M - Definitions

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  • M

    macro virus

    A macro virus is a computer virus that "infects" a Microsoft Word or similar application and causes a sequence of actions to be performed automatically when the application is started or something else triggers it.

  • madware

    Madware is a type of aggressive advertising that affects smartphones and tablets. The name, which is a portmanteau combining the words mobile and adware, was coined by the security vendor Symantec to describe a type of intrusive advertising that currently affects Android smartphones and tablets.

  • mail bomb

    A mail bomb is the sending of a massive amount of e-mail to a specific person or system.

  • Malicious Computer Code: Glossary

    This is a glossary of terms related to malicious computer code.

  • malvertisement (malicious advertisement or malvertising)

    A malvertisement (malicious advertisement) is an advertisement on the Internet that delivers a malicious payload. 

  • malware (malicious software)

    Malware is software that is harmful to users or their computing systems. Find out about the different kinds of malware and what they can do.

  • Malware: Glossary

    This is a glossary of terms related to malware.

  • man in the browser

    Man in the browser refers to an emerging tactic used by hackers to commit financial fraud... (Continued)

  • mandatory access control (MAC)

    Mandatory access control (MAC) is a system-controlled policy restricting access to resource objects (such as data files, devices, systems, etc.) based on the level of authorization or clearance of the accessing entity, be it person, process, or device.

  • masquerade

    In general, a masquerade is a disguise.

  • MD2

    MD2 is an earlier, 8-bit version of MD5, an algorithm used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length) that is claimed to be as unique to that specific data as a fingerprint is to the specific individual.

  • MD4

    MD4 is an earlier version of MD5, an algorithm used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length) that is claimed to be as unique to that specific data as a fingerprint is to the specific individual.

  • MD5

    The MD5 hashing algorithm is a one-way cryptographic function that accepts a message of any length as input and returns as output a fixed-length digest value to be used for authenticating the original message.

  • Melissa virus

    Melissa is a fast-spreading macro virus that is distributed as an e-mail attachment that, when opened, disables a number of safeguards in Word 97 or Word 2000, and, if the user has the Microsoft Outlook e-mail program, causes the virus to be resent to the first 50 people in each of the user's address books.

  • memory-scraping malware

    Memory-scraping malware is a type of malware that helps hackers to find personal data. It examines memory to search for sensitive data that is not available through other processes.

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