Buy.com: Next down was this e-commerce site, hit on Tuesday morning; it never went totally black, but availability dropped to a low of 9.4 percent

eBay: The auction house was almost totally incapacitated for hours Tuesday afternoon; a second attack was thwarted the next day

CNN.com: Tuesday afternoon, the site was crippled from 4:45 to 5:30, when less than 5 percent of users could reach the home page

ZDNet.com:. Wednesday brought a new round of attacks, starting with this media outlet; its home page was unreachable for almost two hours, from 4:15 to 6:15 in the morning

E*Trade: The next attack was directed at the online trading house; on Wednesday the site’s home page lagged between 5 and 7 a.m.

Datek: The brokerage was difficult to reach for only 30 minutes on Wednesday morning; the site denies it was attacked by hackers

Excite: The last attack hit Excite on Wednesday night. The home page was slow for two hours; from 7:15 to 7:30, availability was 42.9 percent