Definition:
A backdoor is a covert method of bypassing normal authentication or encryption in a system to gain unauthorized access to it. Backdoors can be intentionally built by developers or placed by attackers, and can be installed in both software and hardware.
Use Cases:
- Used by attackers to maintain access to a compromised system after an initial breach.
- Sometimes introduced by malware or through vulnerabilities in software.
Related Terms:
Questions and Answers:
- How do attackers exploit backdoors?
Attackers use backdoors to gain persistent access to a system, allowing them to steal data, install additional malware, or manipulate system operations without detection. Backdoors are usually used to gain remote access to a system, where the attacker can then gain access to privileged information such as passwords.
- What are the risks of backdoors in software?
Backdoors pose significant risks as they allow unauthorized access, potentially leading to data breaches, system manipulation, or complete takeover by attackers.
- How can backdoors be prevented?
Preventing backdoors involves regular code audits, patching vulnerabilities, and using intrusion detection systems to monitor unauthorized access attempts. Once a system has been compromised, it is difficult to regain the integrity of the system.