Very good point. Though I am writing from the assumption that any organization sufficiently paranoid/sensitive enough to revert to the inconvenience of typewrit

Very good point. Though I am writing from the assumption that any organization sufficiently paranoid/sensitive enough to revert to the inconvenience of typewriters is also sensible enough to keep them in secure, externally-controlled locations, with sufficient air gaps, both electronically and accoustically. Basically, a "stone age saferoom." :)