Denial of service close Denial of Service (DoS) AttackA denial-of-service (DoS) is any type of attack where the attackers (hackers) attempt to prevent legitimate users from accessing the service.

X has been hit by a "massive cyber attack", according to Elon Musk ... had been hit by several waves of denial of service (DoS) attacks at around 9.45am. According to the National Cyber Security ...