BV:AutoRun-AS [WRM] on f-secure.com, should I be worried?

Got this message while browsing F-Secure’s website, “We’ve safely aborted connection on www.f-secure.com because it was infected with BV:AutoRun-AS [WRM]” Should I be worried? This happened once a long time ago, and a full scan with both Avast and Malwarebytes turned up nothing.