Ok I want to make a pause here, we are all speculating ourselves since we can't really prove what is happening, some say this is possible to re-use some others say it's not. Other people are bringing up to light the issue about logging in multilpe times on the same account, which is another matter of great importance.

And for those who say, if you got infected it's your fault, please if you're not going to add anything productive just stand back and keep it to yourself, a lot of people don't know how to protect themselves or what security preventive measures to adopt, and on top of that, you are always vulnerable, it's just that by keeping some basic measures you can reduce the risk chances a lot. Anyway, please if you do know so much, enlighthen the others with your knowledge.

And again, it doesn't matter if the user got infected by their own doing, it still doesn't justify SE not doing what they can to prevent and help all these situations. After all it's their service and their business, if they don't help taking care of their customers, there wouldn't be much of a service anymore. SE should implement every reasonable security measure they can in order to make this a more secure enviroment.