The new attack already has hit some 200,000 Web pages, mostly those using phpBB technology, McAfee's Avert Labs research arm reported in its blog.
After a long trend toward targeted exploits, hackers appear to have rediscovered the mass attack, researchers say. Two weeks ago, researcher Dancho Danchev reported a number of attacks on ZDnet sites via iFrame. Then last week, McAfee reported a mass attack that infected more than 10,000 Websites (See McAfee Warns of Mass Web Attack.)
"The ASP attacks are different than the phpBB ones in that the payload and method are quite different," the blog stated. "Various exploits are used in the ASP attacks, where the phpBB ones rely on social engineering." The new attack can best be described as a Trojan, the company said.
Tim Wilson, Site Editor, Dark Reading