Two steps you can do right now to help protect you from Spectre and Meltdown:
Verify if new Windows protections are enabled:
Microsoft’s update process for Windows has been complicated by compatibility issues with quite a few antivirus solutions, making it more difficult for admins to confirm whether their organizations’ machines are protected or not. To help check, Microsoft has provided a PowerShell script that system administrators can run to verify whether the security updates are in fact installed properly. Check it out on the Microsoft Support site HERE.
Install browser updates and turn on site isolation