The document discusses the privacy of email and how David Petraeus's affair with Paula Broadwell was discovered through their emails. It notes that Petraeus and Broadwell tried to avoid creating an email trail by composing draft emails and leaving them in a draft folder for the other to access. The FBI was ultimately able to use subpoenas to obtain IP logs connecting Broadwell's anonymous Gmail account to others accessed from her devices, confirming her involvement with Petraeus. The discovery of the affair led to Petraeus's resignation as CIA director.