fail-open
An anti-pattern in security systems in which access is granted by default when the system encounters an anomaly or cannot determine the permission state. In permission revocation scenarios, this causes access rights that have already been revoked to remain in effect.
Timeline (last 90 days)
Session startup remains fail-open, so broken hooks do not block editing; the cloud-side blocking startup gate leans fail-closed, turning a missing shim into an explicit commit failure.
In security engineering, fail-closed means denying by default when a dependency is unavailable (high security, reduced availability), while fail-open means allowing by default (good availability, possible false negatives).
The fail-safe or fail-closed principle means that when the system cannot determine whether an operation is reversible, it classifies it as irreversible and thereby blocks the Agent from executing it, a strategy widely adopted in security-sensitive systems.
A fail-closed design holds only for the operations the hook actually covers; if an equivalent path has no hook registered, the system is effectively fail-open for that path, and single-point fail-closed cannot be used to infer overall security.
Fail-open means the system chooses to let the operation through when a security mechanism fails; fail-closed means it blocks by default when it fails.
The vast majority of vector index pipelines only design an additive path and reserve no mechanism for reclaiming already-ingested documents upon authorization changes, so when revocation occurs the system fails open rather than fails closed.
Fail-open refers to defaulting to allow passage under abnormal conditions, as opposed to fail-closed.
The fail-open design ensures that even if the routing layer encounters a problem, the entire Agent will not stall but will instead fall back to the original execution path.
A fail-open design means that when the billing check service goes down, the system defaults to allowing requests through to ensure continuity of user experience, at the cost of temporarily losing cost control.
Fail-open design refers to the practice where, when a billing check service goes down, the system defaults to allowing requests through rather than rejecting them, in order to ensure continuity of user experience.
All Facts (10)
Session startup remains fail-open, so broken hooks do not block editing; the cloud-side blocking startup gate leans fail-closed, turning a missing shim into an explicit commit failure.
50%UnverifiedIn security engineering, fail-closed means denying by default when a dependency is unavailable (high security, reduced availability), while fail-open means allowing by default (good availability, possible false negatives).
50%UnverifiedThe fail-safe or fail-closed principle means that when the system cannot determine whether an operation is reversible, it classifies it as irreversible and thereby blocks the Agent from executing it, a strategy widely adopted in security-sensitive systems.
50%UnverifiedA fail-closed design holds only for the operations the hook actually covers; if an equivalent path has no hook registered, the system is effectively fail-open for that path, and single-point fail-closed cannot be used to infer overall security.
50%UnverifiedFail-open means the system chooses to let the operation through when a security mechanism fails; fail-closed means it blocks by default when it fails.
50%UnverifiedThe vast majority of vector index pipelines only design an additive path and reserve no mechanism for reclaiming already-ingested documents upon authorization changes, so when revocation occurs the system fails open rather than fails closed.
50%UnverifiedFail-open refers to defaulting to allow passage under abnormal conditions, as opposed to fail-closed.
50%UnverifiedThe fail-open design ensures that even if the routing layer encounters a problem, the entire Agent will not stall but will instead fall back to the original execution path.
50%UnverifiedA fail-open design means that when the billing check service goes down, the system defaults to allowing requests through to ensure continuity of user experience, at the cost of temporarily losing cost control.
50%UnverifiedFail-open design refers to the practice where, when a billing check service goes down, the system defaults to allowing requests through rather than rejecting them, in order to ensure continuity of user experience.
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