I'm concerned that some malicious users of the Stack Exchange network might get 20 (or 30, or 100) people to up-vote every question that they have ever posted on one of the Stack Exchange websites, thus inflating their reputation significantly. Can anything be done to counteract this type of vulnerability?
4See How Secure is Stack Exchange's Reputation?– Ben BrockaJul 12, 2012 at 2:31
Moderators have an arsenal of tools at their disposal to detect abusive voting patterns, be it voting rings, revenge down voting, or anything else. And when such behaviours are confirmed, the votes are invalidated and the offending users suspended.
It happens, it's a problem, but we catch them every time, no need to worry about it.
Thanks for the useful answer. I'm not sure why this question got downvoted, though. Is it off-topic? Jul 12, 2012 at 2:28
@AndersonGreen Don't know, it's definitely on topic, it might be that there's a very similar question out there and the down voter felt you should have searched for it a bit before asking. But that's just a guess on my part. Also, please note that voting is a bit different on Meta than on Stack Overflow.– yannisJul 12, 2012 at 2:30