Botnets are often used to perform distributed denial-of-service (DDoS) attacks, which bring web servers down by overloading them with traffic, but this new line of attack is different.

僵尸网络通常被用于进行分布式拒绝服务(Distributed Denial of service, DDoS)攻击，其可以通过使其流量过载的方式使网络服务器瘫痪；但这种新的攻击与之不同。

youdao

They first attempted a distributed denial of service (DDoS) attack, which floods a target with massive amounts of traffic.

他们首先尝试了DDoS攻击，也就是分布式拒绝服务攻击——向攻击目标发送大量数据。

youdao

The continuous port scans, the worm traffic, the DDoS attacks, have to be winnowed down to something actionable.

FORBES: DHS Deploying Wrong Weapons In Cyberwar

The group's members employed techniques to flood websites with high traffic - known as DDoS attacks - in order to render them unusable.

BBC: UK Lulzsec hacker Ryan Ackroyd pleads guilty

Cory Doctorow has recently written a thought-provoking piece for Make about the nature of distributed denial of service (DDoS, flooding a website with illegitimate traffic to cause it to crash) as a form of political protest.

FORBES: Denial of Service: Sit-in? No. Protest? Yes.