Firewalls Breached The Cisco Zero Day Crisis Redefining Digital Borders

Interesting Tech Fact:

In 1988, just months after the infamous Morris Worm became the first widely publicized internet worm, a group of researchers at Digital Equipment Corporation (DEC) quietly built what is considered the world’s first commercial firewall. Unlike the packet filters of the time, this prototype acted as a “circuit-level gateway,” inspecting traffic before it crossed the network boundary. What makes this moment rare in cybersecurity history is that the idea wasn’t initially marketed as a product of defense—it was conceived almost experimentally, as an engineering safeguard. Yet this obscure innovation laid the groundwork for every enterprise firewall that followed, marking the start of perimeter-based digital protection long before firewalls became synonymous with network security.