Backdoor account discovered in more than 100,000 Zyxel firewalls, VPN gateways The username and password (zyfwp/PrOw!aN_fXp) were visible in one of the Zyxel firmware binaries. Image: ZyxelMore than 100,000 Zyxel firewalls, VPN gateways, and access point controllers contain a hardcoded admin-level backdoor account that can grant attackers root access to devices via either the SSH interface or the