Hackers have managed to deface several hundred Web sites hosted by Network Solutions, the company said Tuesday.  Network Solutions stated that it is monitoring this threat and working with law enforcement organizations while it works to restore the impacted sites.

Network Solutions described the incident as a "limited attack on websites hosted on Network Solutions Unix servers." Several servers were hit and "intruders were able to get through by using a file inclusion technique," a blog post on the company site stated.
Remote file inclusion attacks are a relatively common way of exploiting buggy Web server programming in order to run unauthorized content on the server. "Our preliminary investigation indicates that the source of entry was through a single site," said spokeswoman Susan Wade

One Network Solutions customer Lucina Mastro learned Sunday that someone had crawled the folders on the Web site she maintains and replaced all of the index.html and main.html files with new files claiming that the defacement was "For Palestine."
Mastro, a volunteer web administrator for a church in San Francisco, replaced the files from backup. That seemed to fix the problem, she said.

Harry Brooks, another Network Solutions client was not so lucky. He learned that one of the sites he oversees had been hacked with a similar defacement Monday, and restored the site from backup, only to learn that it had been defaced anew on Tuesday, apparently by someone else.
The second defacement made no mention of Palestine, but said simply "Server Is RooT!"