To this day, cybercriminals still have an old reliable weapon in their arsenal — email. With it, criminals can fool recipients into revealing personal information or clicking on a malware-ridden attachment. This kind of scam is called phishing, and it continues to persist because many people still fall for it.

Over the years phishing -- a social engineering attack that uses seemingly innocuous emails to trick victims into giving away personal information or clicking a malicious link -- has grown in sophistication and scale. In order to put a stop to these scams, Google has made some security enhancements for Gmail.