plenum πŸ‡ΉπŸ‡³ (@plenumlab) header
plenum πŸ‡ΉπŸ‡³ (@plenumlab) profile picture

plenum πŸ‡ΉπŸ‡³

@plenumlab

I work as a QA and part time bountyhunter. @hackerone @bugcrowd @intigriti Plenum

 France
Joined January 2018
  • Tweets1K
  • Following400
  • Followers3.4K
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Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)Photo by plenum πŸ‡ΉπŸ‡³ (@plenumlab)
I just published Identifying and Exploiting Unsafe Deserialization in Ruby XMLRPC link.medium.com/tc9mOBQlUBb
Identifying and Exploiting Unsafe Deserialization in Ruby

Identifying and Exploiting Unsafe Deserialization in Ruby

Introduction

link.medium.com
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plenum πŸ‡ΉπŸ‡³ retweeted
Volerion (@VolerionSec) profile picture
Volerion
@VolerionSec11 Jun 2025
Launching today! Volerion transforms raw CVEs into structured and instant insights #CVE #CyberSecurity #infosec
Image from Volerion (@VolerionSec)
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Started using bluesky bsky.app/profile/plenumlab.b…
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The new critical content injection, quality over quantity
publiclyDisclosed (@disclosedh1) profile picturepubliclyDisclosed@disclosedh118 Jun 2024
U.S. Dept Of Defense disclosed a bug submitted by ezequielpuig: hackerone.com/reports/218824… #hackerone #bugbounty
Image from publiclyDisclosed (@disclosedh1)
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Are you a hacker ?
Image from plenum πŸ‡ΉπŸ‡³ (@plenumlab)
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I'm buying this one.
Image from plenum πŸ‡ΉπŸ‡³ (@plenumlab)
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CVSS: custom vulnerability scoring system
Joseph Thacker (@rez0__) profile pictureJoseph Thacker
@rez0__8 May 2024
🧠
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A. Why would you hack on VDP's as a researcher ? Making the world a better place B. And for platforms if a company has a security budget of next to zero then why even trying to sell them a bugbounty program.
Critical Thinking - Bug Bounty Podcast (@ctbbpodcast) profile pictureCritical Thinking - Bug Bounty Podcast
@ctbbpodcast28 Apr 2024
Shots fired on the pod last week on whether programs are incentivised NOT to pay.
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Creative CVSS scoring 101, don't read the docs dont follow the rules , freestyle your way into it
publiclyDisclosed (@disclosedh1) profile picturepubliclyDisclosed@disclosedh14 Nov 2023
HackerOne disclosed a bug submitted by @bebiksior: hackerone.com/reports/218052… - Bounty: $2,500 #hackerone #bugbounty
Image from publiclyDisclosed (@disclosedh1)
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0 submissions ranked 17 Efficiency level πŸ’― #1337UP1023 #KnightsOfElectron
Image from plenum πŸ‡ΉπŸ‡³ (@plenumlab)
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plenum πŸ‡ΉπŸ‡³ retweeted
Intigriti (@intigriti) profile picture
Intigriti
@intigriti23 Oct 2023
This is how 100 elite hackers look like after smashing @IntelSecurity's live hacking event with @intigriti. Who would love to attend our next LHE? πŸ™‹β€β™€οΈ
Image from Intigriti (@intigriti)
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Had an amazing time participating in #1337UP1023 in Lisbon Meeting alot of great people, discussing findings sharing insights and learning from other hackers. Thanks @intigriti for another successful LHE, thanks @IntelSecurity for this great opportunity and for the bounties
Intigriti (@intigriti) profile pictureIntigriti
@intigriti21 Oct 2023
Our #KnightsOfElektron live hacking event in πŸ‡΅πŸ‡Ή with @IntelSecurity has concluded! πŸ’― Hackers πŸ’²3⃣0⃣2⃣,8⃣0⃣8⃣ Paid πŸ“ˆ 428 submissions πŸ† MVH + Best bug & team: @arneswinnen & @MattiBijnens πŸ₯‡ 1st leaderboard place: @erbbysam πŸͺ² Most bugs: @p4fg πŸ“– Best PoC: @Karel_Origin Congrats to all participants! πŸ‘πŸ‘πŸ‘ #1337UP1023 #HackWithIntigriti
Image from Intigriti (@intigriti)
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If you are a cybersecurity professional, bugbounty hunter or interested in cybersecurity in general here is the only newsletter you will ever need @securibee buttondown.email/hivefive

Hive Five

Sharing what matters in security. Every week I curate the InfoSec news, so you can focus on securing web apps and earning bug bounties.

buttondown.com
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this wouldn't have been possible without prior research by @wcbowling @lukejahnke @_staaldraad staaldraad.github.io/post/20… elttam.com/blog/ruby-deseria… devcraft.io/2021/01/07/unive…

Universal RCE with Ruby YAML.load

Last year Luke Jahnke wrote an excellent blog post on the elttam blog about finding a universal RCE deserialization gadget chain for Ruby 2.x. In the post he discusses the process of finding and...

staaldraad.github.io
plenum πŸ‡ΉπŸ‡³ (@plenumlab) profile pictureplenum πŸ‡ΉπŸ‡³@plenumlab1 Aug 2023
I just published Identifying and Exploiting Unsafe Deserialization in Ruby XMLRPC link.medium.com/tc9mOBQlUBb
Identifying and Exploiting Unsafe Deserialization in Ruby

Identifying and Exploiting Unsafe Deserialization in Ruby

Introduction

link.medium.com
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Had an amazing time at #1337UP0623. Witnessing experts in action, bright minds working together, and sharing insights was truly inspiring. Grateful for the opportunity to be part of this remarkable event! Thank you to all the @intigriti team working hard to make this possible.
Intigriti (@intigriti) profile pictureIntigriti
@intigriti25 Jun 2023
Unbelievable! Our #1337UP0623 event has finished with €260,000 on the leaderboard. Big congratulations to our award winners: @MattiBijnens (Hacker Hero πŸ₯‡), @honoki, @arneswinnen, @holme_sec & @Karel_Origin!
Image from Intigriti (@intigriti)
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Congrats @MattiBijnens well done
Inti De Ceukelaire (@securinti) profile pictureInti De Ceukelaire@securinti24 Jun 2023
This is how an ethical hacker looks after you tell them that their team just scored €40,000 for a single bug. Amazing work by @MattiBijnens, @arneswinnen and @honoki!
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1337up0623.intigriti.io/
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Just scored a reward @intigriti, check my profile: app.intigriti.com/profile/pl… #HackWithIntigriti
plenum - Intigriti

plenum - Intigriti

Intigriti offers bug bounty and agile penetration testing solutions powered by Europe's #1 leading network of ethical hackers.

app.intigriti.com
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Just scored an exceptional @intigriti, check my profile: app.intigriti.com/profile/pl… #HackWithIntigriti
plenum - Intigriti

plenum - Intigriti

Intigriti offers bug bounty and agile penetration testing solutions powered by Europe's #1 leading network of ethical hackers.

app.intigriti.com
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