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  • W

    computer worm

    A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining active on infected systems.

  • walled garden

    On the Internet, a walled garden is an environment that controls the user's access to Web content and services.

  • WAPI (WLAN Authentication and Privacy Infrastructure)

    WAPI (WLAN Authentication and Privacy Infrastructure) is the wireless local area network (WLAN) standard officially supported by the Chinese state government.

  • war dialer

    A war dialer is a computer program used to identify the phone numbers that can successfully make a connection with a computer modem.

  • watering hole attack

    A watering hole attack targets a specific group of users by infecting websites group members like to visit. The name watering hole attack is inspired by predators in the natural world who lurk near watering holes, looking for opportunities to attack desired prey.

  • Web application firewall (WAF)

    A Web application firewall (WAF) is a firewall that monitors, filters or blocks traffic to and from a Web application. WAFs are especially useful to companies that provide products or services over the Internet.

  • Web filter

    A Web filter is a program that can screen an incoming Web page to determine whether some or all of it should not be displayed to the user.

  • web server security

    Web server security is the protection of information assets that can be accessed from a Web server.

  • whack-a-mole

    Whack-a-mole is the pursuit of a particular person known to have sent spam.

  • whaling

    Whaling is a type of fraud that targets high-profile end users such as C-level corporate executives, politicians and celebrities.

  • white hat

    White hat describes a hacker (or, if you prefer, cracker) who identifies a security weakness in a computer system or network but, instead of taking malicious advantage of it, exposes the weakness in a way that will allow the system's owners to fix the breach before it can be taken advantage by others (such as black hat hackers.

  • Wi-Fi Sense

    Windows Wi-Fi Sense allows Windows 10 users to get Internet access from public hotspots and private wireless local area networks (WLANs) that have been shared by friends. Although Wi-Fi Sense is enabled by default in all editions of Windows 10, the feature can be turned off by users and access can be disabled by wireless network administrators.

  • wildcard certificate

    A wildcard certificate is a digital certificate that is applied to a domain and all its subdomains.

  • Wired Equivalent Privacy (WEP)

    Wired Equivalent Privacy (WEP) is a security protocol, specified in the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b, that is designed to provide a wireless local area network (WLAN) with a level of security and privacy comparable to what is usually expected of a wired LAN. A wired local area network (LAN) is generally protected by physical security mechanisms (controlled access to a building, for example) that are effective for a controlled physical environment, but may be ineffective for WLANs because radio waves are not necessarily bound by the walls containing the network.

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