Computer virus (World War Three)

The Ninth Doctor once created a computer virus to erase himself off the Internet. It was on a CD disc.

History
On 7 March 2006, after defeating the Slitheen family, the Ninth Doctor gave Mickey Smith the virus on a disc while talking (TV: ) on Maddock Way (TV:, ) in the Powell Estate, which he pulled from one of his pockets. The Doctor explained that, if Mickey was to put it online as he instructed, it would erase every mention of himself off the Internet, making him "cease to exist"; the Doctor agreed with Mickey that he was dangerous and therefore didn't want people following him. (TV: )

The following morning, however, Mickey admitted to the readers of his website, Who is Doctor Who?, in an editorial that he couldn't bring himself to use the virus. Mickey felt that the Doctor shouldn't be making decisions on behalf of mankind, and felt that it was "enough" that he even had the virus in his possession. Although, if the Doctor was really too dangerous, Mickey was prepared to use it. (PROSE: )