Prevent your educational content from being shared online.

Protect your lecture videos, course materials, PDFs, and digital textbooks from unlawful redistribution. Trace leaks to their source, anywhere online.

Contact Custos for Document and PDF Security Software - Custos Media Technologies

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Key Benefits

  • Directly integrated into Moodle.

    Custos’ Moodle plugin lets you share educational content with students anywhere in the world, knowing that you’re protected from unlawful redistribution.

  • Detect leaks anywhere online.

    If content is leaked online, Custos’ patented blockchain-based tracking technology rapidly detects the breach, stretching as far as the dark web.

  • Identify leakers.

    Once a leak is detected, Custos’ tracking system reveals the identity of the student whose copy was leaked.

Use cases


A top-400 research university is deploying Custos for Moodle, to protect their course PDFs from being pirated by students online.

E-book distributor

Erudition Digital, a UK-based e-book distributor, uses Custos to host, market, and secure books and textbooks. See press release.


Document and PDF security - a curated list of resources by Custos Media Technologies

Enterprise Document and PDF Security — Resources


Can ebook piracy be prevented (or even just managed)?


This blockchain-based solution could mean the end of ebook piracy forever

Get to know the patented technology that powers Custos.

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