No, you don't have to be notified. Have you never heard of a wiretap? They've been doing wiretaps for as long as telephones have been around (about a century

No, you don't have to be notified. Have you never heard of a wiretap? They've been doing wiretaps for as long as telephones have been around (about a century now, I think). Obviously you don't have to notify a suspect that they're being tapped. As for your link, that's completely irrelevant: that only talks about when officers are allowed to enter your home when you're there. It doesn't even mention what the law is if no one's home. It does say they're allowed to enter if they announce their presence and no one answers after some time. It does not mention whether they have to notify you, and the reasons they'd be busting down your door after announcing themselves are totally different from the reasons they'd be spying on you, so these aren't even comparable scenarios. Jeesh, all you have to do is watch TV for the last 50 years or so: police (or other law enforcement investigators, more likely FBI) absolutely can and do spy on people with warrants, including using "bugs". They've been doing this for ages, it's nothing new. And until recently, there was a legal process for this, requiring a proper warrant.