Correct Answer - Option 1 : Trap doors
The correct answer is Trap doors.
The Trap doors are code that recognizes some special sequence of input or is triggered by being run from a certain user ID by an unlikely sequence of events.
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Trap Door:
- A trap door is a secret entry point into a program that allows anyone to gain access to any system without going through the usual security access procedures.
- It is a method of bypassing normal authentication methods.
- Hence it is also known as a back door.
- It is used by the Programmers to debug and test programs.
- It can become a threat when any dishonest programmers gain illegal access.
- A standalone malicious program that may give full control of an infected PC to another PC is called Trojan horse.
- A logic bomb is a small code that is intentionally inserted into a software system and will set off a malicious function when specified conditions are met.
- A virus is a computer program that can change and replicates itself by modifying other computer programs and inserting its own code.