Teacher , HackTheBox Ambassador. I run the Dutch Hack The Box meetup. I created @AdventOfCtf. My views are my own. OSCP | OSWE.
Almere, Nederland
Joined August 2007
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Every year the AoC is great fun. A small donation goes a long way...
Sponsorship for #AdventOfCode 2022 is now open! If you think your organization might be interested, please email sponsorship at [the Advent of Code domain name] for more information! 🎄🌟🎅
Λrjen retweeted
Sponsorship for #AdventOfCode 2022 is now open! If you think your organization might be interested, please email sponsorship at [the Advent of Code domain name] for more information! 🎄🌟🎅
Λrjen retweeted
As an NLJUG member, you're probably working on something awesome. Don't hesitate to take pride in what you do and submit your project for the NLJUG Innovation Award 2022! buff.ly/3SsvlKH
#Java #JVM #jfall2022 #nljug #InnovationAwards
Want to learn some clojure in a fun and exciting way? Try some zombies!
Thanks for following this twitter account for seven years since the last season of Parens of the Dead. Your impressive patience has paid off. It's time for a new season! Yay! 😄☀️ parens-of-the-dead.com
We will pick it up in december :)
We’ve managed to keep out Covid for two years, but finally it’s in the house! While I’m technically neg. I sadly had to cancel my “Rabbit Hole” talk for HTB NL chapter. Sucks! But I wouldn’t want to be responsible for passing on thát torch. #hackthebox @credmp
Λrjen retweeted
We’ve managed to keep out Covid for two years, but finally it’s in the house! While I’m technically neg. I sadly had to cancel my “Rabbit Hole” talk for HTB NL chapter. Sucks! But I wouldn’t want to be responsible for passing on thát torch. #hackthebox @credmp
Λrjen retweeted
. @Wietze rocking it on stage and launching hijacklibs.net/, a community-driven project that maintains a repository of binaries vulnerable to variety of different DLL hijacks 🔥
TIL that outlook wil visit one-time activation links when you open your email. Spent quite some time debugging the broken functionality only to find out #microsoft is doing it for you.... do other mail providers also do this? #java #dev
The next official dutch #hackthebox meetup will be in-person again. Act quick to claim your spot, when it is full, please join the waitlist as spots always open up lateron. @hackthebox_eu @NOVIhogeschool #hacking
I just announced the juli meetup! A in-person @hackthebox_eu meetup in Utrecht. We take care of food, drinks and a talk/workshop. You bring your hacking skills and humor. Hosted by @NOVIhogeschool meetup.com/hack-the-box-nl/e…
We hosted a small(ish) CTF at our location, together with @SANSInstitute and @NsecResilience. The students had a great time and after 2 days all the challenges were completed :D. As usual we have a little after video, you can spot me rocking the @hackthebox_eu hoodie as always!
Λrjen retweeted
Guess who's back, back again 👀
The only global #CTF specifically designed for corporate #cybersecurity teams is reloaded and better than ever!
Get your team ready and follow the money 💰
bit.ly/3MvfUO8
#HackTheBox #HTBBusiness #CaptureTheFlag #BusinessCTF22
Just sent out the update for the next meetup on May 18th! We will be hosting another box walkthrough! Still time to register here: meetu.ps/e/L1Qs3/yt8Pp/i @hackthebox_eu #hacking @NOVIhogeschool
Check out the after movie for our 2 year anniversary party @hackthebox_eu #hacking #party #pizza @RoadRunnerHacks The next meetup is on May 18th!
Started playing @ELDENRING , funny thing is that it runs better on Linux then it does on Windows... in all my years using Linux I never thought I would say that... #win
Registration is open for our next @hackthebox_eu meetup! March 16th Salp will be presenting a reverse engineering workshop! meetu.ps/e/KRr9s/yt8Pp/i
A small reminder that on Feb 16th we will be hosting a great workshop/session on #xss with @PinkDraconian !
This month our meetup will feature the awesome @PinkDraconian ! Plenty of digital seats available: meetu.ps/e/KLhbc/yt8Pp/i #doyouevenxss?
This month our meetup will feature the awesome @PinkDraconian ! Plenty of digital seats available: meetu.ps/e/KLhbc/yt8Pp/i #doyouevenxss?
So humbled that our dutch @hackthebox_eu meetup reached 1000 members just before the 2 year mark! Want to join out next meetup this Wednsday? Join here: meetup.com/hack-the-box-nl/