  In a paper by Alberto Caballero, a methodology is stated for estimating the
probability of an exoplanet alien civilization having malicious intentions
toward the human civilization after being messaged by it and estimating the
number of malicious exoplanet civilizations in the Milky Way. Caballero states
his paper attempts to provide these estimates. Caballero's methodology uses
questionable hypotheses and excludes important parameters, indicating his
methodology and estimates should be rejected.
