PC World reports that a hacker has created a virus that replaces the infected files with octopus photos

The Ika-tako virus (which is Japanese for Squid-Octopus) as it has been named first came to shore in May via Japanese file sharing Website Winny. Since then, it has reportedly gone on to infect somewhere between 20,000 and 50,000 computers, according to Asahi.com.

The virus disguises itself in music files, which users then download. Once the file is played, the malware runs through the computer’s hard drive, infecting anything from family photos to important OS files. The infected files are swapped with the squid, octopus or sea urchin pictures and removed, then supposedly sent to the hacker's server.

  Ika-tako Virus Replaces Your Files With Octopus Photos