If you’re a Lenovo laptop owner, then you’ve probably heard about the Superfish adware the company added to its consumer PCs last fall.

If you purchased a Lenovo PC between September and December, what can you do? We have a step-by-step guide for removing it manually, but Microsoft also just stepped in to make the process a bit easier.

As noted(Opens in a new window) by security researcher Filippo Valsorda, a new update to Windows Defender removes Superfish and the SSL certificates that the adware circumvented in order to operate.

GO MICROSOFT pic.twitter.com/81gs9PkDKx(Opens in a new window)

— Filippo Valsorda (@FiloSottile) February 20, 2015(Opens in a new window)

Windows Defender is Microsoft’s anti-spyware software(Opens in a new window), and is included with Windows. You can’t uninstall it, but you can turn it off if you want a more robust antivirus solution.

According to PC World(Opens in a new window), Microsoft Security Essentials, Redmond’s free anti-malware software, will also eradicate Superfish.

According to Valsorda(Opens in a new window), though, the certificate remains on Firefox. As ZDNet noted(Opens in a new window), Windows Defender doesn’t work with Firefox because Mozilla’s browser has its own certificate store.

Lenovo was reportedly going to provide a tool to remove anything Superfish-related from its laptops today, but nothing has been released. (Update: Lenovo released its own tool(Opens in a new window) late Friday night.)

To run Windows Defender, click the Start button, type “Defender” in the search box, and click Windows Defender in the list of results.