The article points out this type of attack alone is not a major threat:
"Website defacement of this nature requires only basic programming know-how and usually boils down to changing the main page – a file easy to reconstruct.
"Smaller sites are the ones most vulnerable to defacement, since large sites, databases and electronic commerce website usually have high-level security systems at their disposal.
"A statement by any terror group pointing to a unit dedicated to defacing websites does not necessarily indicate any operational sophistication, since any teenager with basic programming skills can do the same."
Islamic Jihad says hacked Israeli websites