Originally Posted by cashley
Copyright infringement from your service provider is something that was downloaded to your system whether music, games ect. It is not your pics of your cakes
Not necessarily. If a service provider maintains web space for its customers, and infringing pictures (of cakes or anything else) are posted to that web space, the copyright owner may contact the service provider which would take down the pictures and inform the customer of the infringement. In fact if the service provider does not do this they may lose liability protection under the DMCA Safe Harbor provisions.
Of course OP does have the right to find out from the service provider which items were infringing, so there's no need to guess.