News last few ago I talked to a Firefox extension able to display personal information of all users who are connected in the same WiFi network, is add-on called Firesheep.
But a person with the pseudonym Zscaler created a solution to this problem which I call Blacksheep, which is another extension that notifies the user if someone is in the same wireless network using Firesheep.
Despite being a good alternative to counter the actions of Firesheep does not prevent the intrusion of the latter, one notes that someone is using, so the only effective solution is to avoid using a WiFi network.
