Computer network infrastructures are increasingly vulnerable to cyber attacks, according to a warning sent by the U.S. Computer Emergency Readiness Team.
“The advancing capabilities of organized hacker groups and cyber adversaries create an increasing global threat to information systems,” the Sept. 20 alert states.
“The rising threat levels place more demands on security personnel and network administrators to protect information systems. Protecting the network infrastructure is critical to preserve the confidentiality, integrity, and availability of communication and services across an enterprise.”
Network infrastructure is made up of linked devices that transport communications used for
data, applications, services, and multi-media.
“Routers and firewalls are the focus of this alert; however, many other devices exist in the network, such as switches, load-balancers, intrusion detection systems, etc.,” the alert says.
Perimeter device defenses can no longer reliably protect networks from attacks and organizations need to find new ways to defend against attacks.
One example is the September 2015 cyber attack known as SYNful Knock that silently changes a router’s operating system image and allowing hackers to gain a foothold within the victim network.
Other attacks covertly change firmware on devices used to load operating systems and inject malicious code into a running system.
Sept. 20, 2016