Every Tuesday, Microsoft issues patches for security vulnerabilities. But this week's Patch Tuesday, or Update Tuesday if you're using Windows 10, wasn't just another security precaution.
At least one of the dozen patches Microsoft issued this week is already being exploited by hackers. This one is a critical fix for a Microsoft graphics program. Another patch, Microsoft's 100th patch for the year so far, fixes known vulnerabilities in Windows Media Player.
In the meantime, other patches were issued for Microsoft's old but still widely used Web browser, Internet Explorer. Another patch is a fix for IE's replacement browser, Microsoft Edge.
If you're using the Windows 10 operating system, these patches will automatically be updated. For older versions of Windows, if you're set up for automatic updates, you're fine. If you're not sure, check out these tips to set up automatic updates.