Source : Free On-Line Dictionary of Computing

hack attack
     
         (Possibly by analogy with "Big Mac Attack" from
        advertisements for the McDonald's fast-food chain; the variant
        "big hack attack" is reported) Nearly synonymous with {hacking
        run}, though the latter more strongly implies an all-nighter.
     
        [{Jargon File}]
     
        (1996-08-26)