The short answer
The Digital Millennium Copyright Act was signed into US law on 28 October 1998. It implemented two 1996 WIPO treaties on copyright in the digital age. Two of its provisions matter most today:
- Section 1201 makes it unlawful to break technical protection on copyrighted works (DRM, encryption, access controls) or to traffic in tools built to do so. The Librarian of Congress reviews exemptions every three years.
- Section 512 gives online services “safe harbours” from liability for their users' infringement, if they follow a notice-and-takedown process. Almost everything people mean by “a DMCA” comes from this section.
So when someone says a page “got DMCA'd”, they mean a copyright owner sent a notice under section 512 and the recipient — a host, a platform or Google — acted on it.
The safe harbours
Section 512 covers four kinds of service:
| Section | Covers | Typical example |
|---|---|---|
| 512(a) | Transitory communications | Internet access providers carrying traffic |
| 512(b) | System caching | Caching proxies |
| 512(c) | Material stored at a user's direction | Hosts, video platforms, forums, marketplaces |
| 512(d) | Information location tools | Search engines and link directories — Google Search |
The protection is conditional. A service must not know about the infringement (or ignore obvious signs of it). It must remove material promptly once properly notified, and it must have a policy for terminating repeat infringers. Hosts must also register a designated agent with the US Copyright Office. Those conditions explain how platforms behave: acting fast on a notice is how they keep their own protection. Investigating each claim properly is not required.
How notice-and-takedown works
- The notice. The copyright owner, or an agent acting for them, sends a written notice identifying the work, the infringing material and where it is, with a good-faith statement and a statement under penalty of perjury that they are authorised to act. What a notice must contain.
- Removal. The service removes or disables access to the material, or for a search engine, delists the URL.
- The counter-notice. The person who posted it can respond with a sworn counter-notice. Unless the claimant files a lawsuit, the material can be restored 10 to 14 business days later. How counter-notices work.
- Liability for false claims. Section 512(f) makes knowingly false notices actionable, and a 2015 appeals ruling (Lenz v. Universal) held that senders must consider fair use before filing. In practice, enforcement is rare. Spotting abusive takedowns.
How the DMCA shapes Google Search
Google Search is a 512(d) information location tool. Its copyright removal process for Search is built around DMCA-style notices: a rights holder identifies URLs, Google reviews the request, and accepted URLs are delisted. Two things set Google apart from most recipients:
- It publishes the requests. Each request, with the reporting organisation, copyright owner and the domains it names, goes into Google's Transparency Report. Notices are usually archived on Lumen too.
- It doesn't tell the website. Google usually has no way to contact the site owner, so most sites never hear that a request named them. That gap is why a DMCA check exists.
Outside the US
The DMCA is US law, but most countries have something similar. In the UK, hosts are protected under the Electronic Commerce (EC Directive) Regulations 2002 if they act promptly once they know of unlawful material. In the EU, the Digital Services Act sets notice-and-action rules for online platforms. Because so many hosts, platforms and search engines are US companies or follow US practice, “DMCA notice” has become the everyday term for a copyright takedown wherever the sender is.
FAQs
What does DMCA stand for?
Digital Millennium Copyright Act, a US federal law signed on 28 October 1998.
What is a DMCA safe harbour?
A protection in section 512 of the DMCA that shields online services from liability for their users' infringement, if they meet conditions such as removing material promptly when notified and terminating repeat infringers.
Does the DMCA apply outside the United States?
It is US law, but many non-US sites use US hosts, platforms and search engines that follow it. Other countries have their own equivalents, such as the UK's Electronic Commerce Regulations 2002 and the EU's Digital Services Act.
What happens if someone sends a false DMCA notice?
Section 512(f) makes knowingly false notices actionable, and senders must consider fair use before filing. In practice these cases are rare and expensive, so a counter-notice is the usual response.
How do I know if a DMCA notice named my website?
Notices sent to Google Search are published in its Transparency Report. Run a DMCA check to see which requests name your domain, who filed them and which URLs they listed.
Keep reading
What is a DMCA takedown?
A DMCA takedown asks an online service to remove or block material someone claims infringes their copyright. How the process runs, where notices land, what they contain, and what a request does and does not prove.
What is a DMCA takedown notice?
What a DMCA takedown notice is, what it must contain, who can send one, what happens after it arrives, and how it differs from a Google copyright-removal request.
How a DMCA counter-notice works
What a DMCA counter-notification is, what it must contain, the statutory waiting period, and the real risks — including consenting to a court's jurisdiction. Informational only, not legal advice.
Google copyright removal, explained
How Google copyright removal works end to end: who files requests, what Google does with them, what gets published in the Transparency Report, and how to check whether your domain appears.