Pieter Ceelen

108 posts

Pieter Ceelen

Pieter Ceelen

@ptrpieter

Red teamer @ Outflank, product owner Cobalt Strike/Outflank Security Tooling

Nederland Katılım Mart 2018
146 Takip Edilen1.8K Takipçiler
Pieter Ceelen retweetledi
Cobalt Strike
Cobalt Strike@_CobaltStrike·
With Cobalt Strike's new REST API, bold experimentation isn't just allowed, it's encouraged! Our latest blog provides a few examples to help inspire users to explore the way that #CobaltStrike and the generative AI ecosystem can be intertwined. cobaltstrike.com/blog/me-myself…
Cobalt Strike tweet media
English
1
9
20
2.1K
Pieter Ceelen retweetledi
Cobalt Strike
Cobalt Strike@_CobaltStrike·
One week after launch, we can finally REST! In our latest writeup, dive into the architecture of the REST API, get a walk-through, and learn about the features, including interacting with Python. ow.ly/ae6V50XA7Bs
Cobalt Strike tweet media
English
1
3
20
6.8K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
@_CobaltStrike Very happy to have the release out, proud of the team and result 💪. Provides something fun and exciting to tinker with for thanksgiving 🦃
English
1
0
5
761
Pieter Ceelen retweetledi
Cobalt Strike
Cobalt Strike@_CobaltStrike·
Cobalt Strike 4.12 is LIVE, complete with a new look for the GUI! Additionally, we're introducing: - A REST API - User Defined Command and Control (UDC2) - New process injection options - New UAC bypasses - and more! Check out the release blog for details. ow.ly/RSmE50Xx1OS
Cobalt Strike tweet media
English
4
29
94
45.3K
Pieter Ceelen retweetledi
Outflank
Outflank@OutflankNL·
20th OST release this year! Highlights of 2025 so far:
 -Hiding malware in secure enclaves -New file formats for code exec, lateral and persistence -Post-exploit tooling for Chromium -Async BOFs & BOF-PE support -Lots of evasion and tradecraft additions … And much more to come!
GIF
English
0
7
16
1K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
This one will be fun! We’ll show how you can integrate LLMs in various stages of red teaming via various hands-on assignments and practical examples. Hope to learn a bit myself as well 😊
Cobalt Strike@_CobaltStrike

Go beyond superficial usage of #LLMs and #AI in this free training from Cobalt Strike and Outflank experts. Gain practical experience to architect AI-powered attack chains and navigate AI assisted adversary simulation. Register now! ow.ly/V5sC50X73i2

English
0
0
6
634
Pieter Ceelen retweetledi
Cobalt Strike
Cobalt Strike@_CobaltStrike·
Curious about Cobalt Strike? Well sharpen your digital pencils, as class is now in session with a brand new training course created by experts from Cobalt Strike and @_RastaMouse from @_ZeroPointSec, complete with guided labs! ow.ly/e5og50X1GP0
Cobalt Strike tweet media
English
5
33
135
13.7K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
Just packed my 🧳for #BHUSA. Besides attending talks and hanging out there, doing a mini-talk at the Fortra Booth. I’ll show we hook LLM/AI into Cobalt Strike (CS 4.12 preview🫣); besides this lots of other content from @OutflankNL and @_CobaltStrike at Booth #4422
Pieter Ceelen tweet media
English
1
7
19
7.1K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
I should be recognizable with a red @OutflankNL shirt and a @_CobaltStrike cap. It will be 🌞 and 🥵, so got a couple of Cobalt Strike caps 🧢 for give away!
English
0
0
2
231
Pieter Ceelen
Pieter Ceelen@ptrpieter·
I'm heading to #TROOPERS25 together with @HenriNurmi. Looking forward to great content and meeting people in person! Feel free to chat with us about Cobalt Strike, Outflank Security Tooling, roadmaps etc
English
1
5
11
2.9K
Pieter Ceelen retweetledi
Cobalt Strike
Cobalt Strike@_CobaltStrike·
Cobalt Strike 4.11 is out now! This release introduces a novel Sleepmask, a novel process injection technique, a new prepend reflective loader with new evasive options, asynchronous BOFs, DNS over HTTPs and more! cobaltstrike.com/blog/cobalt-st…
Cobalt Strike tweet media
English
4
107
538
48.5K
Pieter Ceelen retweetledi
Outflank
Outflank@OutflankNL·
Virtual fortresses aren’t as invincible as they seem 🏰⚔️. Read about our latest research on using Secure Enclaves in Windows for offensive ops — plus fresh insights for red teamers. Check out Part 1 of our blog series here: outflank.nl/blog/2025/02/0…
GIF
English
2
42
86
10.8K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
@sadpanda_sec It’s a rare item, those are exclusive for the Cobalt Strike R&D crew
English
1
0
0
180
SadPanda
SadPanda@sadpanda_sec·
@ptrpieter How do I get one of those hoodies 👀
English
1
0
1
208
Pieter Ceelen
Pieter Ceelen@ptrpieter·
Just hammered out Cobalt Strike roadmap, it will be yummy
Pieter Ceelen tweet media
English
4
2
45
4.7K
Pieter Ceelen
Pieter Ceelen@ptrpieter·
@shDaniell Luckily was jam and whipped cream. salami combined with whipped cream honestly 🤢…
English
0
0
1
146

Keşfet

@_CobaltStrike @_RastaMouse @_ZeroPointSec @OutflankNL @HenriNurmi @sadpanda_sec @elonmusk @BarackObama