They contain sexually explicit comments, obscene photos, and photos apparently stolen from newspapers, blogs, Facebook pages, school websites, and even clothing catalogs.
Police might press charges against the owner of the drives that hold the child abuse image material - most likely, an Ontario data centre that houses the files.
The former acting director of cybersecurity for the US Department of Health and Human Services is one of 6 so far to be convicted in an ongoing FBI investigation that used drive-by malware to track the online activities of child abusers.