Botnet

AAA

DEFINITION of 'Botnet'

An combination of "robot" and "network," botnet is a group of programs that work together by communicating over the Internet. The word has negative connotations: although botnets can be used perform innocuous tasks, they are often used to send spam email, steal money from bank accounts or perform denial-of-service attacks.

INVESTOPEDIA EXPLAINS 'Botnet'

Illegal botnets that do the most damage are made up of hundreds of thousands of computers whose legitimate users don't even realize that malware (malicious software) had been installed on their machines, turning them into "bots" that can be controlled by the botnet's operator. Botnets exploit weaknesses in browser security, but often, computer users inadvertently download malware themselves when they click on deceptive pop-ups while browsing. Malware can also arrive via a "Trojan horse," such as an email attachment. Users should always keep their browser security up to date, avoid clicking on suspicious links and pop-ups, and avoid opening attachments that they suspect may contain malware. Botnets are able to make it look as if the attachment came from one of the user's contacts. Check with the sender before opening an unexpected attachment. The sender is probably unaware that their computer has become recruited into a botnet and is sending spam. (For related reading, see: Does Your Portfolio Need A Does Of Cybersecurity?)

RELATED TERMS
  1. Banker Trojan

    A malicious computer program designed to gain access to confidential ...
  2. Bitcoin Wallet

    A Bitcoin wallet is a software program where Bitcoins are stored. ...
  3. EDGAR Public Dissemination Service ...

    A privatized online service that provides the public with the ...
  4. Internet Service Provider - ISP

    A company that provides access to the Internet to subscriber-based ...
Related Articles
  1. Identity Theft Protection Services: ...
    Personal Finance

    Identity Theft Protection Services: ...

  2. Looking Out For Your Finances As A Renter
    Home & Auto

    Looking Out For Your Finances As A Renter

  3. Identity Theft: How Much Should You ...
    Personal Finance

    Identity Theft: How Much Should You ...

  4. How Verizon Built A Customer Base Of ...
    Stock Analysis

    How Verizon Built A Customer Base Of ...

comments powered by Disqus
Hot Definitions
  1. Stop-Limit Order

    An order placed with a broker that combines the features of stop order with those of a limit order. A stop-limit order will ...
  2. Pareto Principle

    A principle, named after economist Vilfredo Pareto, that specifies an unequal relationship between inputs and outputs. The ...
  3. Pareto Principle

    A principle, named after economist Vilfredo Pareto, that specifies an unequal relationship between inputs and outputs. The ...
  4. Budget Deficit

    A status of financial health in which expenditures exceed revenue. The term "budget deficit" is most commonly used to refer ...
  5. Floating Exchange Rate

    A country's exchange rate regime where its currency is set by the foreign-exchange market through supply and demand for that ...
  6. Underwriting

    1. The process by which investment bankers raise investment capital from investors on behalf of corporations and governments ...
Trading Center