This is always the problem with invasive techniques in that someone could abuse it.
British privacy advocates introduced a legal challenge on Tuesday against one of the country’s intelligence agencies, saying the agency illegally hacked personal computers.
The case follows revelations that Britain’s Government Communications Headquarters, or G.C.H.Q., developed so-called malware that allowed the government to turn on computer microphones and cameras without the owners’ consent.
The activities allowed the British intelligence agency to collect information like gender, marital status and the education level of individuals, according to Privacy International, the group filing the complaint. Privacy International To Challenge UK's GCHQ Over Net User Surveillance [bits.blogs.nytimes.com]