* If it's really about few really bad crimes, then nothing needs to change. In addition to the traditional methods, Governments already have ways to hack a few

* If it's really about few really bad crimes, then nothing needs to change. In addition to the traditional methods, Governments already have ways to hack a few people. It's just that the more people they hack the more likely it is that the hack gets discovered and they want to spy on the masses. * We leak tons of metadata. Even with encryption it will be available to governments and gives them tons of ways to pin down people. Eg. in some cases police used location information of cell phones to create a list of suspects. A lot of that metadata is very hard to avoid so it's likely going to stay. * You don't just protect yourself from the government, but also the provider. Recently a report surfaced about a yahoo employee searching his colleauge's yahoo accounts for naked pictures. * Providers can also get hacked. If the data is in encrypted form at the provider, the hackers would have to issue an update of the client which is usually harder than "just" hacking some servers. Those hackers can even be foreign governments. * Safe deletion gets much harder when you have to worry about data on your provider as well. There were stories about providers not deleting data that users explicitly wanted to be deleted. There's also the problem of safe hardware decomissioning. Although most big shops are handling this problem more professionally than most individuals who just run format on their laptop's hdd and then offer it on ebay, you still have to take them by their word and rely that they do their job well.