The Bell-LaPadula model technically only enforces "confidentiality," or "secrecy," controls, "i.e.", they address the problem of the sensitivity of objects and attendant trustworthiness of subjects to not inappropriately disclose it. The dual problem of "integrity"(i.e., the problem of accuracy, or even provenance of objects) and attendant trustworthiness of subjects to not inappropriately modify or destroy it, is addressed by mathematically affine models; the most important of which is named for its creator, K. J. Biba. Other integrity models include the Clark-Wilson model and Shockley and Schell's program integrity model, "The SeaView Model"