Using warning systems with adaptable thresholds: Choice of security level, compliance and performance in a simulated computer security task.

•Warning systems with adaptable thresholds increase trust and compliance.•Acceptance of such systems is high and perceived workload low.•Adaptable systems raise performance and have the potential to increase security.•Users prefer high (i.e. conservative) over low (i.e. liberal) thresholds.•Certain personality traits can have an impact on users’ choice of threshold.