If you are using a few popular aforementioned router brand names, please make sure to check if you were one of the 300,000 compromised routers that got hit by the latest DNS hack just recently uncovered by a group of security researchers.
The hack, albeit simple obtains elevated permissions to access as well as change the DNS setting. The domain name system (DNS) works by translating human-friendly domain names (e.g. www.google.com) into IP addresses that applications use to access web servers.
Team Cymru, the security research group that uncovered the hack disclosed a report of the large-scale attack being made possible by a vulnerability that allows hackers to override the login web interface of TP-Link routers.
The attack was reported to be affecting routers from India, Vietnam, Italy, Thailand and Colombia. The implications of the hack is far-reaching as DNS servers serves to redirect users to the correct IP address. With a compromised DNS resolver, a hacker can easily masquerade a banking website and steal banking usernames and passwords.