The backdoor encryption is usually done to access the BIOS by using the administrative password when the settings associated with hardware is needed to change. Often the backdoor password may not be known to the users which are usually kept secret by the software developer. This is done in order to protect the computer system safe from the unauthorised intruder to the computer and change the BIOS. However, if the user knows the administrative password or backdoor password to access the BIOS, then in the case of he or she forgot the password and username to access the system can use the administrative password access the system.
The manufacturers of motherboard and computer systems normally keep this master password in order to open the computer system if the BIOS is locked. If a user seeks to open the computer without the knowledge of the username and password or in the case of forgetting the username and password, then he or she must know who the manufacturer of the computer system or motherboard is. The user can navigate the motherboard or computer’s manufacturer’s site using a different computer. The user can also try to know the motherboard and computer by looking at them and by reviewing their specifications or BIOS drivers or user guides and find out about the manufacturer.
Once the manufacturer is known to the user, he or she can turn on the computer and type their name and then command enter. For example, if the manufacturer is Toshiba, then the user has to type “Toshiba” and press enter. Then the user has to try master passwords by guess and if this does not serve the purpose, then he or she has to know the password from the vendor of the manufacturer.
However, the backdoor has several meanings and application. The backdoor can be a legitimate point for accessing the remote administration. Some backdoor accesses are protected with user names and passwords which can never be changed. This is done in order to protect the BIOS and access the system when it is locked. On the other hand, when attackers gain access to the BIOS they can install their own backdoor and can come and go as they please and install malware. This malware is often called trojan or RAT which can further be used to install other deadly malware for data exfiltration. This has been happening in numerous cases across the world and sometimes the attackers are performing this in a bigger way.