TY - JOUR N2 - This paper introduces security assessment methodology for isolated single-workstation multilayer systems processing sensitive or classified data according with a corresponding security model for such system. The document provides a high-level tool for systematizing certain-class-systems security models development. The models based on the introduced methodology cover data confidentiality and availability attributes protection on a sufficient level. L1 - http://www.czasopisma.pan.pl/Content/117100/PDF/69_2556_Wiechecki_skl.pdf L2 - http://www.czasopisma.pan.pl/Content/117100 PY - 2020 IS - No 3 EP - 505 DO - 10.24425/ijet.2020.134005 KW - cybersecurity KW - security assessment methodology KW - security model KW - Graham-Denning model KW - Bell-La Padula model KW - Clark-Wilson model A1 - Wiechecki, Daniel PB - Polish Academy of Sciences Committee of Electronics and Telecommunications VL - vol. 66 DA - 2020.09.17 T1 - Security Assessment Methodology for Isolated Systems of a Certain Class SP - 499 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/117100 T2 - International Journal of Electronics and Telecommunications ER -