Except for Dynamic Encryption
which.. does exactly that.. sorta.
which.. does exactly that.. sorta.
Sort of... but it is different, because you cannot keep Dynamically encrypting in my opinion. You get your roll to increase the threshold. Eventually, your Hacker WILL gain access... the benefits to Dynamic Encryption is that it increases the time that it takes the Hacker to gain access (Because you already know someone is attempting to penetrate your system), thus providing the system with the time to bring other security measures to its defense.
Besides, Dynamic Encryption is not compatible with Strong Encryption, which is my preferred method (Along with Dramatic Encryption when appropriate, Page 66, Unwired) of securing a system. Even with a 1 Minute, Strong Encryption method, you have effectively stymied your hacker... increasing the interval much beyond the Minute range effectively removes Hacking-on-site as a viable alternative (relegating it to the Decking Schemes of earlier editions) unless you have employed some form of Social Networking to obtain a valid passcode into the system.