TECH How to scan a QR code with your iPhone or Android phone (no apps needed) QR codes are those pixelated squares you see in restaurants, advertisements, stores, food packaging, business cards ...

A Barcode Scanner App With Millions of Downloads Goes Rogue After an update in December, the app began infecting Android devices, bombarding users with ads on their default browser.

A popular app has been removed from Google Play after it was discovered to have delivered trojanized malware onto millions of users’ phones via an update.