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Niklas Heringer - Cybersecurity & Math

Web Security

  • A Small Prep Session: PortSwigger Beginner Labs

    Posted on 3 mins

    A short and focused session working through some beginner-level labs from PortSwigger, revisiting the fundamentals of web vulnerabilities like XSS, SQLi, and authentication bypasses.
    A Small Prep Session: PortSwigger Beginner Labs
  • Interview Prep Series: Part Two – Technical Deep Dive & Groundwork

    Posted on 20 mins

    Digging into technical fundamentals and real interview questions to sharpen my baseline as a pentester. Inspired by Steflan Security’s interview cheat sheet & my 2nd Cirosec Interview
    Interview Prep Series: Part Two – Technical Deep Dive & Groundwork
  • SQLi Hands-On: Injecting Chaos

    Posted on 10 mins

    A practical deep dive into SQL Injection in DVWA — from simple payloads to reading and writing files, fuzzing with ffuf, and scripting attacks in Burp Suite.
    SQLi Hands-On: Injecting Chaos