Recently we had an issue with a new client. The old website provider decided that they were not happy we took over web marketing for this client and sent us a nice letter telling us that we needed to remove the website under the DMCA.
Before we had a chance to even think about responding we got a notification from our hosting provider that they were going to take it down because of failure to comply with the DMCA.
The problem was that all the brand elements on the site were brand elements of the client (taken from their artwork). All the images on the site were stock photos... pretty sure that this web builder doesn't own those images. And the content was so bad that we changed it this week anyway as part of the new contract.
The best part is that the bottom of the old website said, very specifically, that the copyright was our client's. So, it was reasonable to assume that our client owned the copyright.
You'd think that, too, if it was yours, right?