Just as there is no perfect boat or perfect date, there is no perfect security or privacy. You can make things more and more difficult for your adversary (and

Just as there is no perfect boat or perfect date, there is no perfect security or privacy. You can make things more and more difficult for your adversary (and usually for yourself too) but if they are dedicated enough they can basically outspend you. Therefore you need to minimize the apparent cost of your actions and their duration. You can afford to be a passing pain in their butt but you can't afford to be the focus of their eye.