A security hole or an instance of taking advantage of a security hole. "[...] hackers say exploit. syschefs say hole" -- Mike Emke . Emke reports that the stress is on the second syllable. If this is true, this may be a case of hackerly zero-deriving verbs (especially instantials) from nouns, akin to "write" as a noun to describe an instance of a disk drive writing to a disk. (2001-11-24)