Microsoft's monthly Update Tuesday was yesterday and it pushed out six updates covering Windows, Internet Explorer and Microsoft Office. Three of the updates were rated "critical" and three "important."
The most important one, KB3096441, is an update for Internet Explorer that deals with objects in memory. With this flaw, loading a malicious website in Internet Explorer could let a hacker take control of your computer. And while the Microsoft Edge browser in Windows 10 isn't affected, 10 still has Internet Explorer installed to view older sites, so it's at risk too.
The other critical patches fix problems in underlying parts of Windows that could let hackers take over your computer if you end up on a malicious website (KB3089659) or download and run certain types of files (KB3096443). Again, it's a good to know how to spot and avoid phishing emails, like this new one claiming to be from Amazon. It also helps to know what a malicious site looks like so you can leave fast.
The "Important" updates include an update for Edge that prevents hackers from pulling information about you they shouldn't have (KB3096448), a patch for Office that prevents hackers from running programs (KB3096440) and a patch to keep hackers on your computer from getting access to administrator mode (KB3096447).
As always, you want to make sure you download and install these updates right away. Windows 10 will do this for you automatically. You can set Windows 8 and earlier to do the same so you don't have to think about it.