People who are trusted to do "dirty work" are usually licensed or otherwise tested by a credible organization of similarly-employed professionals to make sure each individual is morally and legally accountable for their own actions.

Guess it's finally time for software engineers to be licensed in order to legally write code that affects human lives (just like every other professional engineer). The ethics oversight boards that come with the territory can then laugh off the next "Pegasus" that anyone tries to work on.

Not like this will stop people from trying, but at least they won't have a professional engineer writing their code :^)