TFN2K causes denial-of-service attack
CERT · Network Security · 2000
CERT Advisory CA-99-17 reports that all systems connected to the Internet can be affected by denial-of-service attacks. Tools that run on a variety of Unix and Unix-like systems and Windows NT systems have recently been released to facilitate these attacks. Additionally, some MacOS systems can be used as traffic amplifiers to conduct a denial-of-service attack.