Defenition of the word backdoor

Defenition of the word backdoor
- A design fault, planned or accidental, that allows the apparent strength of the design to be easily avoided by those who know the trick.
- A door in the rear of a building.
- a secret or underhand means of access (to a place or a position)
- an entrance at the rear of a building
- an undocumented way to get access to a computer system or the data it contains