TY - JOUR A1 - Buck, Christoph A1 - Olenberger, Christian A1 - Schweizer, André A1 - Völter, Fabiane A1 - Eymann, Torsten T1 - Never Trust, Always Verify: A Multivocal Literature Review on Current Knowledge and Research Gaps of Zero-Trust JF - Computers & Security KW - zero-trust KW - network security KW - access control KW - software-defined perimeter KW - multivocal literature review KW - SDP Y1 - 2021 U6 - https://doi.org/10.1016/j.cose.2021.102436 SN - 0167-4048 VL - 110 IS - 2021, November ER -