The websites of the National Hockey League (NHL) and Major League Baseball (MLB) have been compromised by malicious code, it has been reported.
Visitors to the site were shown a message telling them that they had to scan their computers for viruses. However, rather than scanning for viruses, malicious software would be downloaded onto their PCs.
According to security experts, the exploitative message only occurred occasionally, making it difficult to track down and remove. Roger Thompson, the chief technology officer at Exploit Labs, told SCMagazine.com: "The user never got a chance to give permission for the virus scan - it just started right away.
"Second, it wasn't really scanning, it was just pretending to scan and showing all sorts of lies about what it was finding." Last weekend saw "a huge rash" of attacks occurring through banner ads on various websites, Mr Thompson added.
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