Internet photo police are a real thing. I learned this lesson the expensive way last year. I received a formal letter from Getty Images citing that an image on my blog from 2007 was copyrighted and the image company had no record I paid for use of the photo. Apparently, big photo houses now have teams of professionals watching the web and also use special image tracking software to find illegal photo usage. I immediately looked into their claim and found that the blog article and photo in question was posted by an intern who had worked for me. I was not aware that there was a violation as I trusted that the intern knew the rules of copyright protected images and usage.