What happens if your authenticator died

Also, I just noticed the sticker on the back that has the serial number of the authenticator has fallen or rubbed off. Thanks for the reply. I tried going to the link you gave me, but it attaches the process of removing the authenticator to this account. I have 3 accounts. This one which I did not attach the authenticator since I recently made it. So an attacker only needs to guess some time values, calculate the corresponding one time pad keys, use them for decryption of the captured server response and check, whether one of the results make sense because of the known format of the included serial number, it is easy to say, whether a result makes sense or not.

If he finds such a result, it is very likely that he guessed the correct one-time pad key and now knows the authenticator ID and the secret code calculation key from the decrypted response. To prevent this attack even if there is no real randomness e. It is possible to reimplement the specification to run the authenticator also directly on the computer. It is difficult to say, whether this is less secure or not in comparison to running it on a real mobile device from an application which is directly supported by Blizzard.

An attacker could read out the necessarily stored secret code calculation key from the computer via a virus and so breaks the security of such a computer authenticator. But with a virus on the victim's computer, the attacker could also read the typed authenticator code when the victim is logging into the game, interrupting the connection of the victim and using the current authenticator code by itself for immediate game login possibly with a bot while preventing further game logins of the victim via a virus.

It is also possible to run Blizzards implementation within a mobile phone emulator on the desktop. An online version also exists and has been publicly available since November The source code of the PHP implementation are published, but this is not the case for the website.

This kind of online application is less secure than a desktop port, but, as an advantage, one can retrieve their code from anywhere. Wowpedia Explore. Main Page All Pages. World of Warcraft. Classic Vanilla Category Utilities. Compatibility iPhone Requires iOS 9.

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