What is Backdoor attack?

A backdoor attack refers to a method where unauthorized access to a computer system, application, or network is achieved through a hidden entry point. This entry point allows an attacker to bypass normal authentication procedures and gain privileged access to the system undetected.

Here are some key characteristics of a backdoor attack:

1. Unauthorized Access: The attacker gains access to the system without proper authentication or authorization.
2. Hidden Entry Point: The backdoor is typically a hidden vulnerability or a deliberately inserted malicious code that provides an alternative means of access.
3. Avoids Detection: Backdoors are designed to evade detection by security mechanisms such as antivirus software, firewalls, and intrusion detection systems.
4. Persistence: Once established, backdoors often remain active for extended periods, allowing attackers to return to the system at will.
5. Purpose: Backdoors are used for various malicious activities, including data theft, surveillance, installing malware, disrupting operations, or launching further attacks.
6. Methods: They can be implemented through software vulnerabilities, weak passwords, social engineering, or insider threats.

Protecting against backdoor attacks involves implementing robust security measures such as regular system updates, strong authentication mechanisms, monitoring for unusual activities, and conducting thorough security audits.