Windows Defence Unit is a rogue program that comes from the Rogue.FakeVimes family of computer viruses. This program is not a real antivirus software but pretends like it is, simultaneously infecting your computer and asking for payment in order to remove it. Don’t trust it! Windows Defence Unit will display fake scan results and false security warning and attempt to scare you into purchasing it. The virus can also steal sensitive data from your computer. Remove it immediately.