Kaspersky customers in the United States are experiencing an automatic transition to UltraAV antivirus software, developed by Pango Group, following a ban on Kaspersky products by the Biden administration due to security risks. Many users were surprised and frustrated by the abrupt switch, discovering unfamiliar software installed on their devices without prior notice. Complaints have surfaced on social media and Kaspersky's support forum regarding the lack of information about UltraAV and concerns over the transition process. The Department of Commerce's Bureau of Industry and Security identified Kaspersky's products as potential security risks, leading to the ban. Kaspersky announced that updates to its software would cease by September 29, and although Pango stated that notifications were sent to customers, many reported not receiving them. Customers had the option to opt out of the transition by contacting customer service, but many feel the process could have been handled more effectively.