PentesterLab's profile picture. We make learning web hacking and security easier. Online systems, code review, videos & courses that can be used to understand, test and exploit bugs!

PentesterLab

@PentesterLab

We make learning web hacking and security easier. Online systems, code review, videos & courses that can be used to understand, test and exploit bugs!

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💥🐹 4 new Go Code Review Labs just dropped! 🐹💥 Read the code, peek at the diff, find the bug. Sharpen your skills: pentesterlab.com/badges/golang-…


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Also black Friday sale at @PentesterLab 👀


We’ve just released the full set of Golang Security Code Review labs! pentesterlab.com/badges/golang-… And if you want to level up for less.. our Black Friday deals are live!!!🔥


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I just completed @Pentesterlab's Serialize Badge!!!


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I just completed @Pentesterlab's White Badge!!!


Added 3 new Java CVEs to our Java Code Review Badge! Now at 64 real-world labs to sharpen your Java code review skills. Try them here: pentesterlab.com/badges/java-co… More CVEs coming soon 👀🔥


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I just completed @Pentesterlab's recon badge!!!


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I just completed @Pentesterlab's Blue Badge!!!


We just published the dates for our four live Web Security Code Review Training cohorts for 2026! Each cohort runs over 4 sessions of 3 hours, packed with deep, practical content to help AppSec engineers and web security researchers level up their code-review skills. Details…


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I just completed @Pentesterlab's HTTP Badge!!!


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DAY 18/365 - After some back and forth with the triager ( who was having issues reproducing ), the IDOR finally got triaged - also wrapped up 25/27 @PentesterLab recon labs ( exercises ).

4osp3l's tweet image. DAY 18/365

- After some back and forth with the triager ( who was having issues reproducing ), the IDOR finally got triaged
- also wrapped up 25/27 @PentesterLab recon labs ( exercises ).

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Purchased @PentesterLab pro; time to level up.

4osp3l's tweet image. Purchased @PentesterLab pro; time to level up.

🚨 New PentesterLab exercise! LaTeX + --shell-escape = RCE 😈 Learn how a simple “generate PDF” feature can let attackers run commands on the server. The LaTeX Shell-Escape challenge is now part of the Media Badge 🎥📝 Try it here: pentesterlab.com/exercises/late…


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Day 12 I just completed @Pentesterlab's Unix Badge!!!

0xSt4rk007's tweet image. Day 12 

I just completed @Pentesterlab's Unix Badge!!!

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I just completed @Pentesterlab's PCAP badge!!!


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