[gruez]

>Thankfully, it is my understanding that Apple decided to fix both of these issues in subsequent devices, and so while there are clearly still bugs there hopefully are no longer any obvious backdoors.

Does this mean. There's a new unpatched exploit out there that greykey is using?

[nostalgk]

From what I can tell, it simply tries to brute force the password (perhaps with some informed suggestion). It does appear to have access to an exploit that bypasses/disables the encryption lock that wipes data off the phone after failed attempts, but it does not appear to utilize an exploit/backdoor to gain access to the device; it gains access the "legitimate" way.