Kaspersky's antivirus software was force-replaced with UltraAV without users' consent due to the U.S. government's ban on Kaspersky.Approximately one million U.S. customers woke up to find their Kaspersky software uninstalled and replaced by UltraAV.Some users expressed confusion and concern over the lack of consent and choice in the migration process.Kaspersky defended the automatic migration, citing the need to ensure continuous protection for customers.