General Patraeus was caught leaking through Gmail. And, amusingly, they didn’t actually send the emails, they just shared an account and wrote draft emails for the other side to read.
Granted, sharing an account with a co-writer turned out to be suspicious behavior, but apparently the government was able to get access to the draft emails that were under Google’s control (and I haven’t heard of any changes to Gmail that would make it more secure now).
