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Remember LFI

Full name: Local File Inclusion

Memory aid: Local Files are Included where they should not be.

File inclusion and arbitrary file read are related but distinct behaviors.

Study area: Threats & application security · Batch 3

Relevant study for: CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline · CompTIA CySA+ · CompTIA PenTest+

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Cybersecurity & Identity / Knowledge library

LFI — Local File Inclusion

Includes unintended local files through an application flaw.

Acronym study batch 3 · reviewed 2026-10-20

Why learn LFI — Local File Inclusion?

Includes unintended local files through an application flaw.

Where it came from

File inclusion and arbitrary file read are related but distinct behaviors.

Build your understanding

Work through these exercises in order. Try the task before opening a reference.

  1. Without looking, expand LFI: Local File Inclusion.
  2. Recall this memory aid: Local Files are Included where they should not be.
  3. Explain the practical use: Includes unintended local files through an application flaw.
  4. Explain this distinction: File inclusion and arbitrary file read are related but distinct behaviors.
  5. Identify LFI in a device specification, architecture diagram, or system inventory.

Documentation and sources

Catalog source: technology-maxxing. This page reproduces the existing catalog’s learning material and source links.