Biblio

Aiming at the prevention of information security risk in protection and control of smart substation, a multi-level security defense method of substation based on data aggregation and convolution neural network (CNN) is proposed. Firstly, the intelligent electronic device(IED) uses "digital certificate + digital signature" for the first level of identity authentication, and uses UKey identification code for the second level of physical identity authentication; Secondly, the device group of the monitoring layer judges whether the data report is tampered during transmission according to the registration stage and its own ID information, and the device group aggregates the data using the credential information; Finally, the convolution decomposition technology and depth separable technology are combined, and the time factor is introduced to control the degree of data fusion and the number of input channels of the network, so that the network model can learn the original data and fused data at the same time. Simulation results show that the proposed method can effectively save communication overhead, ensure the reliable transmission of messages under normal and abnormal operation, and effectively improve the security defense ability of smart substation.

"Moving fast, and breaking things", instead of "being safe and secure", is the credo of the IT industry. However, if we look at the wide societal impact of IT security incidents in the past years, it seems like it is no longer sustainable. Just like in the case of Equifax, people simply forget updates, just like in the case of Maersk, companies do not use sufficient network segmentation. Security certification does not seem to help with this issue. After all, Equifax was IS027001 compliant.In this paper, we take a look at how we handle and (do not) learn from security incidents in IT security. We do this by comparing IT security incidents to early and later aviation safety. We find interesting parallels to early aviation safety, and outline the governance levers that could make the world of IT more secure, which were already successful in making flying the most secure way of transportation.

Certifying security controls is required for information systems that are either federally maintained or maintained by a US government contractor. As described in the NIST SP800-53, certified and accredited information systems are deployed with an acceptable security threat risk. Self-adaptive information systems that allow functional and decision-making changes to be dynamically configured at runtime may violate security controls increasing the risk of security threat to the system. Methods are needed to formalize the process of certification for security controls by expressing and verifying the functional and non-functional requirements to determine what risks are introduced through self-adaptation. We formally express the existence and behavior requirements of the mechanisms needed to guarantee the security controls' effectiveness using audit controls on program example. To reason over the risk of security control compliance given runtime self-adaptations, we use the KIV theorem prover on the functional requirements, extracting the verification concerns and workflow associated with the proof process. We augment the MAPE-K control loop planner with knowledge of the mechanisms that satisfy the existence criteria expressed by the security controls. We compare self-adaptive plans to assess their risk of security control violation prior to plan deployment.