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Sebastian Garcia

@eldraco.bsky.social
80 followers 68 following 18 posts

Cybersecurity Researcher and Assist Prof in ČVUT University. Machine Learning. AI. Detection with IDS/IPS in the network. Reinforcement Learning. Agents. Attacking/Defending. DNS. VPNs. Honeypots. Malware analysis.

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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 30/09/2026
New Slips version v1.1.24 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.24 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 11/09/2026
A few shots from yesterday’s art installation opening at the Stratosphere Laboratory offices by Lili Fiallo! We had a beautiful evening, games, food, drinks and talks! Thank you Lili for your beautiful work, which we will treasure at our lab, it really captures our spirit!
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Reposted by Sebastian Garcia
Virus Bulletin @virusbtn.bsky.social · 13/09/2026
For those who like to submit at the very last minute, the #VB2026 call for last-minute papers closes today (13 Sept) at midnight Hawaii time (10am UTC on Monday). You will be able to add, view and edit your submissions until the deadline! www.virusbulletin.com/conference/v...
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Reposted by Sebastian Garcia
Internet Archive @archive.org · 23/04/2026
🧵 We tend to think the internet is permanent, but VANISHING CULTURE—the new 📚 from Internet Archive—starts with a simple reality: our digital record is far more fragile than we think 🕳️ 📖 Read for free: archive.org/details/vani... 🛒 Purchase in print: www.betterworldbooks.com/product/deta... ⬇️
Book cover titled “Vanishing Culture” on a teal background. Pixel-art style graphics show a VHS tape, open book, film reel, chain link, and vinyl record dissolving into digital fragments. At the bottom, a cursor icon points to the word “SAVE,” alongside an archive-style building icon, evoking digital preservation.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 09/09/2026
We are super excited to welcome artist Lili Fiallo and her art installation "Aca Toy" to our home at Stratosphere Laboratory! Art, AI, and Cybersecurity sharing the same space. ❤️🖤
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 08/09/2026
Every year, we hear people saying they're "not technical enough" for this course. They are the ones who finish it. 📅 Classes kick off on September 24, 2026. 📅 Late registrations close on October 8, 2026. 🔗 Register: bsy.cz/go
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 29/07/2026
This year marks three years since we published our CTU-SME-11 dataset: 11 devices, 7 days, 99 million expert-labeled network flows with real benign and malicious traffic. 🔗 Explore the dataset: doi.org/10.5281/zeno...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 09/07/2026
We believe practical cybersecurity education should be available to anyone with curiosity and an internet connection, regardless of where they live or what they can afford. Help us spread the word! Learn with us through our free or professional track: cybersecurity.bsy.fel.cvut.cz
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Reposted by Sebastian Garcia
Help Net Security @helpnetsecurity.com · 03/07/2026
Non-interactive SSH attacks dominate after login 📖 Read more: www.helpnetsecurity.com/2026/07/03/r... #cybersecurity #cybersecuritynews #authentication #bot #devicefingerprinting #honeypots #LLMs #SSH #threatintelligence @verovaleros.bsky.social @eldraco.bsky.social
helpnetsecurity.com
Non-interactive SSH attacks dominate after login - Help Net Security
Non-interactive SSH attacks now make up over 99% of honeypot logins, new research finds, as scanners run one command and disconnect.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 16/06/2026
Registrations are OPEN for the “Introduction to Security” course 2026. 🔗 Read more:
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 10/06/2026
Our AI Deception Project Takes Top Prize at CTU 🎉 www.aic.fel.cvut.cz/news/ai-dece...
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Sebastian Garcia @eldraco.bsky.social · 06/06/2026
Ángel de la soledad Y de la desolación Preso de tu ilusión Vas a bailar … a bailar bailar…
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 02/06/2026
New Slips version v1.1.21 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.21 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
The Citizen Lab @citizenlab.ca · 29/05/2026
Doctoral fellow Swantje Lange @swantjelan.bsky.social spoke with the Hasso Plattner Institut @hpi.bsky.social about sophisticated surveillance campaigns being used to exploit mobile networks, sharing that “the mobile network is highly opaque and extremely complex.” hpi.de/en/article/r...
hpi.de
Researchers uncover espionage in mobile networks
Like a spy movie: Researchers from HPI and the University of Toronto reveal how surveillance actors exploit mobile networks to track people worldwide.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 20/05/2026
Security of an In-orbit Satellite: Detection of Compromise Through Integrity 🔗 Read more:
stratosphereips.org
Security of an In-orbit Satellite: Detection of Compromise Through Integrity — Stratosphere Laboratory
Small satellites are increasingly vulnerable to cyberattacks, yet their resource constraints make implementing robust security mechanisms a significant challenge. This thesis explores how to protect the...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 14/05/2026
Poster: Multi-Objective Model Selection Pipeline for Network Flow Classification at POSTERS 2026 🔗 Read more:
stratosphereips.org
Poster: Multi-Objective Model Selection Pipeline for Network Flow Classification at POSTERS 2026 — Stratosphere Laboratory
Training classifiers for network intrusion detection is hindered by two types of problems: data challenges (lack of labels, class imbalance, non-IID data, and concept drift) and engineering challenges...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 07/05/2026
Dean's Award Outstanding Teaching "Lecturer Category" to Sebastian Garcia 🔗 Read more:
stratosphereips.org
Dean's Award Outstanding Teaching "Lecturer Category" to Sebastian Garcia — Stratosphere Laboratory
Sebastian has just been awarded by the Dean of the Faculty of Electrical Engineering, Czech Technical University in Prague, for his outstanding teaching performance in the Winter Semester 2025/2026!
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 01/04/2026
New Slips version v1.1.19 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.19 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 24/03/2026
NetSecGame - A Framework for Training and Evaluating AI Agents in Network Security Environments 🔗 Read more: www.stratosphereips.org/blog/2026/1/...
stratosphereips.org
Build Cyber Agents with NetSecGame v0.1.0 — Stratosphere Laboratory
Build, train, and evaluate network security agents using NetSecGame. A high-speed, Docker-ready framework for Reinforcement Learning and cyber research.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 24/03/2026
Adaptive Response in Slips IDS as Immune T Cells 🔗 Read more:
stratosphereips.org
Adaptive Response in Slips IDS as Immune T Cells — Stratosphere Laboratory
The T Cell module was created to give Slips a stateful adaptive response layer on top of its existing evidence pipeline.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 23/03/2026
Adapting Detections in Slips with Immune Pseudo-Generated Regexes 🔗 Read more:
stratosphereips.org
Adapting Detections in Slips with Immune Pseudo-Generated Regexes — Stratosphere Laboratory
The RegexGenerator module was created to give Slips an adaptive way to discover new string-based detectors for changing indicators such as domains, URIs, filenames, TLS SNI values, and certificate common...
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Reposted by Sebastian Garcia
Veronica Valeros @verovaleros.bsky.social · 18/12/2025
Most malware traffic analysis fails when the answer isn’t obvious. Our signature training at Black Hat Asia with @eldraco.bsky.social, teaches a repeatable methodology for analyzing network traffic that holds up in complex cases. Join us blackhat.com/asia-26/trai... ! #blackhat #training
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 10/12/2025
What if we told you we built a system that can break every LLM assistant you throw at it? Our tool presented today at #BHEU Arsenal, achieves just that! 💾 Explore more here: github.com/stratosphere...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 01/12/2025
New Slips version v1.1.16 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.16 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 14/11/2025
The StratoCyberLab (SCL) is our local cyber range, where anyone can test and practice their offensive and defensive cybersecurity skills: github.com/stratosphere... 🔒 Local-only. No cloud. No tracking. No login. No data collection. ⚙️ Easy-To-Use. Only Docker is required. #CyberRange #Education
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 13/11/2025
Woohoo! A new edition of our Stratosphere newsletter is just out! Catch up with some of our team activities since the last edition! 🚀 www.linkedin.com/pulse/strato...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 10/11/2025
If you missed our talk at #ekoparty, here's a poster summarizing some of our results on evaluating ARACNE, our multi-agent framework for autonomous Linux shell security testing. Our evaluation is still ongoing, and we hope to share more results soon 🚀
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Reposted by Sebastian Garcia
Etienne - Tek @tek.randhome.io · 07/11/2025
EFF Teams Up With AV Comparatives to Test Android Stalkerware Detection by Major Antivirus Apps | Electronic Frontier Foundation www.eff.org/deeplinks/2025/11/eff-t…
eff.org
EFF Teams Up With AV Comparatives to Test Android Stalkerware Detection by Major Antivirus Apps
EFF has, for many years, raised the alarm about the proliferation of stalkerware—commercially-available apps designed to be installed covertly on another person’s device to exfiltrate data from that device without their knowledge. We’ve teamed up with the researchers at AV Comparatives to test the most popular anti-virus products for Android to see how well they detect the most popular stalkerware products in 2025
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 31/10/2025
New Slips version v1.1.15 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.15 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 30/10/2025
Every year, thousands join our CTU Introduction to Security — where curiosity meets courage, and learning means attacking & defending. This is our heartbeat. 🎬 Watch the premiere → www.youtube.com/watch?v=FLtX... #CyberSecurity #Animation
youtube.com
Official Intro Theme — CTU Introduction to Security
Every year, hundreds of students start Introduction to Security — a 14-week, hands-on course where curiosity meets courage, and learning means breaking, building, and defending…
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 29/10/2025
🚀 At #ekoparty, our team presented ARACNE, a multi-agent LLM based offensive and defensive agent for Linux shell systems, and one of the largest LLM model evaluations to date. 🔗 Slides: bit.ly/EKO21ARACNES... 🔗 Code: bit.ly/EKO21ARACNEC... 🔗 Paper: bit.ly/EKO21ARACNEP...
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Reposted by Sebastian Garcia
Joseph Cox @josephcox.bsky.social · 28/10/2025
Grokipedia is the antithesis of everything that makes Wikipedia good, useful, and human. Grokipedia looks like what you would get if you told an LLM to go make an anti-woke encyclopedia, which is essentially exactly what Elon Musk did. www.404media.co/grokipedia-i...
404media.co
Grokipedia Is the Antithesis of Everything That Makes Wikipedia Good, Useful, and Human
Grokipedia is not a 'Wikipedia competitor.' It is a fully robotic regurgitation machine designed to protect the ego of the world’s wealthiest man.
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Reposted by Sebastian Garcia
bleeptrack @bleeptrack.de · 26/10/2025
Missed my my talk for #roguelikecelebration yesterday? Here you go! www.youtube.com/live/kBfytrn... #generative #procedural #creativecoding
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Reposted by Sebastian Garcia
In Otter News @in-otter-news.bsky.social · 26/10/2025
Thanks for letting us know, Steve.
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Stratosphere Laboratory @stratosphereips.bsky.social · 16/10/2025
Our colleague Lukáš Forst talked with Česká televize on the partial end of support for Windows 10, and what are the implications for European users. Watch the full segment in Czech here: www.ceskatelevize.cz/porady/10971...
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 15/10/2025
New Slips version v1.1.12 is here! 🔗 Read more:
stratosphereips.org
New Slips version v1.1.12 is here! — Stratosphere Laboratory
Our team is excited to share the latest news and features of Slips, our behavioral-based machine learning intrusion detection system.
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Reposted by Sebastian Garcia
Andrew Couts @couts.bsky.social · 03/10/2025
NEW: ICE is planning to hire a team of nearly 30 people to surveil social media 24/7, build dossiers on people, and flag them for arrest and deportation. @dell.bsky.social has the scoop: www.wired.com/story/ice-so...
wired.com
ICE Wants to Build Out a 24/7 Social Media Surveillance Team
Documents show ICE plans to hire dozens of contractors to scan X, Facebook, TikTok, and other platforms to target people for deportation.
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Emanuel Maiberg @emanuelmaiberg.bsky.social · 22/09/2025
We're suing ICE to release spyware contracts the public has the right to see. Could not be more grateful to our subscribers for putting us in a position to be able to do this www.404media.co/were-suing-i...
404media.co
We’re Suing ICE for Its $2 Million Spyware Contract
404 Media has filed a lawsuit against ICE for access to its contract with Paragon, a company that sells powerful spyware for breaking into phones and accessing encrypted messaging apps.
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Joseph Cox @josephcox.bsky.social · 22/09/2025
We just sued ICE. Support us here: 404media.co/membership/
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Sebastian Garcia @eldraco.bsky.social · 12/08/2025
Thanks blackhat and defcon!
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Sebastian Garcia @eldraco.bsky.social · 12/08/2025
Oppose the new EU regulation to mass surveil your digital communications, hidden behind the important topic of child abuse. fightchatcontrol.eu. You can make a difference by telling the representatives of your country. #masssurveillance #EUregulation #surveillance
fightchatcontrol.eu
Fight Chat Control - Protect Digital Privacy in the EU
Learn about the EU Chat Control proposal and contact your representatives to protect digital privacy and encryption.
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Sebastian Garcia @eldraco.bsky.social · 11/08/2025
The "Introduction to Security" free MOOC course is open for registrations again in 2025! 𝗢𝗻𝗹𝗶𝗻𝗲, 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻, intense, 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹!

👉🏻 cybersecurity.bsy.fel.cvut.cz
 #cybersec #infosec #blueteam #redteam #Training @stratosphereips.bsky.social
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Reposted by Sebastian Garcia
NGI Sargasso @ngisargasso.bsky.social · 07/08/2025
Discover our Open Call 2️⃣ innovator Melisseus: Large Language Models as Defensive Honeypots, by @stratosphereips.bsky.social 🇨🇿 & @umontreal-en.bsky.social 🇨🇦 🌊💡Check their #NGISargassoInnovator portfolio for more info: ngisargasso.eu/innovator/me... #Cybersecurity #NGISargasso @eldraco.bsky.social
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Sebastian Garcia @eldraco.bsky.social · 03/08/2025
The "Introduction to Security" MOOC course is open for registrations in 2025! 𝗢𝗻𝗹𝗶𝗻𝗲, 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻, intense, 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹, 𝗮𝗻𝗱 𝗳𝗿𝗲𝗲!
The class includes a new professional tier with an EU-recognized certificate!
👉🏻 cybersecurity.bsy.fel.cvut.cz
 #cybersec #infosec #Training @stratosphereips.bsky.social
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Reposted by Sebastian Garcia
Sebastian Garcia @eldraco.bsky.social · 01/08/2025
𝗢𝗻𝗹𝗶𝗻𝗲, 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻, 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹, intense 𝗮𝗻𝗱 𝗳𝗿𝗲𝗲! CTU's "Introduction to Security" class opens online for free and includes a new professional tier with an EU-recognized certificate! 👉🏻 cybersecurity.bsy.fel.cvut.cz #cybersec #infosec #blueteam #redteam #Training @stratosphereips.bsky.social
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Sebastian Garcia @eldraco.bsky.social · 01/08/2025
𝗢𝗻𝗹𝗶𝗻𝗲, 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻, 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹, intense 𝗮𝗻𝗱 𝗳𝗿𝗲𝗲! CTU's "Introduction to Security" class opens online for free and includes a new professional tier with an EU-recognized certificate! 👉🏻 cybersecurity.bsy.fel.cvut.cz #cybersec #infosec #blueteam #redteam #Training @stratosphereips.bsky.social
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 30/07/2025
𝗢𝗻𝗹𝗶𝗻𝗲, 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻, 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹, 𝗮𝗻𝗱 𝗳𝗿𝗲𝗲! CTU's "Introduction to Security" class opens online for free and includes a new professional tier with an EU-recognized certificate! 👉🏻 cybersecurity.bsy.fel.cvut.cz #cybersec #infosec #blueteam #redteam #Training
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Reposted by Sebastian Garcia
Stratosphere Laboratory @stratosphereips.bsky.social · 15/07/2025
🎥 It’s true — the #Honeynet2025 recordings are live on YouTube! Watch every talk, easily navigable via video chapters. 🔗 One link to find them all: youtu.be/uxbzGcIegVU?...
youtu.be
Honeynet Project Workshop 2025 in Prague
YouTube video by The Honeynet Project
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Sebastian Garcia @eldraco.bsky.social · 07/07/2025
Be careful, in this train you are authorised to dance ska.
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Reposted by Sebastian Garcia
Ron Deibert @rondeibert.bsky.social · 06/06/2025
And here's our original report that kicked all of this off 👇 Paragon marketed itself as the responsible alternative to NSO. But without proper safeguards & oversight, it's not clear any firm canmake such claims when it comes to how govts will abuse their hacking tech citizenlab.ca/2025/03/a-fi...
citizenlab.ca
Virtue or Vice? A First Look at Paragon’s Proliferating Spyware Operations - The Citizen Lab
In our first investigation into Israel-based spyware company, Paragon Solutions, we begin to untangle multiple threads connected to the proliferation of Paragon's mercenary spyware operations across t...
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