Joined March 2016
- Tweets 1,493
- Following 130
- Followers 1,923
- Likes 2,514
48 Photos and videos
Karel Origin retweeted
11 Jun 2025
Launching today!
Volerion transforms raw CVEs into structured and instant insights
#CVE #CyberSecurity #infosec
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14 Feb 2024
Found myself in a scenario where I had to query a rate-limited API.
The sleep command works but will waste a lot of time, as it cannot take into account the time passed since the call originally started. Couldn't find anything existing, so I created:
github.com/karelorigin/limit…
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Karel Origin retweeted
1 Aug 2023
I just published Identifying and Exploiting Unsafe Deserialization in Ruby XMLRPC link.medium.com/tc9mOBQlUBb
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Karel Origin retweeted
6 Jan 2023
You have command injection in a GitHub Actions workflow. Now what?
Read my blogpost on leaking secrets from GitHub Actions workflows:
karimrahal.com/2023/01/05/gi…
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3 Oct 2022
Okay, who's going to be the first to find an IDOR in Twitter's Edit Tweet functionality?
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In yesterday's @CoreRuleSet release several critical issues are getting fixed which I and other hackers reported during #1337up0522. The most interesting bug affecting broader number of WAFs is yet to be released so stay tuned!👾👾
coreruleset.org/20220919/crs…
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28 Aug 2022
Had a lot of fun this event with @intigriti and @TheParanoids! Meeting the hackers and Yahoo/Intigriti people was a real pleasure :) #1337up0822
27 Aug 2022
🚥 Get ready, set, go! 🏎️💨
Time for these top hackers to relax and watch some top racers!
#1337up0822 @TheParanoids @intigriti
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25 May 2022
All good things come to an end, even 1337up0522. Never thought that I would finish in 2nd place. Super grateful for the Most Valuable Hacker award. Thanks a lot @intigriti!
Hope I get to do this again sometime! :)
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.@Karel_Origin, @kapytein and I won the most advanced hack prize and second price for the hackademic award 🥳 was a fun day and I'm looking forward to next year IRL
27 Sep 2021
We're thrilled to announce the winners of #HTH21:
1st Most Creative Hack: Bazen
1st Most Impactful Hack: Omegapoint--Göteborg
1st Most Advanced Hack: {{hubs.li/H0YcmsJ0}}
1st Hâckademic Award: FlosSecurity
#HTH21 | @GemeenteDenHaag | @cybersprintnl | @zerocopter
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Karel Origin retweeted
8 Mar 2021
Introducing: Wingman
Wingman is an XSS scanner designed for bug bounty hunters, infosec professionals, and hobbyists.
Read more:
xsswingman.com/blog/posts/an…
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31 Dec 2020
Read all about our investigation on the HouseParty hack! 👇
31 Dec 2020
I couldn't bear the thought of going a full year without publishing a blog post on my website. So to end 2020, @KarimPwnz, @Karel_Origin, and I have published our investigation into the Houseparty hack: "The Story of the Million Dollar Bounty" — edoverflow.com/2020/housepar…
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6 Oct 2020
BOOM! This is it. The "BOOM" that started it all, or as @securinti likes to call it: The big BOOM.
6 years ago: hackerone.com/reports/16392
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24 Sep 2020
Pain is what you experience when you have a decent amount of followers but 0 likes on your latest tweet :P
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18 Sep 2020
I knew it
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8 Jul 2020
It really amazes me how many straightforward path traversal vulnerabilities exist, multiple (recent) popular CVEs are based on this exact bug.
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