Backdoor
nounverified·updated May 9, 2026
An undocumented way of gaining access to a computer system. A backdoor is a potential security risk.
polysemousMWENISTIR 7298: Glossary of Key Information Security Terms, Revision 2
Senses
SANS Glossary of Security Terms
A backdoor is a tool installed after a compromise to give an attacker easier access to the compromised system around any security mechanisms that are in place.
ISACA Cybersecurity Glossary
A means of regaining access to a compromised system by installing software or configuring existing software to enable remote access under attacker-defined conditions
CNSSI-4009 (Glossary of Information Assurance Terms)
Typically unauthorized hidden software or hardware mechanism used to circumvent security controls.
Wordset Dictionary
a secret or underhand means of access to a place or a position
Wordset Dictionary
an entrance at the rear of a building
Wordset Dictionary
an undocumented way to get access to a computer system or the data it contains
Classifications
Entity Type
Vulnerability92%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Sensitivity
unclassified
Information Class
unclassified
Variants
- synonym
- back doorback entrancebackdoor
- alternatephrasing
- Back doorBack Door
- plural
- Backdoors
- possessive
- Backdoor's
- pluralpossessive
- Backdoors'