The source code of several operating systems (OS) developed by Microsoft has been published online, sparking public concerns about security. Access to source code removes the arduous process of uncovering vulnerabilities, meaning that threat actors could find zero-day vulnerabilities in Windows OS and develop exploits. As the most widely used affected OS, Windows XP is probably the most vulnerable to exploitation, but its low user rate is unlikely to incentivize malicious actors to develop exploits. Before the source code collection was published, it had already been reportedly in circulation, meaning that the affected OS would already have been scanned for exploitable flaws.
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