Are you suggesting an arbitrary celestial signal containing a payload that can execute on heretofore unknown hardware/software of virtually any progeny? Conceivable? Sure. Also about as likely as chatgpt solving the remaining millennium prize problems or spitting out an algorithm to efficiently reverse selected public Bitcoin addresses to their private keys in actionable time. That said, an extraterrestrial object of artificial origin that could interface and hijack wireless communication devices is far more plausible.