Changes to the law in Australia mean that Police can use spyware to keep an eye on certain people:

The Surveillance Devices Act allows police to obtain a warrant to use software surveillance technologies, including systems that track and log keystrokes on a computer keyboard. The law applies to the Australian Federal Police and to state police investigating Commonwealth offences.

Critics have called the law rushed and imbalanced, saying police will be able to secretly install software to monitor email, online chats, word processor and spreadsheets entries and even bank personal identification numbers and passwords.
I wonder if their "software" will show up in spybot or adaware?

Read more here.