上QQ阅读APP看书,第一时间看更新
DoS and DDoS attacks
A Denial-of-Service is an attack in which online services do not respond to connections from legitimate hosts due to their resources being overused by malicious requests. This attack becomes a Distributed Denial-of-Service (DDoS) attack when it comes from multiple sources and it becomes difficult to block the source with IP or Geo-location.
DDoS attacks usually take the form of the following:
- Volume-based attacks
- Application layer attacks
- Low-rate attacks