Read the article here:
Do you ever check to see what each update actually does? Microsoft's SecurityTech Center provides the details of each update. Check out their security bulletin summary for January 2016 at:
The info might be a bit techy, but you can find out how critical a certain update might be. At any rate, making sure you keep your computer updated is very important. Questions? Send an email to email@example.com. You may have to copy and paste the email address into your email program if you have not configured your computer to use your default email program.
NOTE: Do you know about Patch Tuesday?