Despite general awareness of the importance of keeping one's system secure, and widespread availability of consumer security technologies, actual investment in security remai...
Abstract— Client puzzles have been proposed in a number of protocols as a mechanism for mitigating the effects of distributed denial of service (DDoS) attacks. In order to provid...
Distributed denial of service (DDoS) has long been an open security problem of the Internet. Most proposed solutions require the upgrade of routers across the Internet, which is e...
—Compromised machines are one of the key security threats on the Internet; they are often used to launch various security attacks such as DDoS, spamming, and identity theft. In t...
Zhenhai Duan, Peng Chen, Fernando Sanchez, Yingfei...
As checking SPAM became part of our daily life, unsolicited bulk e-mails (UBE) have become unmanageable and intolerable. Bulk volume of spam e-mails delivering to mail transfer ag...