When it comes to securing your Wi-Fi network, WPA2 -PSK encryption is always recommended . It is the only truly effective way to limit unauthorized access to home wireless networks, however, WPA2 encryption has security gaps.
There are two methods for “cracking” a password, generally referred to as offline and online. In an offline attack, the attacker has a file of data that he can attempt to “crack”. For example, if an attacker manages to access and download a database of hashed passwords, he could then attempt to crack those passwords. He can guess at a rate of millions of guesses per second and the only real limit is the speed of his computer. It is clear that, with access to an offline database of passwords, the attacker can attempt to “crack” a password much more easily. This is achieved through “brute-force” where he literally tries to guess the password by trying various combinations in the hope that one will match.
