How to protect Windows RDP from brute force: 7 steps

Tue, 08 Sep 2026 10:00:00 -0300

While you read this, someone is probably trying to guess the password to your Windows server over RDP. That is not hyperbole: according to Kaspersky, brute force attacks against open RDP ports reached 1.7 million attempts per day in Brazil during peak activity — and Brazil has historically accounted for more than 60% of the attacks recorded across Latin America. RDP is today the leading entry point for ransomware. If you have port 3389 open to the internet without the protections below, it is a question of when, not if.

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How to protect Windows RDP from brute force: 7 steps