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Toward Operator Access Management in SCADA System: Deontological Threat Mitigation

机译：SCADA系统中的操作员访问管理：减轻威胁论

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摘要

One of the most dangerous insider threats in a supervisory control and data acquisition (SCADA) system is deontological threat. The concept of deontological threat has been introduced to underline the operator performance when he/she does not perform his/her duties perfectly or decides to abuse the privileges in order to perform malicious operations in remote substations. In this paper, a new alarm-and-trust-based access management system (ATAMS) has been proposed that is able to reinforce the security of the SCADA system against the deontological threats. In the proposed ATAMS, the accessibility of a remote substation will be determined based on the operator trust and the integrity level of the substation. The value of operator trust is calculated using the performance of the operator, periodically or when an anomaly is detected. One of the opportunities of the ATAMS is its ability in detecting the anomalies, which is rooted in the deontological threats.
机译：监督控制和数据采集（SCADA）系统中最危险的内部威胁之一是本体论威胁。引入了道义威胁的概念，以强调操作员在不能很好地履行其职责或决定滥用特权以便在远程变电站中执行恶意操作时的表现。在本文中，提出了一种新的基于警报和信任的访问管理系统（ATAMS），该系统能够增强SCADA系统抵御本体论威胁的安全性。在提议的ATAMS中，将基于操作员的信任和变电站的完整性级别来确定远程变电站的可访问性。定期或在检测到异常时，使用操作员的表现来计算操作员信任的值。 ATAMS的机会之一是其发现异常的能力，这种异常根源于道义上的威胁。

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