Messaging threats Definitions

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  • A

    anonymous email

    Anonymous e-mail is e-mail that has been directed to a recipient through a third-party server that does not identify the originator of the message.

  • C

    CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart)

    A CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart) is a type of challenge-response system designed to differentiate humans from robotic software programs.

  • challenge-response system

    A challenge-response system is a program that replies to an e-mail message from an unknown sender by subjecting the sender to a test (called a CAPTCHA) designed to differentiate humans from automated senders.

  • cloaking

    Cloaking is the masking of the sender's name and address in an e-mail note or distribution.

  • content filtering (information filtering)

    On the Internet, content filtering (also known as information filtering) is the use of a program to screen and exclude from access or availability Web pages or e-mail that is deemed objectionable.

  • crimeware

    Crimeware is any computer program or set of programs designed expressly to facilitate illegal activity online.

  • D

    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 the malware distributor.

  • DomainKeys

    DomainKeys is an anti-spam software application in development at Yahoo that uses a form of public key cryptography to authenticate the sender's domain.

  • E

    email spam

    Email spam, or junk email, is unsolicited bulk messages sent through email with commercial, fraudulent or malicious intent.

  • email spoofing

    Email spoofing is the forgery of an email header so that the message appears to have originated from someone or somewhere other than the actual source.

  • I

    identity theft

    Identity theft, also known as identity fraud, is a crime in which an imposter obtains key pieces of personally identifiable information, such as Social Security or driver's license numbers, in order to impersonate someone else.

  • J

    Joe job

    A Joe job is an e-mail spoofing exploit in which someone sends out huge volumes of spam that appear to be from someone other than the actual source.

  • M

    mail bomb

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

  • 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.

  • munging

    Munging is the deliberate alteration of an e-mail address on a Web page to hide the address from spambot programs that scour the Internet for e-mail addresses.

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