32
yA.C. Hobbs, Locks and Safes: The Construction of Locks, 1853:  “A commercial, and in some respects a social doubt has been started within the last year or two, whether or not it is right to discuss so openly the security or insecurity of locks.  Many well-meaning persons suppose that the discussion respecting the means for baffling the supposed safety of locks offers a premium for dishonesty, by showing others how to be dishonest.  This is a fallacy.  Rogues are very keen in their profession, and know already much more than we can teach them respecting their several kinds of roguery.”