The law itself
What is the DMCA?
The Digital Millennium Copyright Act is a United States federal law from 1998. Two parts of it matter to almost everyone who runs into the name: the one that gets your material taken offline, and the one that makes it illegal to break a digital lock. They are separate, and people mix them up constantly.
Where it came from
Congress passed it in October 1998, to bring US law into line with two treaties signed at the World Intellectual Property Organization two years earlier. The internet of 1998 was dial-up, and the drafting shows: the statute talks about bulletin boards, caching and "information location tools", and it assumes the interesting question is whether a service provider can be sued for what its users upload.
That question got a deal instead of an answer. Providers got immunity from their users' infringement, and in exchange they agreed to act fast whenever a rights holder complained. That trade is why the modern takedown exists, and why it works the way it does: fast, one-sided, and decided by nobody.
What is actually inside it
The act has five titles. Two of them come up in ordinary life.
| Title | What it did | Meets you as |
|---|---|---|
| Title I | Implemented the WIPO treaties. Created § 1201 (circumventing access controls) and § 1202 (stripping copyright information from a file). | Jailbreaking, DRM, repair, region locks |
| Title II | The Online Copyright Infringement Liability Limitation Act, which added § 512 and its safe harbours. | Takedown notices and counter-notices |
| Title III | A narrow exception letting a repair technician copy software to fix a machine. | Rarely |
| Title IV | Assorted provisions, including for libraries and webcasting. | Rarely |
| Title V | Design protection for boat hulls. Genuinely. | Never |
When somebody says "I got a DMCA", they mean Title II. When somebody says "the DMCA is why I can't fix my own tractor", they mean Title I. Both are correct, which is a large part of the confusion around the name.
The four safe harbours
Section 512 doesn't create one shelter, it creates four, each for a different kind of service. Which one applies changes what the provider owes you.
- § 512(a): passing traffic through. Your internet provider, moving packets. It has the strongest protection and no takedown obligation, because it isn't storing anything. This is why an ISP forwards you a warning letter instead of deleting a file.
- § 512(b): caching. Temporary copies kept to make the network faster.
- § 512(c): storage at a user's direction. The big one. YouTube, Etsy, Shopify, Instagram, your web host, any forum. This is the harbour that requires a registered agent and the notice-and-takedown routine.
- § 512(d): information location tools. Search engines and directories. It is why you can ask Google to delist a page it doesn't host.
Every harbour comes with conditions. The provider must not know about the infringement, must not profit directly from it while able to control it, must act quickly once notified, and, under § 512(i), must have a policy for terminating repeat infringers and actually apply it. That last condition is the one that has cost providers dearly in court, and it is the reason platforms count strikes against your account rather than just removing files.
The other half: Section 1201
Title I made it unlawful to circumvent a technological measure that controls access to a copyrighted work, and to distribute tools for doing so. It applies whether or not any copyright infringement follows. Breaking the lock is itself the offence.
This is the provision that put security researchers, repair shops and accessibility projects in an awkward position for two decades, and it is what the campaign behind this domain was about in 2001. There is a relief valve: every three years the Librarian of Congress runs a rulemaking and grants temporary exemptions for things like repairing devices you own, preserving abandoned video games, or making a work readable by a screen reader. The exemptions expire and have to be argued for again each cycle.
Why it matters here
A Section 1201 problem has no takedown, no counter-notice and no 14-day clock. If your situation is about a lock rather than a copy, none of the procedure on this site applies to it, and the stakes are considerably higher.