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Niklas Heringer - Cybersecurity & Math

Regex

  • An Intro to Regex: The Hacker’s Guide to Pattern Matching

    Posted on 7 mins

    A hands-on, security-minded introduction to regular expressions - from simple matches to character classes, quantifiers, and real-world examples. Learn to wield regex like a precision tool for parsing, filtering, and hacking.
    An Intro to Regex: The Hacker’s Guide to Pattern Matching
  • Intro to File Inclusion

    Posted on 8 mins

    An in-depth and hands-on walkthrough on spotting and exploiting Local File Inclusion (LFI) — from classic payloads to modern bypasses, straight from HTB Academy labs.
    Intro to File Inclusion