Cybersecurity can be undermined before a firewall gets involved. A loose patch...

https://www.cyberdaily.au/strategy/14271-why-physical-network-infrastructure-is-the-overlooked-foundation-of-your-cybersecurity-strategy

Cybersecurity can be undermined before a firewall gets involved. A loose patch lead, an unmanaged switch or a forgotten default password can open the door to outages and unauthorised access