Cyber denial of service is cyber attack

https://www.c4isrnet.com/opinion/2021/02/04/cyber-denial-of-service-is-cyber-attack/

When cyber events deny service or make systems inoperable, many are reluctant to call these events attacks. That hesitation is unhelpful, an expert argues.

https://peterholland765.wordpress.com/2021/02/05/cyber-denial-of-service-is-cyber-attack/