This page contains information regarding Star Trek: Picard, and thus may contain spoilers.
In 2369, Gul Jasad flooded subspace with antilepton interference near Deep Space 9 in order to halt its subspace communications with Starfleet while he was attempting to gain answers to his questions about the sudden disappearance of Gul Dukat's warship. (DS9: "Emissary")
In 2399, former Tal Shiar operative Laris speculated Zhat Vash operatives had saturated Dahj Asha's apartment with antileptons in order to remove any trace of their presence; this had the effect of overwriting the particle residuum and inhibiting her attempts at forensic molecular reconstruction in a barely detectable way that otherwise would have been perceived as instrument failure. The act of performing this saturation would have been at no small risk to the perpetrators themselves. (PIC: "Maps and Legends")