Following on the from the Muppetgate scandal, in which Greg Smith publicly resigned and humiliated Goldman Sachs (Goldman employees allegedly refer to their clients as "muppets"), Goldman Sachs is taking no chances about further damage to its reputation. It has organised a Muppet hunt.
Goldman Sachs has started scanning emails for the term "muppet" It is not clear as to whether the firm is also searching for; Kermit, Miss Piggy, Fozzie Bear or Gonzo the Great.
Neither is it clear what Goldman's will do to any hapless employee who has used the offending term in an email.
As to whether this scan is a breach of employee's rights of privacy depends very much on their terms and conditions of employment, and what rights they signed away when joining Goldman Sachs.