Blackdoor

A backdoor is a hidden method hackers use to gain unauthorized access to a computer system or software. Once installed, it allows them to bypass normal security measures, such as passwords or authentication protocols. This access can be used for espionage, stealing information, or taking control of the system. Backdoors are often covertly introduced through malware, malicious updates, or embedded in software vulnerabilities. They pose significant security threats because they remain undetected unless specifically monitored for, enabling malicious actors to exploit compromised systems over extended periods.