Microsoft’s Safety & Security Center site was poisoned with links to pornographic URLs. Microsoft restored the site’s search field early Monday afternoon ET. Security expert: “This isn’t normal search poisoning. It’s poisoning the results with actual searches” Microsoft appears to have purged site’s saved search list of the dangerous links. Such sites are often also used to spread malware and spread malware, expert says.Microsoft did not immediately reply to questions and a request for comment on the problem.Gregg Keizer covers Microsoft, Apple, Web browsers and general technology breaking news for Computerworld.”]