Low latency and security are two of the most critical requirements of fifth generation (5G) networks. In this talk, we discuss some of our recent results on topics related to delay aware physical layer security (PLS) for 5G. After a short introduction on the fundamentals of PLS, we first discuss the possibility of employing wireless shared randomness techniques to generate symmetric secret keys in delay constrained applications. Assuming a time division duplex link, we investigate whether a block of orthogonal subcarriers, can be used for “joint” data transmission and secret key generation. We formulate the respective power and subcarrier resource allocation problem as a subset-sum 0-1 knapsack problem, for which we propose a heuristic solution of linear complexity, with virtually no loss in performance. Next, we investigate the performance of non-orthogonal multiple access (NOMA) techniques when both medium access delay and security metrics are taken into consideration. We introduce the novel concept of the “effective secrecy capacity” (ESC) and investigate the downlink of a NOMA network with either an internal (i.e., one of the NOMA users) or an external eavesdropper. Lower and upper bounds are proposed for the ESC in both cases. Interestingly, it is shown that - in contrast to our earlier results for the OMA case - increasing the size of the network results in a reduction of the ESC in both eavesdropping scenarios.