Odex's website was subsequently defaced by an unknown hacker with no hacker group claiming credit for the action.

After that, that website was hacked and defaced by unknown hackers.

Meanwhile, internet services in the West Bank and Gaza came under attack by unknown hackers on Tuesday, according to officials.

Establish Computer Expertise: The defense is likely to argue that they have very limited knowledge on computer technology and therefore vulnerable to exploitation by an unknown hacker.

It would be subtle and devious, but the unknown hacker might have buried a virus in the shapes of the letters themselves.

The newspaper's Web site (www.nytimes.com) was operational yesterday, although it was still under attack by an unknown hacker, or hackers, flooding the computer with phony requests for access.

Otherwise, the website is often attacked by unknown hackers.

On February 4, 2010, Goojje was attacked by unknown hackers.

Early in the morning, three hours before the polls opened, the website of my newspaper went down after it was subjected to a distributed denial-of-service attack by unknown hackers.