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Security Glossary

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Glossaries

Term Definition
Mail bomb
An excessively large email (typically many thousands of messages) or one large message sent to a user's email account. This is done to crash the system and prevent genuine messages from being received.
Malicious app
A mobile application (app) disguised as a legitimate app that can contain viruses, worms, Trojan horses, malware, spyware, or any other items that may harm user devices or personal data. Once a malicious app is downloaded, it can wreak havoc in multiple ways including sending text messages to premium-rate numbers, taking control of the infected device, and downloading the user's contact lists. Cybercriminals distribute malicious apps through legitimate app stores like Google Play by masquerading as a legitimate app.
Malicious code
A piece of code designed to damage a system and the data it contains, gather sensitive information, gain unauthorized access, or to prevent the system from being used in its normal manner.
Malvertising
This is usually executed by hiding malicious code within relatively safe-looking online advertisements. These ads can lead a victim to unreliable content or directly infect a victim's computer with malware, which may damage a system, access sensitive information, or even control the computer through remote access.
Malware
A generic term used to describe any type of software or code specifically designed to exploit a computer or the data it contains, without consent. Malware includes viruses, Trojan horses, spyware, adware, most rootkits, and other malicious programs.
Media access control (MAC) address
A hardware identification number that is a unique code assigned to every piece of hardware that connects to the Internet. This includes Internet-capable phones, network interface cards for desktop and notebook computers, wireless access cards, and even some memory cards. The MAC address is manufactured into every network card, such as an Ethernet card or Wi-Fi card, and can't be changed.
Medical identity theft
This occurs when someone uses a person's name and sometimes other parts of their identity
Mobile browser
A web browser that is designed and optimized to display content on a mobile device. Mobile browsers are used on mobile devices to browse the Internet, just as a web browser is used on a computer.
Mobile data usage
Mobile service providers have data plans that allow users to access the Internet (including sending and receiving email, using apps and GPS) anywhere a mobile phone signal can be accessed. Data plans are based on the number of gigabytes (GBs) of data that are uploaded and downloaded from the Internet per month via a smartphone or a tablet.
Mobile malware
Software with a malicious purpose that commonly performs actions without a user's knowledge. It may be designed to disable your phone, remotely control your device, send unsolicited messages to the user's contact list, make charges to the user's phone bill, or steal valuable information. Mobile malware uses the same techniques as PC malware to infect mobile devices.
Mobile payment
An alternative payment where a consumer can use their mobile phone to make a payment, instead of using cash or credit cards. This is sometimes referred to as a mobile wallet.
Mobile phone spam
Also known as SMS spam, text spam, or mobile spamming. Mobile phone spam is unsolicited and generally unwanted commercial advertisements that are sent to a user's mobile phone by way of text messaging.
Multimedia messaging service (MMS)
A standard way to send messages that includes multimedia content to and from mobile phones. The most popular use is to send photos, but it can also be used for delivering videos, text pages, and ringtones.