Lennaert89's Avatar

Lennaert89

@lennaert89.bsky.social

Interested in infosec / hacking / osint / dfir / bugbounty! Formerly Zerocopter.com, currently Head of Triage at Intigriti.com Head CSIRT over at divd.nl Hacknotcrime Advocate Aut viam inveniam aut faciam.

791 Followers  |  280 Following  |  23 Posts  |  Joined: 07.07.2023  |  1.5532

Latest posts by lennaert89.bsky.social on Bluesky

Post image 30.05.2025 14:47 โ€” ๐Ÿ‘ 104    ๐Ÿ” 24    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
Community sponsor announcement with BSides Leeds and Damn Good Security logos

Community sponsor announcement with BSides Leeds and Damn Good Security logos

โšซ Sponsor Announcement โ€” Welcome Damn Good Security! โšซ

Weโ€™re excited to welcome Damn Good Security as a Community Sponsor for BSides Leeds 2025!

Events like ours wouldn't be possible without the support of incredible sponsors โ€” massive thank you to the DGS team!

27.05.2025 14:01 โ€” ๐Ÿ‘ 3    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Ready to kick off @1ns0mn1h4ck.bsky.social day 2! Hit me up if you want to connect and chat #bugbounty, send a message or find me in my @intigriti.com hoodie. Got some cool stickers to hand out!

14.03.2025 08:01 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Attending the amazing @1ns0mn1h4ck.bsky.social to represent @intigriti.com today!

Hit me up if you want to chat. I've got stickers and invite codes to hand out ๐Ÿ˜‰.

13.03.2025 10:27 โ€” ๐Ÿ‘ 6    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Tickets for next yearโ€™s Dutch hacker camp are on sale! ๐Ÿค‘

I went to all of the camps (HAL, WTH, HAR, OHM, SHA, MCH and WHY) since 2001 and donโ€™t plan to stop โ›บ๏ธ

06.12.2024 07:38 โ€” ๐Ÿ‘ 8    ๐Ÿ” 5    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Nice

02.12.2024 19:06 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Old HITB and current OrangeCon crew FTW!

27.11.2024 21:36 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
OrangeCon

I want to do a little promotion here as well:

For the dutch people following me: last year me and 2 other folks from HITB dutch crew started orangecon.nl.

Its a nonprofit which focusses on knowledge sharing with affordable trainings followed by a very affordable conference. Do check it out please!

27.11.2024 17:53 โ€” ๐Ÿ‘ 8    ๐Ÿ” 6    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

I enjoyed it, though the ending was a bit weird. Had fun shooting at things overall.

27.11.2024 16:45 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Congrats!

26.11.2024 23:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Same

26.11.2024 23:47 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Haha I have presentations about this too. Has a beautiful iceberg image about red teaming in it as well iirc

26.11.2024 22:02 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Donโ€™t think itโ€™s a bad idea at all, just donโ€™t sell it as something incredibly advanced, or as the replacement of a skilled human manual testing things. Or sell it as anything else that itโ€™s not for that matter.

26.11.2024 21:56 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Yes I will call it the threaty threat automated continuous security solution powered by AI.

What it actually is:
We run Nessus once a week and use chatGPT to generate reports from the scan results.

26.11.2024 21:49 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Now make it AI powered and double that again ..

26.11.2024 21:46 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Preview
CVE-2024-8856 - Unauthenticated RCE via Arbitrary File Upload Hacked.be | Cybersecurity blog by Rein Daelman.

CVE-2024-8856 is out! This is my 7th CVE, but my first critical one.

TL;DR

Unauthenticated RCE via Arbitrary File Upload (thanks to some very questionable file type validation).

Already posted on X, but wanted something on my profile... ๐Ÿ˜…

#BugBounty #Security

Write-up:
hacked.be/posts/CVE-20...

24.11.2024 14:49 โ€” ๐Ÿ‘ 10    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Yes but if you call it that you canโ€™t charge the same.

26.11.2024 21:15 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Had fun finishing the black ops 6 campaign this weekend!

25.11.2024 00:14 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

It sounds like this would finally fix my back to be honest

24.11.2024 09:50 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Itโ€™s on!

22.11.2024 20:35 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Pff itโ€™s far too early to be on a train

19.11.2024 06:23 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Mornin!

19.11.2024 06:23 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Love seeing this place get more active, Iโ€™ll try to to share a bit more on here

17.11.2024 18:57 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

OMG hax0r

15.11.2024 16:44 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

So anyone on here talking about #bugbounty?

22.09.2023 15:25 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Wait you onlyDans lot now also have representation in my home town :O

16.07.2023 21:27 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Welcome!

11.07.2023 22:06 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Pff what a day :(

10.07.2023 21:47 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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