Johannes Krupp

Security Researcher.
CISPA (@Cispa) & Saarland University (@Saar_Uni) alumnus.
Plays CTF with @saarsec.

Thoughts/opinions are my own.

[saarsec @saarsec]

Save the date: #saarCTF 2022 is coming on Friday, May 20, 14 UTC. See https://t.co/YdSMHyeKk9 for details and registration.

[Christian Rossow (@[email protected]) @chrossow]

My research group @CISPA is hiring PhD students and PostDocs! Are you interested in network/software/system security? You'd start in an excellent research environment and enjoy complete academic freedom at ~52-61k EUR annual salary. Details: https://t.co/1YyKAxPhoK -- please RT.

[Johannes Krupp @JohKrupp]

A big thank you to @chrossow for welcoming me to his research group many years ago, @AndreasZeller and Katsunari Yoshioka (YNU) for reviewing my thesis, my colleagues for creating this blinking masterpiece, and everyone else @CISPA I had the pleausure to meet during this journey.

[Johannes Krupp @JohKrupp]

Apparently I have a hat now!

[Christian Rossow (@[email protected]) @chrossow]

Congrats to my student @JohKrupp, who successfully defended his PhD thesis titled `Using Honeypots to Trace Back Amplification DDoS Attacks`! He should be your go-to person for amplification #DDoS attacks. The thesis answers 3 exciting questions (+ one I cannot yet share): 🧵1/3

[Johannes Krupp @JohKrupp]

@lujobauer @chrossow @carmelatroncoso Thank you very much, it's a great honor!
Thanks also to the reviewers and shepherd who helped shaping the paper!

[Lujo Bauer @lujobauer]

Congrats to @JohKrupp and @chrossow for winning a distinguished paper award at #EuroSP21 for BGPeek-a-Boo! w @carmelatroncoso

[Christian Rossow (@[email protected]) @chrossow]

Our BGP-based amplification DDoS traceback idea just received a Distinguished Paper Award from #EuroSP21. Huge congrats to @JohKrupp, and thanks to the positive reviewers and selection committee for promoting this work. We feel honored and grateful! @CISPA @IEEEEUROSP

[Johannes Krupp @JohKrupp]

@Elyx0 Hi, yes, if I recall correctly there actually was one vulnerable contract that had held 5000 Eth for something like 10 minutes in the past.
I guess my accent is too strong, youtube tries to autogenerate german subtitles :(

[Johannes Krupp @JohKrupp]

Giving a talk at @virtualNOG today on our @IEEEEUROSP paper "BGPeek-a-Boo"

[vNOG @virtualNOG]

Heads-up: On April 9th at 18:00 CET Johannes Krupp from @CISPA will talk about their research on »BGPeek-a-Boo: Active BGP-based Traceback for Amplification DDoS Attacks«

https://t.co/HbtBmsMiIh

[saarsec @saarsec]

#saarCTF 2021 is coming to you on May 8th, 13:00 UTC. We have just opened the registration. https://t.co/YdSMHyeKk9 Also new this year: we'll offer cloud hosting! Spread the word (and register, obviously).

[Christian Rossow (@[email protected]) @chrossow]

Our honeypot #AmpPot sees >10k amplification #DDoS attacks per day, some of which cause Tbps attack volume. Which networks are responsible for these (IP-spoofed) attacks? @JohKrupp released our @IEEEEUROSP project which uses #BGP poisoning to trace back spoofing sources. (1/2)

[Johannes Krupp @JohKrupp]

Looking for a fun sunday project? teEther is now open source: https://t.co/ScblrQ3RMf

[RuCTFE @RuCTFE]

RuCTFE 2018 is over!
First place: saarsec
Second place: Bushwhackers
Third place: TowerOfHanoi
Thank you for a good game!
Please, leave us feedback: https://t.co/FaOsQIgYEj
With ❤️ Hackerdom team

[Johannes Krupp @JohKrupp]

Correct link to slides: https://t.co/XiGo2NZ8Ht

[Johannes Krupp @JohKrupp]

Slides and recording of my talk at @USENIXSecurity are now online! Slides: https://t.co/xKWC1PbxXP
Talk: https://t.co/PbNpCPHVSY
#usesec18 #ethereum

[Johannes Krupp @JohKrupp]

Looking forward to presenting our work "teEther: Gnawing at Ethereum to Automatically Exploit Smart Contracts" at @USENIXSecurity #usesec18 #day3