When we began this series, we discussed the ICMP (Internet Control Message Protocol). This protocol is the basis for two widely used applications, ping and traceroute. In this lesson and the next, we ...

Today, researchers have disclosed their findings on a novel Windows malware sample that uses Internet Control Message Protocol (ICMP) for its command-and-control (C2) activities. Dubbed "Pingback," ...

Researchers say BlackNurse attacks are low bandwidth (18Mbps) and can still knock offline many of today’s firewalls. A type of denial of service attack relevant in the 1990s has resurfaced with ...

We’ve all been online from home a bit more than usual lately, in ways that often stretch the limits of what our ISP can muster. You know the signs — audio that drops out, video sessions that make you ...

TCP/IP is the collection of protocols that manages connectivity across the Internet. Because system attacks that take advantage of flaws and weaknesses in the protocol generally do not get as much ...