From gbhackers.com
![Behave](https://i1.wp.com/1.bp.blogspot.com/-K3qKwUL2s6c/XwKydNnbjCI/AAAAAAAAJmw/6YdfVRXTZOgEXEtb1o9jSxgZiI3A9mM9gCLcBGAsYHQ/s1600/Behave.png?w=696&ssl=1)
A new browser extension published dubbed Behave! that warns the user if the website tries to perform a port scan or launch DNS based attacks.
The web sites port scanning issue came into light after a script found on the eBay website that performs local port scans on a user computer to check for remote access.
The port scanning conducted by LexisNexis’ ThreatMetrix fraud protection script that used to detect fraudulent purchases.