What is a firewall? How network firewalls work

A firewall sits between a network and the Internet, controlling data flow in and out of the network to stop…

Memcached can speed up websites, but a Memcached server can also be exploited to perform a DDoS attack. What is…

A reverse proxy protects web servers from attacks and can provide performance and reliability benefits. Learn more about forward and…

Personal information is any information that can identify a person, from someone’s name and address to their device identifier and…

A threat intelligence feed is a data stream about potential attacks (known as “threat intelligence”) from an external source. Organizations…

Threat intelligence is information about potential attacks. It helps organizations take action to defend themselves against these attacks. Threat intelligence…

A zero-day exploit is an attack that takes advantage of a mostly unknown security vulnerability. What is a zero-day exploit?…

A next-generation firewall (NGFW) is a security appliance that processes network traffic and applies rules to block potentially dangerous traffic.…

Ports are virtual places within an operating system where network connections start and end. They help computers sort the network…

DNS was not designed with security in mind, and many types of attacks were created to exploit vulnerabilities in the…