Lighthouse
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  • Knowledge Base

Knowledge Base

Guides on combatting CSAM on platforms — from legal obligations and detection methods to implementation.

Getting Started

What CSAM is, why it matters, and what platforms are legally required to do.

Hash Matching

How PhotoDNA, MD5, and SHA-1 hashing work to identify known CSAM without viewing content.

Reporting to NCMEC

How CyberTipline reports work, what metadata is required, and how to stay compliant.

Legal Obligations

Federal reporting requirements, liability considerations, and compliance timelines for platforms.

Building a Detection Pipeline

Practical guidance on integrating CSAM scanning into your upload and moderation workflows.

Integrating Lighthouse

SDK and REST API reference for platforms using Lighthouse for hash-matching and reporting.

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