Western Digital is still reeling from two differentmajor exploits that were used to remotely wipe the hard drives of its My Book Live products, but the headache has not ended. Several other Western Digital NAS drives running its OS 3 also have a vulnerability that the company won’t fix. A new report published by security journalist Brian Krebs found that Western Digital products running the company’s My Cloud OS3 software have a zero-day vulnerability that can only be fixed by upgrading to the company’s OS 5 (there is no OS 4). Two researchers named Radek Domanski and Pedro Riberio originally planned to demonstrate the security flaw last year at a hacking competition, but Western Digital released OS 5 which patched out the bug they found before they could. That new update nullified their work because the competition required entries to work against the latest firmware supported by the targeted device.