Autonomous code that propagates across a network.
A worm is a self-replicating, self-contained software program that does not need to be part of another program to propagate. A virus, in contrast, attaches itself to and becomes part of another executable program. Worms as well as viruses typically contain some kind of malicious payload besides the propagation and infection mechanism.
On February 3,2005,Sophos,Inc., a company providing virus detection and other security tools, warned that a version of the Bobax-H worm, hidden within Saddam Hussein photos
showing him deceased, invaded computers and carried message warnings such as “Saddam Hussein:Attempted Escape.Shot Dead.” Other versions of the worm had pictures of an allegedly captured Osama Bin Laden. If activated, the payload had the same effect as the Sasser worm. Security experts worldwide have been exploring various ways of stopping worms in their tracks. In April 2005, Professor Shigang Chen and Professor Sanjay Ranka at the University of Florida said they designed an Internet worm early-warning system to detect the initial sign of a malwareattack. Professors Chen and Ranka said that their suggested early-warning system monitors a “used” address space and relies on RESET packets to find the scan sources. Their research paper focuses on TCP-focused worms and details a means of avoiding so-called “false positives” by viewing reply traffic from targets instead of monitoring the SYN packets to track half-open connections.
A program that propagates itself across computers, usually by creating copies of itself in each computer’s memory. A worm might duplicate itself in one computer so often that it causes the computer to crash. Sometimes written in separate segments, a worm is introduced surreptitiously into a host system either as a prank or with the intent of damaging or destroying information. See also bacterium, Internet Worm, Trojan horse, virus.
ETYM Old Eng. worm, wurm, AS. wyrm.
Any of various elongated limbless invertebrates belonging to several phyla. Worms include the flatworms, such as flukes and tapeworms; the roundworms or nematodes, such as the eelworm and the hookworm; the marine ribbon worms or nemerteans; and the segmented worms or annelids.
In 1979, giant sea worms about 3 m/10 ft long, living within tubes created by their own excretions, were discovered in hydrothermal vents 2,450 m/8,000 ft beneath the Pacific NE of the Galápagos Islands.
1. Any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida, Chaetognatha, Nematoda, Nemertea and Platyhelminthes; also many insect larvae.
2. Has a nasty or unethical character undeserving of respect; SYN. louse, insect, dirt ball.
3. Threads gear with the teeth of a worm wheel or rack.
Acronym for write once, read many. A type of optical disc that can be read and reread but cannot be altered after it has been recorded. WORMs are high-capacity storage devices. Because they cannot be erased and rerecorded, they are suited to storing archives and other large bodies of unchanging information. See also compact disc.
(acronym for write once read many times) In computing, a storage device, similar to CD-ROM. The computer can write to the disc directly, but cannot later erase or overwrite the same area. WORMs are mainly used for archiving and backup copies.
1. To proceed or make (one's way) insidiously or deviously
2. To insinuate or introduce (oneself) by devious or subtle means; to cause to move or proceed in or as if in the manner of a worm
3. To wind rope or yarn spirally round and between the strands of (a cable or rope) before serving
4. To obtain or extract by artful or insidious questioning or by pleading, asking, or persuading — usually used with out of
5. To treat (an animal) with a drug to destroy or expel parasitic worms