A flood of such data can block access to servers by clogging bottlenecks in the network infrastructure, thus preventing legitimate data from reaching its destination. However, ICMP data is not essential to network administration, and many servers...
It overwrites the original and attempts to block an infected computer's access to sites that could host important security updates. The MyDoom.B variant appeared on Wednesday and, among other things, prevents an infected PC from accessing some...
In a statement, Cisco said it is aware of the dictionary attack method that exploits known vulnerabilities to password-based security schemes for WLANs. Like any password-protected security mechanism, EAP-FAST could still succumb to a dictionary...
Such a distributed denial-of-service, or DDoS, attack can block access to a website for several hours or even days. The attack that blacked out Google, Yahoo! A security professional who participated in investigating the attack confirmed that the...
As well as mailing itself on, the mass-mailer downloads a Trojan called Win32.Fantibag to the infected machine, which is designed to block antivirus software updates. Thomas said the virus does not appear to block access to CA's virus patch update...
In April, a patch was developed that allows people to block Java and Flash-based pop-ups unless they come from trusted sites. The schemes typically combine spam email and fraudulent web pages that look like legitimate sites.