Defending Your Wireless Network Against Handshake Capture
Wi-Fi security is unique because your network packets broadcast through walls and into public spaces. Using tools like aircrack-ng or hcxdumptool, an attacker sitting in a car outside your home or office can passively capture your router's 4-way WPA handshake or PMKID broadcast.
Once captured, the attacker can take the handshake home and run automated dictionary attacks using Hashcat at over 1 million guesses per second. If your Wi-Fi password is short or a dictionary word, it can be compromised in minutes.
Why 20 Characters is the Gold Standard for Wi-Fi
Using a 20-character mixed-case alphanumeric and symbol password increases the brute-force search space to over 9520 combinations. At this level of entropy, offline GPU cracking of a captured WPA2 handshake becomes completely impossible.