Final answer:
WPA3 uses Simultaneous Authentication of Equals (SAE) to provide increased security during the handshake phase, offering better protection against offline dictionary attacks and unauthorized access.
Step-by-step explanation:
The WPA3 security feature designed to increase security at the handshake phase is Simultaneous Authentication of Equals (SAE). Unlike WPA2, which uses a Pre-Shared Key (PSK) for the initial handshake, WPA3's SAE uses a Dragonfly Key Exchange mechanism to provide better protection against offline dictionary attacks. This ensures that the process of establishing a secure connection is more resistant to third-party interference and password guessing efforts.