If the term doesn't exist in Italian and you're translating it for the first time, it can't be wrong (by definition). I had never seen the Greek translation of "by default" in Greek, but now it's just one more computer term.
And you can do even worse: translate "by default" with "in caso di successo" (trans.: "in case of success")
Or also very bad: translate "by default" with "alla scrittura su disco" (trans.: "when writing on disk")
At least the new term must not mean anything else than what it should.