The device manufacturer acquired St Jude Medical last year and has since been working to fix Vulnerability-related.PatchVulnerability severe vulnerabilities found in Vulnerability-related.DiscoverVulnerability its pacemakers . Abbott released Vulnerability-related.PatchVulnerability its second and final round of planned cybersecurity updates to its pacemakers , programmers and remote monitoring systems to fix Vulnerability-related.PatchVulnerability severe cybersecurity flaws in the devices . The patch will update Vulnerability-related.PatchVulnerability the battery performance alert , allowing the device to monitor for abnormal battery behavior and automatically vibrate to tell the patient when something is wrong . The planned updates began last year , and the latest firmware update was approved Vulnerability-related.PatchVulnerability by the Food and Drug Administration last week . The update applies to Vulnerability-related.PatchVulnerability about 350,000 of Abbott ’ s implantable cardioverter defibrillators and implantable cardiac resynchronization therapy defibrillators . The devices were originally manufactured by St Jude Medical , which Abbott acquired last year . At that time , St Jude was under fire for remaining quiet about defibrillator issues that caused rapid battery depletion . The FDA found St Jude continued to ship these devices despite knowing about the defect . In fact , the agency found those flaws caused patient deaths . The flaws , made public Vulnerability-related.DiscoverVulnerability in 2016 by Muddy Waters and security firm MedSec , could allow an unauthorized user to access the defibrillaors and modify the programming controls . Since acquiring St Jude , Abbott has been working to patch Vulnerability-related.PatchVulnerability those vulnerabilities . The FDA ’ s recall notice said the firmware update will reduce the risk of patient harm due to premature battery depletion and potential exploitation of the flaws in the devices . The update will effectively complete the necessary patches to prevent unauthorized access . The update is not a response to any new flaws , but are merely a continuation of last year ’ s patches , according to officials . `` Technology and its security are always evolving , and this firmware upgrade is part of our commitment to ensuring our products include the latest advancements and protections for patients , '' said Robert Ford , executive vice president of medical devices at Abbott , in a statement .