WPA3 delivers several security improvements. Here’s a big one:

When you connect to an open Wi-Fi network, the traffic between your device and the Wi-Fi access point will be encrypted, even though you didn’t enter a passphrase at the time of connection. This will make public, open Wi-Fi networks much more private.

You can read about the other improvements here:

What Is WPA3, and When Will I Get It On My Wi-Fi?

Unfortunately, WPA3 does have design flaws. See this site for more details:

Analysing WPA3’s Dragonfly Handshake

Also, WPA3 also suffers from implementation flaws, which can happen when a manufacturer writes the software that allows their hardware to use the new specification. You’ll need to check with each vendor to find security updates for specific devices.

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