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October 29th, 2013

How many variations of “qwerty” and “1234″ can you think of?

passwords strip_

http://www.dilbert.com/

I am quite surprised at how inventive people can be when it comes to the thinking up weak passwords. The obviously weak combinations like ’1234′ or ‘qwerty’ along with names and phone numbers are quite common parts of passwords.

Some background

The story begins with me fighting a familiar piece of malware, Bicololo, which is spyware designed to steal the identity from users of Russian social networks. A routine task you might say. This time the authors were less cautious with settings on their rogue servers, so I managed to get hundreds of freshly-stolen credentials. What to do with them? The first thing I tried was contacting support of the affected social network to get users warned and passwords reset. Unfortunately, my effort met no success there; they did not even bother to answer my mail! So instead of getting to warn hundreds of innocent users on the Russian social network,  I used this unique opportunity to analyze the habits users have regarding their passwords and share it with our AVAST readers.

Once I cleaned up the data, I received about 850 unique combinations of username-password pairs. This is not enough variants for the results to be widely  representative. The data was obtained from a rather specific group of (less experienced) users whose lack of knowledge allowed their computers to be infected. I expect the general reality to be a bit better than my results. Though my findings are not scientifically-correct, they can give us some insight into the problem and show us examples we should avoid while choosing our passwords. Read more…

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