After 30 years of using the Internet and trying many communication formats, e-mail is still my favorite. However, e-mail has many problems. Spam is just annoying, but phishing and especially, spear phishing attacks can also be dangerous. A recent security training, and a Twitter thread I started about it, changed my mind completely about how I treat these harmful e-mails. phishing (fishing :-) ) The old way While most spam and some phishing can easily be filtered, spear phishing messages are unique by their nature.