A major bug in Apple’s FaceTime app surfaced on Monday that allows anyone with an iPhone, iPad or Mac computer to eavesdrop on other users without their knowledge. Apple said Monday evening that it was aware of the glitch, was working on a fix and would release it in a software update later this week.

In the meantime, Apple has turned off Group FaceTime, the feature that allowed for surreptitious listening, which should temporarily resolve the issue. But for those who want an extra layer of security, follow these steps to turn off FaceTime on your devices.

Step 1: Check if you’re susceptible

Before you do anything, you need to make sure your Apple device was affected by the glitch. It exists on iOS devices with the most recent software updates, starting with iOS 12.1, which was released in October. That release introduced the Group FaceTime feature.