Sites and PCs still infected with old malware may now receive new instructions
ScanSafe researchers are seeing renewed activity regarding Gumblar, a multifunctional piece of malware that spreads by attacking PCs visiting hacked Web pages.
Other sites that use complex PHP are also affected
Webmasters who find an annoying error message on their sites may have caught a big break, thanks to a slip-up by the authors of the Gumblar botnet.
Gumblar infects insecure Web sites in order to compromise vulnerable PCs
Security researchers are seeing a resurgence of Gumblar, the name for a piece of malicious code that is spread by compromising legitimate but insecure Web sites.
Attack methods are similar to those used by the Russian Business Network, a disbanded cybercriminal gang
Up to 40,000 Web sites have been hacked to redirect unwitting victims to another Web site that tries to infect PCs with malicious software, according to security vendor Websense.
Gumblar has switched to using a "martuz" domain
In an attempt to stay one step ahead of security companies, the Gumblar web attack has jumped over to using a new domain to pull its malicious software.
