A day after a ransomware worm infected 75,000 machines in 100 countries, Microsoft is taking the highly unusual step of issuing patches that immunize Windows XP, 8, and Server 2003, operating systems the company stopped supporting as many as three years ago.
More information at WannaCrypt ransomware worm targets out-of-date systems
Get Security Update at Microsoft Update CatalogMicrosoft said:We also know that some of our customers are running versions of Windows that no longer receive mainstream support. That means those customers will not have received the above mentioned Security Update released in March. Given the potential impact to customers and their businesses, we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download here.
This decision was made based on an assessment of this situation, with the principle of protecting our customer ecosystem overall, firmly in mind.
More information at WannaCrypt ransomware worm targets out-of-date systems