UK’s National Cyber Security Center has issued emergency guidance following the WannaCry ransomware outbreak. Don’t block the nonsense domain referenced by the malware, experts warn. Ransomware began infecting tens of thousands of endpoints on May 12. More than 200,000 endpoints had been infected worldwide by the ransomware, across at least 150 countries. The main targets of the ransomware appear to be in Russia, Ukraine and Taiwan, security firm Avast says. In an unusual move, Microsoft has issued one security fixes for three operating systems that it no longer supports.”]