The Glossary provides descriptions of important terms and concepts used in this document. For information on security threats, see:

For information about how the Trend Micro Smart Protection Network protects you, see:



Activation Code

A numerical code required to enable scanning and product updates. You can activate your product during installation or anytime thereafter. If you do not have the Activation Code(s), use the Registration Key that came with your product to register on the Trend Micro website and receive the Activation Code(s).


Connected to the Trend Micro update website, ActiveUpdate provides updated downloads of components such as the virus pattern files, scan engines, and program files. ActiveUpdate is a function common to many Trend Micro products.


The person who configures settings and monitors the WFBS-SVC network.


The WFBS-SVC program that runs on the client.


To remove virus code from a file or message.


Cleanup detects and removes applications or processes installed by Trojans, worms, and spyware/grayware. It also repairs modified files.


Clients are Windows computers, Macs, and Android devices where an Agent is installed.


Selecting options for how your Trend Micro product will function, for example, selecting whether to quarantine or delete a virus-infected email message.

Conventional Scan

A local scan engine on the client scans the client.

End User License Agreement (EULA)

An End User License Agreement, or EULA, is a legal contract between a software publisher and the software user. It typically outlines restrictions on the side of the user, who can refuse to enter into the agreement by not clicking "I accept". Many users inadvertently agree to the installation of spyware/grayware and other types of grayware into their devices when they click "I accept" on EULA prompts displayed during the installation of certain free software.

False Positive

A false positive occurs when a website, URL or "infected" file is incorrectly determined by filtering software to be of an unwanted type. For example, a legitimate email between colleagues may be detected as spam if a job-seeking filter does not distinguish between resume (to start again) and résumé (a summary of work experience).

Live Status

The main screen or dashboard of the Web Console. Live Status gives you an at-a-glance security status for Outbreak Defense, Antivirus, Anti-spyware, and Network Viruses.


A malware is a program that performs unexpected or unauthorized actions. It is a general term used to refer to viruses, Trojans, and worms. Malware, depending on their type, may or may not include replicating and non-replicating malicious code.

Pattern matching

Since each virus contains a unique "signature" or string of telltale characters that distinguish it from any other code, the virus experts at Trend Micro capture inert snippets of this code in the pattern file. The engine then compares certain parts of each scanned file to the pattern in the virus pattern file, looking for a match. When the engine detects a match, a virus has been detected and an email notification is sent to the Administrator.

Privileges (agent privileges)

From the web console, Administrators can set privileges for the Agents. End users can then set the Agents to scan their clients according to the privileges you allowed. Use agent privileges to enforce a uniform antivirus policy throughout your organization.

Registration Key

A numerical code required to register with Trend Micro and obtain an Activation Code.

Scan Server

A server that helps scan clients so clients do not have to complete the whole scanning process themselves.

Smart Scan

A Scan Server helps scan the client.


TrendLabs is Trend Micro's global network of antivirus research and product support centers that provide 24 x 7 coverage to Trend Micro customers around the world.

True File Type

Files can be renamed to disguise their actual type. When set to IntelliScan, the Client/Server Security Agent will confirm a file's true type by opening the file header and checking its internally registered data type.

Virus Pattern

The Trend Micro Scan Engine uses a data file called the virus pattern file. The scan engine works together with the virus pattern file to perform the first level of detection, using a process called pattern matching, to identify viruses and other Internet threats. New virus pattern files are created and released several times a week, and any time a particularly threat is discovered.

Web console

The web console is a centralized web-based management console. You use it to configure the settings of Agents which protect all your devices.

Worry-Free Services Server

The Worry-Free Services Server communicates with Agents installed on clients. The Worry-Free Services Server also hosts the web console, the centralized web-based management console for the entire Worry-Free Services solution. It is hosted at Trend data centers.