> Broadly speaking, § 1030(a)(5)141 prohibits a variety of acts that result in damage to a computer. Subsection 1030(a)(5) may be used to prosecute many of the activities that are commonly associated with hacking, such as the transmission of viruses or worms and unauthorized access by intruders who delete files or shut off computers.142 The provision may also be used to prosecute the perpetrators of Distributed Denial of Service (DDoS) attacks,143 which occur, for example, when an attacker overwhelms a server’s ability to process legitimate requests by overloading the server with a flood of illegitimate traffic.1
Kicking your friend offline (via DDOS or other) would prevent it from processing legitimate requests and count as a breach of CFAA.