This has to be the most stupid thing I've ever seen.
Advanced Access Content System Licensing Administrator, LLC wish to have the entire world un-remember ever seeing the number "09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0".
As part of their strategy to do so, they send take-down notices, which become a matter of public record, *which include that number*. Well, in the example I linked to, not the entire number, just most of it. There are going to be other cases where they're going to have to include the whole thing though.