Win+R is the Windows keyboard shortcut that opens the Run dialog. It gives quick access to programs, files, and commands, which makes it useful for administrators and also attractive to attackers. In normal use, a user types a trusted command and launches it locally.
In social-engineering attacks such as ClickFix-style chains, Win+R becomes a bridge from a web page to code execution. A fake verification prompt may instruct the victim to press Win+R and paste a command that starts PowerShell, mshta.exe, cmd.exe, or another script host. Defenders watch for suspicious sequences such as browser activity followed by Win+R, clipboard changes, and a sudden process spawn from the Run dialog. Training users to treat pasted commands as high risk and monitoring those process chains can help stop the handoff from browser to shell.