CDN Abuse Reporting for Copyright Infringement

Run a lookup on a pirate streaming site and the IP address will often belong to a large content delivery network rather than a hosting company. That is by design. The site's operator has put a reverse proxy in front of the real server, and the proxy answers every request. To the outside world the CDN looks like the host, but in most cases it is not storing the site.

What a CDN actually does for a pirate site

A CDN sits between visitors and the origin server. It caches static files, absorbs traffic, filters attacks, and hides the origin's IP address. For a pirate operator the last two features matter most: hosts receive fewer complaints because complainants cannot see them, and the site survives the traffic spikes that come with a major release.

Some services are pure pass-through: they forward requests to the origin and cache little. Others store large files at the edge for long periods. Video delivery networks may host the media itself. The kind of service determines what the provider can do.

What a CDN will do with a complaint

Many CDNs that act as reverse proxies take the position that they do not host the content and cannot remove it. Their abuse process instead does two things: it forwards the complaint to their customer, the site operator, and it discloses the hosting provider of the origin server to the complainant, so the complaint can be sent there.

That disclosure is often the most valuable result of a CDN report. It turns an anonymous site into one with a known host and a known abuse contact. Some CDNs will also take action themselves in narrower cases, for example where they store the infringing file at the edge, or under terms of service that prohibit certain uses.

Providers that host video segments or files directly are in a different position. They can usually remove specific content, and should be treated like a host.

The page and the video live in different places

On a streaming site the page and the video rarely come from the same place. The page might be served through a reverse proxy, while the player loads its stream manifest from a different domain, and the video segments from yet another. Each of those may sit with a different provider.

Identifying them means watching what the player requests while it plays: the embed source, the manifest file, the segment domains, and any token or referrer checks. A worked example: a page on a streaming piracy site is proxied through a CDN. The player inside is an embed from a video hosting service, which pulls its segments from a storage bucket on a cloud provider. A report to the page's CDN would at best reveal the page's origin. A notice to the embed host and the storage provider would remove the video itself from every page using it.

The same applies to download sites, where the button often leads through redirects to a cyberlocker. The cyberlocker, not the CDN in front of the link page, holds the file.

What a good CDN report contains

CDN abuse forms usually ask for:

• the exact URLs on their network that carry or link to infringing content
• the protected work and the rights holder's identity or the authorised agent's details
• a description of the infringement, with captures where the form allows
• the statements their policy requires, often modelled on a DMCA-style notice

Be specific about what is being asked. Requesting removal from a pass-through proxy that cannot remove anything wastes a round of correspondence. Requesting forwarding and origin disclosure gets a useful answer faster.

Sequencing the work

A practical order for a proxied site runs like this. Trace the player and download paths first, and send notices to any host that actually stores the file. Submit the CDN complaint for the page, asking for origin disclosure. When the origin host is disclosed, send the notice there with the evidence and the CDN's reply attached. Keep checking whether the site has moved origin, because operators who learn their host has been disclosed sometimes move to a new one.

The aim is to act where the file lives. The comparison of source takedown vs link removal shows why removal at the origin lasts longer than action at the edge.