What is a significant weakness of Pre-Shared Key (PSK) authentication?

The significant weakness of Pre-Shared Key (PSK) authentication lies in its implementation in protocols like WEP, where it can lead to static key issues. When a PSK is used, the same key is shared among users to access a network. In the case of WEP, this key does not change frequently, which means that if an attacker gains access to this static key, they can easily compromise the entire network. WEP's weak encryption and poor key management practices further exacerbate this vulnerability, making it easier for unauthorized users to exploit the network. Therefore, the weakness of relying on static keys in PSK schemes, especially in older or poorly implemented protocols like WEP, is a critical concern for network security.