
Follow for #infosec #hacking #osint #dfir #bugbounty! | Head Triage @intigriti | ex. @zerocopter | Also do things at @divdnl @hacknotcrime @OrangeCon_nl
Amsterdam
Joined September 2009
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Lennaert retweeted
Are you joining us at WICCON? 💜
Come meet our team and say hi! We're super stoked to be the Silver Sponsor for this year's WICCON event!
📅 October 29–30
📍 Haarlem, the Netherlands
Catch the Intigriti team there, we’d love to meet you! ✨️
#WICCON #WomenInCybersecurity #CyberCommunity #InfoSec #Intigriti
Lennaert retweeted
The call for trainers for OrangeCon 2027 is LIVE!
Got an in-depth cybersecurity training to share? We’re looking for both offensive and defensive topics, & the weird, wonderful stuff that doesn’t fit in a box!
Submit your training here:
forms.gle/SomVqqhhrYmaaHxWA
Lennaert retweeted
I can’t help chuckling when I notice websites putting their robots.txt behind a CAPTCHA
Lennaert retweeted
We’re live at Hack Glasgow! 🤠
Come pass by to meet our team, collect cool swag & play our CTF! 😎
With a great welcome openings talk we’ve started!
If you’re visiting @Hack_Glasgow come see me at the Intigriti booth and grab some swag!
Arrived in Glasgow, for @Hack_Glasgow!
Looking forward to the event and all the friends to see.
Lennaert retweeted
We're thrilled that @intigriti is a Gold sponsor for Hack Glasgow 2026!
Intigriti specialise in crowdsourced security solutions, empowering talented researchers to find vulnerabilities and direct their discoveries to the right people, and supporting organisations [...]
Something pretty cool is brewing 👀
I've always loved building out recon pipelines and finding forgotten assets, and now we're doing something with that!
In our latest blog, our Head of Product explores why security teams can miss what threat actors see, and how insights can help organizations prioritize the vulnerabilities that pose the greatest real-world risk.
“Threat actors don’t behave like scanners. They don’t enumerate for completeness. They explore for advantage. When your visibility is built around scan coverage and confirmed outcomes, you can miss earlier signals” - Greg Jenkins
Read the full article here.
intigriti.com/blog/business-…
#AttackSurfaceManagement #ThreatExposureManagement #EthicalHacking
Lennaert retweeted
In our latest blog, our Head of Product explores why security teams can miss what threat actors see, and how insights can help organizations prioritize the vulnerabilities that pose the greatest real-world risk.
“Threat actors don’t behave like scanners. They don’t enumerate for completeness. They explore for advantage. When your visibility is built around scan coverage and confirmed outcomes, you can miss earlier signals” - Greg Jenkins
Read the full article here.
intigriti.com/blog/business-…
#AttackSurfaceManagement #ThreatExposureManagement #EthicalHacking
Lennaert retweeted
We're thrilled that @intigriti is a Gold sponsor for Hack Glasgow 2026!
Intigriti specialise in crowdsourced security solutions, empowering talented researchers to find vulnerabilities and direct their discoveries to the right people, and supporting organisations [...]
Lennaert retweeted
Going to Vegas? So are we, and we’re bringing a packed week of hacking, games, prizes, swag, and community chaos with us. 🐜 🎰
Here’s where you can catch Intigriti:
📍 Aug 3–5: BSides Las Vegas
We’re teaming up with PortSwigger, swing by their booth, take on our AI game, and grab your chance to win some fun prizes.
📍 Aug 5–6: Black Hat USA
Find the Intigriti team at PortSwigger’s booth 5342 and see if you can spot the bug. Whisper the password BountySecured to win a limited-edition Intigriti Nike hat. 👀
🎲 Aug 4: PWN THE POT
Our casino night is almost full, register now for one of the final spots. Win chips, play big, and use your winnings to bid on real prizes, from a Nintendo Switch 2 to LEGO sets and more.
Deal Me In > luma.com/pwn_the_pot?utm_sou…
🍺 Aug 5: Vulnerability + Vibes
Intigriti is bringing the vibes, swing by our stall to meet the team, grab some exclusive swag, and chat all things hacking and community.
Sign me up > luma.com/ggwe77j9?utm_source…
🎮 Aug 7: Hackers Unplugged
Join the Intigriti team for a game night at Play Playground. Register now and hop on our mini bus for a night of games, drinks, food, and good vibes, all on us.
I’m Game > luma.com/hackersunplugged?ut…
🐞 Aug 7–9: DEF CON
We’re proud platinum sponsors of the Bug Bounty Village. Come grab your challenge coin, pick up exclusive Intigriti swag, and say hi to the team.
From community hangs to hacker challenges, we’re bringing the energy all week long.
See you in Vegas. 👀
Lennaert retweeted
A friendly reminder: OrangeCon 2027 will take place on June 25th.
And of course, the training days are part of the experience too so stay tuned for more details... In the meantime, check out the recordings from our past conferences on our YT channel!
buff.ly/VmFoA8x
I co-authored an educational article on cache poisoning vulnerabilities with @intigriti.
If you're looking to understand the fundamentals and pick up a few practical tips along the way, give it a read!
Most hunters skip web cache poisoning because it looks intimidating... 😓
But a single misconfigured cache layer can regularly turn into critical findings, even on heavily tested targets! 🤠
In our latest article, we walk you through identifying cache layers, spotting unkeyed inputs, and chaining them into real impact! 😎
This time, we teamed up with Zhero (@zhero___) who is well-known for his research around cache poisoning vulnerabilities! 💪
Read the article now!👇
intigriti.com/researchers/bl…
Lennaert retweeted
Proud to be Silver Sponsors of WICCON 2026 in Haarlem, the Netherlands (28–30 Oct)! 🤠
We’re excited to support a community-driven event that brings together security folks to share, learn, and connect. If you’re attending, come say hi, we’d love to meet you! 👋
#WICCON #CyberSecurity #InfoSec #BugBounty #Community #Intigriti
Lennaert retweeted
Ready for our next speaker announcement? We're delighted that Vi is coming to Hack Glasgow to present 'Six Years of IPv6'!
After six years of PhD research into IPv6 scanning, Vi will be talking through some of the interesting findings and highlights, including [...]
Lennaert retweeted
Had a sit down with MSRC, while I can't say full details we had a constructive discussion on the state of things aimed at the following (and remember I'm just the messenger):
MSRC handling vulnerability submissions and researcher communication
GitHub removal of cybersecurity repros and the pivotal need for safe harbor for TTPs and 0days
I won't be commenting on the recent 0day releases being dropped by a certain researcher because that is a unique case.
I will be discussing the other topics tho:
While GitHub is owned by Microsoft they are still acting independently, I was assured that the removal of researcher GitHub accounts and code was NOT being authorized or done by MSRC. They fully understand the need for 0days and code to be available for testing and cybersecurity defenses is as important as it is for offensive needs, they don't not want code to be fragmented and us going back to the days of milw0rm. MSRC is going to look into these, and I conveyed the need to do this since other places like YouTube and twitch are also cracking down on cybersecurity accounts.
The email between MSRC and researchers discussing 0day talks at BH / Defcon and asking them to report what they are talking about is another topic I discussed. This was actually for Microsoft to help coordinate mitigations and tech review the talks that were in their pipeline (btw they have sent this email or it's equivalent for years, it's not new). We discussed ideas to improve these emails and how things could be misinterpreted from both sides.
I think MSRC has their work cut out for themselves, but I can say that there are still lots of very passionate researchers there still trying to do good things. And I'm very thankful for them taking the time to sit down with me.
I've always been lucky with MSRC interactions, and if you aren't and need a line thru to them for legitimate reasons, let me know, I'm happy to meditate when it is necessary.






















