WhatsApp is urging its 1.5 billion global users to update its app immediately to avoid the possibility of becoming the latest target in a spyware scandal. After Monday’s scare, I think it’s time to heed their warning. 

According to security researchers, the spyware was developed by Israel’s secretive NSO group and can be installed without anyone even knowing it’s there. WhatsApp has confirmed this and insisted that we all get the latest update.

Once installed, the spyware is able to initiate your phone’s camera and mic, skim your emails and messages, and even find out where...