![]() ![]() "UPnP was designed for LANs, and as such, it has no security. Millions of routers throughout the world have the Universal Plug and Play (UPnP) networking protocol enabled on internet-facing ports, which exposes them to external attack. Some other devices will not accept passwords longer than 16 characters - the minimum length for password safety today. Many consumer-grade home-gateway devices fail to notify users if and when firmware updates become available, even though those updates are essential to patch security holes, Horowitz noted. "A compromised router can spy on you," Horowitz said, explaining that a router under an attacker's control can stage a man-in-the-middle attack, alter unencrypted data or send the user to "evil twin" websites masquerading as often-used webmail or online-banking portals.
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