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Brute-force attack to find the password, here is how to iOS 11.3 protects the iPhone

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Published on Apr 19, 2018

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A few days ago we have explained you how to better protect an iPhone from any brute force attacks that, by means of special tools, try to find the password with hundreds of attempts. According to several security experts, iOS 11.3 includes a new protection that makes it even more difficult to accomplish this kind of attack.

Tools such as the well-known Gray Key use an exploit that removes the safety guards integrated by Apple, such as the delays between attempts with the wrong and the other during the insertion of the password, or the ability for the user to automatically erase the data on the iPhone after 10 incorrect attempts. With this device, a four-digit code is violated between the six and a half minutes to 13 minutes. A 6-digit code, however, can be violated between 11 and 22 hours, while if you climb to the 8 digits of the fear varies from 48 hours to 92 days. Using a 10-digit code, GrayForce would take between 8 and 25 years (with an average of 12 years) for infringing on the iPhone. For this reason, it is important to use passwords that are at least 10 digits.

Even if there are still no official confirmation, it seems that the latest version 11.3 blocks this type of tool. Some security experts explain that the “starting with iOS 11.3, iOS saves the last time a device has been unlocked with the biometric data or a password is incorrect or has been connected to an accessory or a computer. If it takes seven full days (168 hours) from the last time that iOS has saved one of these events, the port Lightning is completely disabled for other functions of the link different from charging“.

Of course, this news does not causes problems to the rightful owner. If, in fact, the iPhone is not used for more than a week, and then the port Lightning is disabled, it is sufficient to insert the correct password to re-activate it.

This means that iOS 11.3 makes it even more difficult to carry out brute force attacks on the iPhone and the backs have a limited time to work around the password of the user. For this, it is even more important to choose a password at least 10 digits.

 

Link to the original article: brute-force Attack to find the password, here is how to iOS 11.3 protects the iPhone

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