Twelve Tricks

Twelve Tricks

Twelve Tricks is a trojan horse that first appeared around 1990.

Purdue University issued a bulletin about the trojan on March 8, 1990. [http://ftp.cerias.purdue.edu/pub/advisories/ciac/a-fy90/a-20.ciac-twelve-tricks-trojan-horse] The trojan came in an altered utility file called CORETEST.COM, which was intended to test performance of hard drives. The trojan affected IBM platform computers running MS-DOS or PC-DOS. The trojan alters the master boot record (partition sector) and, at every reboot, it installs one of twelve "tricks" that causes issues with hardware or operation of the computer. The trick vanishes when the power is cut off, and any of the twelve tricks may appear or reappear on the next reboot. In addition, on each boot the trojan uses a random number generator to determine whether to do a low-level format of the active copy of the boot sector and the first copy of the FAT; there is a 1/4096th chance of this happening. If the format does not happen, the trojan randomly changes one random word in any of the first sixteen sectors of the FAT, leading to a gradual corruption of the file system.

References

External links

* "Morality and Machines" [http://books.google.com/books?id=CWLyryduwMYC&pg=PT231&lpg=PT231&dq=%22Twelve+Tricks%22+trojan+horse&source=web&ots=bY9UqRBgFS&sig=Y7TF0EPk_t61YPVrPkorYXVyg18&hl=en 214] .


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • List of confidence tricks — This list of confidence tricks and scams should not be considered complete, but covers the most common examples. Confidence tricks and scams are difficult to classify, because they change often and often contain elements of more than one type.… …   Wikipedia

  • List of snowboard tricks — Snowboard tricks are aerials or maneuvers performed on snowboards for fun, or in competitions. Most often, these maneuvers are performed on obstacles such as jumps, halfpipes, quarterpipes, hips, handrails, funboxes, or ledges, or on the surface… …   Wikipedia

  • Box of Tricks — Infobox Album Name = The 12 Collection Type = Box set Artist = Queen Released = 1992 Recorded = Genre = Rock Length = ? Label = Parlophone Producer = ? Reviews = Last album = This album = Next album = Box Of Tricks is a compilation box set by… …   Wikipedia

  • Safety play — in contract bridge is a generic name for plays in which declarer maximizes the chances for fulfilling the contract (or achieving a certain score) by ignoring a chance for a higher score. Declarer uses safety plays to cope with potentially… …   Wikipedia

  • Whist — Infobox CardGame title = Whist subtitle = image link = image caption = alt names = type = trick taking players = 4 play = Clockwise card rank = A K Q J 10 9 8 7 6 5 4 3 2 ages = num cards = 52 card deck = Anglo American origin = England related …   Wikipedia

  • Morton's fork coup — Morton s Fork is a coup in contract bridge that forces an opponent to choose between letting declarer establish one or more extra tricks in the suit led, and losing the opportunity to win any trick in that suit. It takes its name from the… …   Wikipedia

  • Krutzjass — is a Swiss German card game in some ways similar to contract bridge. The name, literally translated into English, is Cross Game, a name derived from the fact that it is played between two teams or partnerships of two, where team members sit… …   Wikipedia

  • slam — slam1 verb (slams, slamming, slammed) 1》 shut or be shut forcefully and loudly.     ↘push or put somewhere with great force.     ↘(often slam into) crash or strike heavily into.     ↘put into action suddenly or forcefully: I slammed on the brakes …   English new terms dictionary

  • capot — [kə pɒt] noun (in piquet) the winning of all twelve tricks in the hand by one player, for which a bonus is awarded. verb (capots, capotting, capotted) score a capot against. Origin C17: from Fr., perh. from a dialect var. of chapoter castrate …   English new terms dictionary

  • Small Slam — Whist family The winning of twelve tricks by one side …   The official rules of card games glossary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”