About Me

My name is Nemesis Contreras. I’m currently a Senior Application Security Engineer at Rula.

I like to build and break things.

Things I Enjoy Discussing

• Bug bounty programs
• Good software engineering and security engineering
• My favorite work playlist for the past 3 years: the soundtrack from Breath of the Wild
• Microcontrollers and embedded systems

Interesting Things I’ve Done

• Write up RCE proof of concept for CVE-2025-55182 and CVE-2025-66478 (React2Shell vulnerability) - check out my writeup
• Worked on the triage team for Bugcrowd, where I triaged thousands of bug bounty reports for Fortune 500 companies’ bug bounty programs
• Featured on Null Byte (White Hat Hacking) to write a publication about directory traversal vulnerabilities
• Had my Discord server acquired by HackerOne and it’s now their official Discord server
• My hardware tutorials on Instructables have over 550,547 views and have earned a bronze medal