- Present participle of spoof.
spoofing - Computer Definition
- The process of deception by which an individual or system alters its identity or creates additional identities, thereby causing another person or system to act incorrectly.
- The process of deception by which an unauthorized person causes a transmission or message to appear to come from an authorized user in order to gain privileged access to computer or network resources. IP spoofing, an integral element of many types of network attacks, involves creating TCP/IP packets that use false addresses, perhaps stolen from others.
- The process of deception by which a system alters its identity or creates additional identities, to impersonate another device in a communications session or transaction. Spoofing may be desirable, as when a router spoofs a fax protocol to ensure delivery over a connection with high latency. See also fax spoofing.
The cyberspace appropriation of an authentic user’s identity by nonauthentic users, causing fraud or attempted fraud, in some cases, and causing critical infrastructure breakdowns in other cases. Spoofing can also target nonuser-based entities. For instance, an IP address can be spoofed to appropriate the identity of a server and not a human (user).
Schell, B.H. and Martin, C. Contemporary World Issues Series: Cybercrime: A Reference Handbook. Santa Barbara, CA: ABC-CLIO, 2004.
(1) Faking the sending address of a transmission in order to gain illegal entry into a secure system. See e-mail spoofing.
(2) Creating fake responses or signals in order to keep a session active and prevent timeouts. For example, mainframes continuously poll their terminals. If the lines to remote terminals are temporarily suspended because there is no traffic, a local device spoofs the host with "I'm still here" responses. See how to spoof your technical friend.
spoofing - Investment & Finance Definition
A fraudulent trading practice that occurs when a trader who owns a particular stock places a large buy order through electronic trading systems and then cancels it within seconds. The order causes the market to shoot higher, which makes it appear that there is high demand for the stock. Spoofers exploit the SEC’s Limit Order Display Rule, which requires that market makers display the full size of their customer’s limit orders and the desired prices. Customers place limit orders with brokers in order to specify the acceptable price ranges for buying or selling a stock.