User:Alicevoe/sandbox

Summary
Backdoors are a form of hacking aimed at gaining secret access to a program, online service, or device. They are built into the original software, that gives the access to special functions, but are mostly used by the original programmer. A backdoor that is built into one operating system can be used on any computer that runs that software. A specific type of backdoor, called a Trojan Horse, appear to be legitimate program, but when clicked, it enacts an activity with malicious intent. Trojan Horses can be used to create vulnerabilities in a device in order to gain access to passwords or destroy data on that device.