2025 at 7:53 AM
🧵 Amnesty International is appalled by the arbitrary detention of human rights defender (HRD) Carlos Correa and we call on Nicolás Maduro to immediately and unconditionally release him and other HRDs in #Venezuela.
Reposted by Carlos Guerra
Fellowship for human rights defenders, journalists, and/or technologists working in civil society orgs to train with Amnesty Tech's Security Lab to build skills and knowledge on advanced digital threats and forensic investigation techniques: careers.amnesty.org/jobs/vacancy...
Amnesty International Careers
Amnesty International Careers, Jobs, Search and Apply
careers.amnesty.org
January 11, 2025 at 12:25 PM
Fellowship for human rights defenders, journalists, and/or technologists working in civil society orgs to train with Amnesty Tech's Security Lab to build skills and knowledge on advanced digital threats and forensic investigation techniques: careers.amnesty.org/jobs/vacancy...
Reposted by Carlos Guerra
Opposite of "if you can't say anything nice, don't say anything" is also true:
If you have something nice to say, just say it. Out loud and offline
A stranger looks good today, you're glad to know someone, you're happy to see familiar folks, you love someone's work...
It's just nice to feel human
If you have something nice to say, just say it. Out loud and offline
A stranger looks good today, you're glad to know someone, you're happy to see familiar folks, you love someone's work...
It's just nice to feel human
Ok wait
What’s your best, most impactful, small habit that you’ve embraced that you like and would recommend to others?
What’s your best, most impactful, small habit that you’ve embraced that you like and would recommend to others?
January 2, 2025 at 6:03 AM
Opposite of "if you can't say anything nice, don't say anything" is also true:
If you have something nice to say, just say it. Out loud and offline
A stranger looks good today, you're glad to know someone, you're happy to see familiar folks, you love someone's work...
It's just nice to feel human
If you have something nice to say, just say it. Out loud and offline
A stranger looks good today, you're glad to know someone, you're happy to see familiar folks, you love someone's work...
It's just nice to feel human
Reposted by Carlos Guerra
There are depressingly regular comments in Doctor Who fandom about the show going "woke" - mate, what show have you been watching for literally decades? It's always been that way.
December 28, 2024 at 11:38 PM
There are depressingly regular comments in Doctor Who fandom about the show going "woke" - mate, what show have you been watching for literally decades? It's always been that way.
Reposted by Carlos Guerra
This is i-would-print-it-and-put-it-in-my-board-if-I-had-one amazing, bookmarked!
When writing security guidance, without a light touch you can scare or overwhelm your audience. The advice often ages quickly, so you need a plan to help ensure it continues to make sense to future readers. It also needs to be tuned for YOUR community. source.opennews.org/articles/adv...
Advice for sharing security advice
How to tailor guidance for your audience and come up with a plan for keeping it up-to-date
source.opennews.org
December 21, 2024 at 8:02 AM
This is i-would-print-it-and-put-it-in-my-board-if-I-had-one amazing, bookmarked!
Reposted by Carlos Guerra
Open a PDF in Acrobat to edit.
No, I don't want the zoom level to be 300% by default.
No, I don't want to turn on your useless AI shit. How is it going to do anything even remotely useful with a USCIS form? Fuck off!
What the actual fuck NO I DON'T WANT SOME HELP I JUST WANT TO FILL THIS OUT!
No, I don't want the zoom level to be 300% by default.
No, I don't want to turn on your useless AI shit. How is it going to do anything even remotely useful with a USCIS form? Fuck off!
What the actual fuck NO I DON'T WANT SOME HELP I JUST WANT TO FILL THIS OUT!
December 16, 2024 at 11:30 PM
Open a PDF in Acrobat to edit.
No, I don't want the zoom level to be 300% by default.
No, I don't want to turn on your useless AI shit. How is it going to do anything even remotely useful with a USCIS form? Fuck off!
What the actual fuck NO I DON'T WANT SOME HELP I JUST WANT TO FILL THIS OUT!
No, I don't want the zoom level to be 300% by default.
No, I don't want to turn on your useless AI shit. How is it going to do anything even remotely useful with a USCIS form? Fuck off!
What the actual fuck NO I DON'T WANT SOME HELP I JUST WANT TO FILL THIS OUT!
Reposted by Carlos Guerra
![Neo: "Do you know how to do that?"
Trinity: "Not yet."
[Entire weekend of hyperfocus]
Trinity: "Now I know how but no longer want to do it."](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:f55kfczvcsjlaota4ep2xvhx/bafkreibkmxqe2sjpdfdsi6gk75zn7qiiffbihwxpbtq4iv2rgab33ltyhi@jpeg)
Make an obsidian-related video of less than 20min challenge
December 12, 2024 at 8:44 AM
Make an obsidian-related video of less than 20min challenge
Reposted by Carlos Guerra
I want to be able to tell my computer, "This is the volume at which I want to hear EVERYTHING. Do whatever you have to behind the scenes so that no matter if I'm watching YouTube or Max or Netflix or listening to music it will all be at the same volume with no intervention on my part."
December 9, 2024 at 2:09 AM
I want to be able to tell my computer, "This is the volume at which I want to hear EVERYTHING. Do whatever you have to behind the scenes so that no matter if I'm watching YouTube or Max or Netflix or listening to music it will all be at the same volume with no intervention on my part."