The BBC said it has solved the problem, but that it didn't know how many programmes had been downloaded in this way. It said that viewers would have to be "quite technically inclined" in order to use it.
The Week: Online news - Hackers target BBC iPlayer
Hackers have discovered a way to get around the BBC's anti-piracy settings on its iPlayer internet TV service, potentially allowing viewers to download television shows on to their computers without any copyright protection.