Here are some ways that using Tor Browser on Windows or macOS might not be as safe as you think:
External applications: When you open an external application or document while using the Tor Browser, it is not routing its traffic through the Tor network. As a result, your IP address and other identifying information will be exposed, compromising your anonymity.
Browser fingerprinting: Despite Tor Browser’s efforts to minimize browser fingerprinting, adversaries may still be able to use advanced techniques to uniquely identify your browser based on the Windows or macOS environment, such as screen resolution, installed apps, and font settings. This can lead to tracking and identification.
Malware and malicious websites: Tor Browser does not protect you from malware or malicious websites. If you unknowingly download or interact with malware, your system could be compromised, and your identity exposed