In massive machine-type communications (mMTC). user-specific and non-orthogonal signatures can be assigned to wireless devices for uplink grant-free access. In this paper. we analyze the performance of signature-based grant-free random access in the presence of an adversary. https://www.bekindtopets.com/top-super-H-S-Motorsports-122011-Intercooler-Pipe-Upgrade-Kit-2011-2016-Ford-6-7-Powerstroke-hot-value/