Microsoft has a zero-day vulnerability that has not been patched to Windows 7, and Google has released it in a blog post yesterday. With Google Chrome, it's one of the two zero-day vulnerabilities that hackers use to send malicious code to users.
An unpatched vulnerability in Windows 7 could allow a hacker to elevate local privileges and execute malicious code. Google announced in its blog post that this vulnerability exists only on Windows 7 32-bit systems. Earlier versions of Windows 7 may be at risk.
Microsoft is trying to recognize and resolve the issue with Google, but it's already 10 days late to fix it. The Verge, "Microsoft is willing to investigate reported security issues and update them as soon as possible." On the other hand, if you are still using Windows 7 with 32-bit, We strongly recommend upgrading to Windows 10.
Since we already patched the Chrome vulnerability at the end of March 1st, we are about to update to Chrome version 72.0.3626.121 immediately. At least you have to protect yourself from hacking. Chrome is usually updated automatically, but you can manually update it for quick protection. The fix was for Chrome's FileReader, a web API that allows you to read your computer files on your site.