A batch of updates paint a bulls-eye on computers running Windows Server 2003, researchers say. Affected businesses are urged to upgrade to the latest Windows OSes, which offer security patches that can address the threat. There may be over 500,000 Windows server 2003 machines publicly exposed to the internet, according to Shodan, a search engine for devices. The best solution to protecting a vulnerable Windows Server system is to upgrade, experts say. There are many more vulnerable machines running behind company firewalls.”]