Back in my days working in Infosec at a bank, we had a naive filter on Internet bound mail looking for "bad words". I had to review the blocked mails if there

Back in my days working in Infosec at a bank, we had a naive filter on Internet bound mail looking for "bad words". I had to review the blocked mails if there was a query about why it was blocked. One time I came across a mail and couldn't for the life of me work out the reason, I ended up writing a script to match on the wordlist to find the problem. Turns out the troublesome phrase was "Don't be too hard on yourself" We updated the block list after that...