The U.S. Cybersecurity and Infrastructure Security Agency (CISA) revealed today that attackers who hack Ivanti VPN appliances using one of multiple actively exploited vulnerabilities may be able to maintain root persistence even after performing factory resets. […]

from https://www.bleepingcomputer.com/news/security/cisa-cautions-against-using-hacked-ivanti-vpn-gateways-even-after-factory-resets/