Frey, M.M.FreyBjelakovic, I.I.BjelakovicStanczak, S.S.Stanczak2022-03-152022-03-152021https://publica.fraunhofer.de/handle/publica/41313510.1109/ISIT45174.2021.95179852-s2.0-85115095668We propose a new method to protect Over-The-Air (OTA) computation schemes against passive eavesdropping. Our method uses a friendly jammer whose signal is - contrary to common intuition - stronger at the legitimate receiver than it is at the eavesdropper. It works for a large class of analog OTA computation schemes and we give two examples for such schemes that are contained in this class. The key ingredients in proving the security guarantees are a known result on channel resolvability and a generalization of existing results on coding for compound channels.en621conference paper