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In the context of computer science and digital communications, "piggybacking" refers to a situation where an unauthorized party gains access to some system in connection with an authorized party. This can happen in several ways, including piggybacking on public wireless networks, and piggybacking into a password-protected system.
Techopedia Explains Piggybacking
One primary type of piggybacking deals with a user session. If an authorized user enters a password and initiates the use session, and then steps away from the workstation, an unauthorized party can get access. This is a form of piggybacking. In the physical world, it is similar to the process of one person using a transit card to get through a turnstile and another person slipping in behind them to use the same ticket.
Another form of piggybacking has to do with wireless networks. Unsecured wireless networks can be piggybacked, where an unauthorized party uses the connection to join the global internet. This form of piggybacking can be corrected with encryption and passkey authentication.
In general, piggybacking involves the unauthorized use of resources, whether that is wireless access, a user session, or even processing power. In a process called cryptojacking, unauthorized parties use device power to mine for cryptocoins. This is a form of piggybacking that is getting a lot of attention in the tech industry and in technology journalism.
