Botnet takedowns: A dramatic defense

Malware, Viruses, Trojans and Spyware

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  • Quiz: Malware

    So many kinds of malware in the wild! From garden variety worms to hybrid viruses, you've got to watch out for Trojan horses, spyware, and social engineering -- and don't forget to secure that back door! The first line of defense is knowledge, unders...  Quiz

  • advanced persistent threat (APT)

    An advanced persistent threat is a network attack in which an unauthorized person gains access to a network and stays there undetected for a long period of time.  Definition

  • domain rotation

    Domain rotation is a technique use by malware distributors to drive traffic from multiple domains to a single IP address that is controlled by the distributor. The goal of domain rotation is to make it harder for a network administrator to blacklist ...  Definition

  • metamorphic and polymorphic malware

    Metamorphic and polymorphic malware are two categories of malicious programs that have the ability to change their code as they propagate.  Definition

  • bot worm

    A bot worm is a self-replicating malware program that resides in current memory, turns infected computers into zombies (or bots) and transmits itself to other computers. A bot worm may be created with the ultimate intention of creating a botnet that ...  Definition

  • cyberterrorism

    According to the U.S. Federal Bureau of Investigation, cyberterrorism is any "premeditated, politically motivated attack against information, computer systems, computer programs, and data which results in violence against non-combatant targets by sub...  Definition

  • I-SPY Act -- Internet Spyware Prevention Act of 2005 (H.R. 744)

    The I-SPY Act, formally known as the Internet Spyware Prevention Act of 2005 (H.R. 744), is a bill in the U.S. Congress that would criminalize the unauthorized use of spyware, phishing, and other methods of using the Internet to obtain sensitive pers...  Definition

  • government Trojan

    A government Trojan is spyware installed on a computer or network by a law enforcement agency for the purpose of capturing information relevant to a criminal investigation. Government Trojans represent a step in turning the tables on cybercriminals b...  Definition

  • RAT (remote access Trojan)

    A remote access Trojan (RAT) is a malware program that gives an intruder administrative control over a target computer. RATs are usually downloaded invisibly with a user-requested program -- such as a game -- or sent as an email attachment. Once the ...  Definition

  • hybrid virus/worm

    A hybrid virus/worm is malicious code that combines characteristics of both those types of malware, typically featuring the virus' ability to alter program code with the worm's ability to reside in live memory and to propagate without any action on t...  Definition

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