The new CAPTCHA system will be particularly useful to thwart malicious attacks that target default passwords on routers to alter DNS records to hijack all future connections.
[ SEE: Stealthy router-based botnet worm squirming ]
D-Link router models featuring the CAPTCHA roadblock include the DIR-615, DIR-625, DIR-628, DIR-655, DIR-825, DIR-855, DIR-685, and DGL-4500.
D-Link customers must download a software upgrade to get the CAPTCHA integration.