RUFFCUT

RUFFCUT was a dangerous file-sharing computer virus which caused issues in 2005 Earth.

Nature
RUFFCUT was a malignant computer virus which, after scanning a victim user's preferences, would masquerade as a desirable file (such as pirated material) that the user would download; if downloaded, the virus would unleash a "catastrophic payload". This involved slowing down the Internet and shutting down the networks of many businesses. (PROSE: Computer Virus File Sharing Alert)

History
On 10 March 2005, within the final hour of the four hours of the virus becoming active, RUFFCUT brought down a hospital, three government departments across Europe, and the traffic systems in Lisbon. In a press briefing released by UNIT, Lt. D Judd spoke about the dangers and warned everyone to not download any pirated material. (PROSE: Computer Virus File Sharing Alert)

Behind the scenes
RUFFCUT may have been an indirect response to the real world case of early versions of TV: Rose being pirated online, especially sa the virus's name mirrors "rough cut", which was the state of Rose which was pirated.