Google Play recently removed 17 apps identified by security company Zscaler to contain malicious adware code. These apps bombard users with unwanted advertisements and collect marketing-type data about them. If you’re one of the thousands of users worldwide who downloaded at least one of these apps, here’s a quick guide to finding and uninstalling them.

Security researchers have discovered a new Android malware called DEFENSOR ID that snuck its way into the Google Play Store. Forensic analysis shows that the malware takes advantage of an Android device’s Accessibility Services to infiltrate the system and cause damage without being detected.