Cybersecurity can fall apart before a firewall gets involved. A poor patch lead...

https://www.bookmark-friend.win/your-network-is-part-of-security-a-bad-patch-lead-can-stop-vpn-handshakes

Cybersecurity can fall apart before a firewall gets involved. A poor patch lead can interrupt VPN handshakes, while a switch left with its default password can give an attacker a path across the network