Turn on Two-Step Verification in your Roblox account settings to prevent unauthorized logins.
Compressed archives like .rar or .zip files from unofficial sources are the most common way hackers distribute viruses, keyloggers, and trojans. Roblox.rar
In your Roblox account settings, click "Log Out of All Other Sessions" to force any hackers out of your account. Turn on Two-Step Verification in your Roblox account
Use a trusted program like Windows Defender or Malwarebytes to scan your entire computer for infections. Roblox.rar
Change your password on Roblox and any other accounts (like email or banking) if you used the same password.