Single-Dimensional Encryption Against Stealthy Attacks on Stochastic Event-Based Estimation

Dear Editor, This letter studies the problem of stealthy attacks targeting stochastic event-based estimation, alongside proposing measures for their mitigation. A general attack framework is introduced, and the corresponding stealthiness condition is analyzed. To enhance system security, we advocate for a single-dimensional encryption method, showing that securing a singular data element is sufficient to shield the system from the perils of stealthy attacks.