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Security Glossary

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Term Definition
In the wild (ITW)
A virus is in the wild (ITW) if it is verified as having caused an infection outside a laboratory situation. Most viruses are in the wild and differ only in prevalence.
This term refers to the condition of a file after a virus, spyware, or malware has inserted malicious code into it. Computer systems are infected if a virus or Trojan is installed and running on that system. Static malware, such as viruses and Trojans with entirely malicious code, is also said to be infected. If a potentially unwanted program is installed on a system, the system is not considered infected, even though there may be other consequences.
Infection is the action a virus carries out when it enters a computer system or storage device.
Information harvesters
People who supply stolen data but do not necessarily use it to commit fraud. The information obtained by harvesters is sold to criminal networks that trade the information in Internet back alleys.
International Mobile Equipment Identity (IMEI)
A number 15 or 17 digits in length that is unique to each mobile phone and tablet. It is used to identify users on the Global System for Mobile Communications (GSM) and the Universal Mobile Telecommunications System (UMTS). It is usually found printed inside the battery compartment of the phone. If a mobile phone is lost or stolen, the owner can call the network provider and instruct them to blacklist the phone based on the IMEI number and make it useless on the network.
International Mobile Subscriber Identity (IMSI)
A unique identification associated with all Global System for Mobile Communications (GSM) and Universal Mobile Telecommunications System (UMTS) network mobile phone users. The IMSI is a unique number identifying a GSM subscriber stored inside the subscriber identity module (SIM).
Internet Protocol (IP) address
An IP address is a unique numerical label assigned to a device, such as a computer or other device on a network, including the Internet. IP addresses allow computers, routers, printers, and other devices to identify one another to communicate.
Apple's brand name for its mobile operating system.