Democratic presidential hopeful Bernard Sandersâ economic plan triggered Gmailâs âphishing scamâ antenna, with the mail system saying the senatorâs liberal campaign promises â including lower prescription drug prices and free college for all â sound like frauds. âBe careful with this message. It contains content thatâs typically used to steal personal information,â Gmail said in a bright red warning box that appeared at the top of a message sent by Mr.