I think everyone reading this post has accidentally messed up when sending an email, right? I noticed this story recently: The Metropolitan Police has apologised to victims of the Westminster "honeytrap" scandal after it accidentally sent an email which named all of them. … the sender, a detective sergeant in the Met’s Diplomatic and Parliamentary Protection unit, included the recipients’ names in the CC section of the email, rather than BCC, which would have concealed their identities. …