lod123 shares a report from Threatpost: Nearly a half-million pacemakers are up for a firmware update to address potentially life-threatening vulnerabilities. Abbott (formerly St. Jude Medical) has released another upgrade to the firmware installed on certain implantable cardioverter defibrillator (ICD) or cardiac resynchronization therapy defibrillator (CRT-D) devices -- a.k.a., pacemakers. About 465,000 patients are affected. The update will strengthen the devices' protection against unauthorized access, as the provider said in a statement on its website: "It is intended to prevent anyone other than your doctor from changing your device settings." The update comes after 2016 claims by researchers that the then-St. Jude's cardiac implant ecosystem was rife with cybersecurity flaws that could result in "catastrophic results."