It has happened to me on several occasions and is so frustrating.
Exactly a year ago Getty Images contacted me to advise they had instructed their lawyers in China to take action against a company that was profiting from selling thousands of copies of stolen images. One of my images was involved and Getty advised they would seek my assistance and my immediate thought was that I don’t want to go there to give evidence
given that the virus had escalated. Thankfully about ten days later I got a document to sign just to confirm that I was the owner of that image.