| 释义 |
DictionarySeepiggybackpiggybacking
piggybacking (1)A method for passing acknowledgement frames and data frames in the same direction along a line.piggybacking (2)The practice of increasing memory capacity by solderingchips on top of other chips. The chip-enable or high addresspins would be connected to the address bus by a flying lead.Many Ohio Superboards were expanded to a massive 8K of RAMin this way.piggybacking(1) Gaining access to a restricted communications channel by using the session another user already established. Piggybacking can be defeated by logging out before walking away from a workstation or terminal or by initiating a screensaver that requires re-authentication when resuming.
Piggybacking also refers to someone allowing another person to follow right after them into a restricted area. Also known as "tailgating," this may be done on purpose by a disgruntled employee or just out of carelessness. See replay attack, hijacking and cryptojacking.
(2) Using a Wi-Fi hotspot of neighbors who have not secured their network. See Wi-Fi piggybacking and Wi-Fi hotspot.
(3) Embedding the names of popular brands or companies into the hidden meta-data of a Web page in order to rank high up on a search engine's results page. See meta tag.Piggybacking
The convincing of a consumer to add more life insurance policies to ones already purchased, often with the promise that they would be paid for with built-up values in their old policiesLegalSeeHijackingPiggybacking
PiggybackingA broker who trading stocks, bonds or commodities in a personal account following a trade just made for a customer. The broker assumes that the customer is making the trade on valuable inside information.PiggybackingThe practice in which a broker conducts a transaction on his/her own account after filling a similar order on behalf of a client. For example, if a client sells 10,000 shares and the broker owns some shares in the same company, he may piggyback by selling his own shares. A broker piggybacks when he/she believes that the client has insider information, or at least a better understanding than the broker on the market's future movements. Piggybacking should not be confused with piggy back registration, which is a different concept altogether. |