Related:

• live data: n. 1. Data that is written to be interpreted and takes over program flow when triggered by some un-obvious operation, such as viewing it.
  One use of such hacks is to break security. For example, some smart terminals have commands that allow one to download strings to program key...
• letterbomb 1. n. A piece of email containing live data intended to do nefarious things to the recipient's machine or terminal.
  It used to be possible, for example, to send letterbombs that would lock up some specific kinds of terminals when they are viewed, so thoroughly that the user must cycle power (see cycle, sense 3) to unwedge them....
• letterbomb: 1. n. A piece of {email} containing {live data} intended to do nefarious things to the recipient's machine or terminal.
  It is possible, for example, to send letterbombs that will lock up some specific kinds of terminals when they are viewed, so thoroughly that the user must cycle power (see {cycle}, sense 3) to unwedge them....
• magic number n. [Unix/C; common] 1. In source code
  some non-obvious constant whose value is significant to the operation of a program and that is inserted inconspicuously in-line (hardcoded), rather than expanded in by a symbol set by a commented #define....
• ampoline n. An incredibly hairy technique, found in some HLL and program-overlay implementations (e.
  g., on the Macintosh), that involves on-the-fly generation of small executable (and, likely as not, self-modifying) code objects to do indirection between code sections....
• ampoline: n. An incredibly {hairy} technique, found in some {HLL} and program-overlay implementations (e.
  g., on the Macintosh), that involves on-the-fly generation of small executable (and, likely as not, self-modifying) code objects to do indirection between code sections....
• fence: n. 1. A sequence of one or more distinguished ({out-of-band}) characters (or other data items)
  used to delimit a piece of data intended to be treated as a unit (the computer-science literature calls this a `sentinel')....
• fence n. 1. A sequence of one or more distinguished (out-of-band) characters (or other data items)
  used to delimit a piece of data intended to be treated as a unit (the computer-science literature calls this a `sentinel')....
• virus n. [from the obvious analogy with biological viruse
  via SF] A cracker program that searches out other programs and `infects' them by embedding a copy of itself in them, so that they become Trojan horses....