As many players know, there is always a message on our login screen that tells us how third-party programs consist keyloggers, which will most likely be the reason to the loss of our accounts. In related to this, this message has recently changed into the following:
"We've noted a rise in attempted game account thefts. Account Theft often results from risky player behavior (purchasing gold online, sharing accounts, using third-party programs, answering bogus emails, or having weak passwords.) To protect yourself, use a complex password and change it regularly."
So what is really the reason for Anet to make this change? I'm not certain to what the reason is, but I do have an approximation. Just recently, a friend of mine who has not logged on for 7 months has logged on briefly. Knowing how he swore not to reinstall the game, I was shocked, and I asked him shortly afterwards. This is when I discovered that he has never reinstalled the game and that an email was sent to him about his password being changed. Of course, we have retrived his account as soon as possible. The one thing that troubled me was that although my friend is not wealthy in the game, none of his items were stolen in the process of being hacked. We've only notice the change in his password.
Here's a brief analysis of the reasons stated by Anet, which made have led to this incident:
Purchasing gold online: My friend hasn't logged on for 7 months, and he doesn't even care about his account upto this point of being hacked. So I doubt he would purchase gold online.
Sharing accounts: He has not given his account and password away to anyone; the only exception was made is because he wanted me to retrive his account.
Third-party programs: Same reason as purchasing gold online.
Answering bogus emails: I'm not sure about this one.
Having a weak password: He uses the password that's given of the password reset option, and in a sense, it is probably weak, but how does someone else know the string of his account name?
Just to speculate, I wish that the community can discuss what is likely to be the cause of this incident. To be more frightening, once again, I want to point out that the theif did not take any of his items. What was the theif planning to do with the account? Just think about it - how many of us would stop playing Guild Wars for a few weeks here and there. Imagine one day when we come back to this game, we are being accused of botting or selling in-game gold, which results in an account termination. That is truly scary.
D

