Robert Krten just announced the secure rm utility for QNX. Unlike the normal "rm", "secure rm" can wipe a file all to zero before unlinking it. or, for the really security-minded individual, it can write multiple copies of randomized garbage over the file before unlinking it. "srm" is intended to replace "rm" and the alpha version is available at http://www.parse.com/samples/manpages/srm.html