What is a backdoor?

A backdoor opens a “backdoor” to your computer or mobile device through which hackers and other malicious individuals can connect to your machine and infect it with malware and spam.

How does a backdoor work?

Backdoors are used by hackers to gain access to a device by circumventing security mechanisms. Often times developers install backdoors as a means of troubleshooting their program, but this also leaves a gap for hackers to exploit. The term is often used to describe vulnerabilities put in place on purpose, for example, to allow government surveillance groups to access citizens’ smartphones and computers.

Perhaps the most common backdoor is the use of default passwords. If you’ve ever accessed a Wi-Fi router’s admin console by typing something like “admin” into the username and password fields, you’ve exploited a backdoor.

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