Every Wi-Fi network is protected by a security protocol — either WPA2, WPA3, or the ancient and completely broken WEP. If your router is more than 4 years old, you are almost certainly running WPA2. Here is what changed with WPA3 and whether it matters.
What Is WPA2?
WPA2 (Wi-Fi Protected Access 2) has been the standard Wi-Fi security protocol since 2004. It uses AES-CCMP encryption and the 4-way handshake for authentication. It is still secure when configured correctly, but it has known vulnerabilities.
WPA2 Vulnerabilities
- PMKID attack — Attackers can capture a single packet from a WPA2 network and crack the password offline at GPU speeds. No client needs to be connected.
- KRACK attack — Key Reinstallation Attack allows attackers on the same network to potentially decrypt traffic on some implementations.
- Dictionary attacks — If the password is weak, WPA2 handshakes can be cracked quickly with wordlists.
What Is WPA3?
WPA3, released in 2018, addresses all major WPA2 weaknesses. Key improvements include Simultaneous Authentication of Equals (SAE), which replaces the 4-way handshake and completely blocks offline dictionary attacks even if an attacker captures network traffic.
Key Differences
- Offline attacks — WPA2 is vulnerable to offline cracking. WPA3-SAE prevents this entirely.
- Forward secrecy — WPA3 provides perfect forward secrecy. Even if your password is later compromised, past sessions cannot be decrypted.
- Open networks — WPA3 introduces OWE (Opportunistic Wireless Encryption), which encrypts even open/public Wi-Fi with no password.
- Password strength — WPA3 is significantly stronger even with a weak password than WPA2 with the same password.
Should You Upgrade?
Yes, if your router supports it. Check Settings → Wireless Security in your router admin panel. Enable WPA3 if available, or WPA2/WPA3 mixed mode for compatibility with older devices.
Generate a strong Wi-Fi password regardless of which protocol you use with Anonymiz WiFi Password Generator.
