The York company says its work has been copied for use on thousands of products sold online.
Skylar Dalziel made about £42,000 from selling music she had stolen, including Shawn Mendes music.
The internet entrepreneur faces several criminal charges in the US, including copyright infringement.
EE plans to extend a court-ordered home-broadband ban on pirate music websites to its mobile network.
Gary Bowser admitted to making hacking tools that allowed people to play pirated games.
A 33-year-old man and a 48-year-old woman have since been released under investigation, police say.
Police make three arrests over a platform thought to have served hundreds of thousands of customers.
Piracy is once again in the spotlight as rights holders threaten legal action for illegal streaming.
Universities are urged to block a science research website, which police say could put data at risk.
