A person might make the mistake of failing to protect against many of the issues from the previous pages, or of leaving information lying in plain sight for a loved one to find. Haven't you ever sent an IM, text or e-mail to the wrong person, or unintentionally posted something to a wider audience than you intended? These errors are common, sometimes thanks to auto-complete or our increasingly quick digital communication reflexes that cause us to hit send before we realize we've done something wrong. Former U.S. Representative Anthony Weiner accidentally posted a picture of his underwear-clad crotch to his Twitter page in a sexting snafu, ultimately bringing to light several online relationships and leading to his resignation from Congress.
But in an affair situation, you're also trusting another party not to make any mistakes that might give you away. Even if you're a security buff who is very careful to cover your trail, who is to say your partner in crime is doing the same? Just ask former U.S. general and director of the CIA David Petraeus, whose jealous mistress sent harassing messages to a suspected rival, which led to an FBI investigation that brought to light their relationship, as well as a possibly inappropriate relationship between the potential rival and another high-ranking general. The e-mails were sent anonymously, but were apparently not anonymous enough, since the investigation led right to the mistress. The scandal resulted in General Petraeus's resignation.
Most uncovered dalliances will not result in national publicity or resignation from a high-level government post, but they will cause the pain and suffering of everyone involved. And seriously, just think for a moment about the fact that the head of the CIA couldn't keep an affair hidden. Pretty much everyone is bound to slip up somewhere down the line. And in this day and age, it's likely to be a technological slip-up.