Cybersecurity can unravel before a firewall ever gets involved. A bad patch...

https://www.bookmarkmaster.win/cybersecurity-starts-with-the-physical-network-a-damaged-patch-lead-can-make

Cybersecurity can unravel before a firewall ever gets involved. A bad patch lead can make VPN handshakes fail, while a switch with default credentials can give an intruder a path across the office