Earlier quoted context omitted.
By definition, DDOS, are malicious no? Otherwise, the site is just having high traffic that it cannot handle. If my blog goes down after being on the front page of HN, is that a DDOS?
I think it's more the term "attack" that indicates maliciousness. Getting Slashdotted or Hacker Newsed is definitely a distributed denial of service, but it's not so much an attack
DDoS is by definition malignant.