Ethical Hacking Essentials Practice Test

In cybersecurity, what does a backdoor allow an attacker to do?

1. Encrypt files

2. Monitor network traffic

3. Gain remote access to a system

4. Install additional malware

The correct answer is: Gain remote access to a system

A backdoor is a method by which an attacker can bypass normal authentication or encryption in a computer system, application, or network. By establishing a backdoor, the attacker creates an unauthorized access point that allows them to control the system remotely without the knowledge of the legitimate users. This remote access can be exploited to manipulate, steal, or delete data, as well as execute commands or install other malicious software. The function of a backdoor primarily revolves around enabling this covert access to the system instead of merely performing actions such as encrypting files, monitoring network traffic, or installing malware, which can indeed occur but are often actions taken post-access, rather than methods of entry. Thus, the essence of a backdoor revolves around gaining remote access, which is central to many exploits in cybersecurity.