File Anti-Virus: security levels - Kaspersky Lab

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Kaspersky PURE 2.0 Scan methods of File Anti-Virus By default, File Anti-Virus scans objects using signature analysis (bases with the description of known threats and their disinfection methods). The component compares the object under scan with the records in the base and defines whether the object is malicious. Since new malicious objects appear daily, there is always some malware which are not described in the databases, and which can only be detected using heuristic analysis. This method presumes the analysis of the actions an object performs within the system. If its actions are typical of malicious objects, the object is likely to be classed as malicious or suspicious. In order to configure heuristic analysis, perform the following actions: 1. In the File Anti-Virus window go to the Performance tab. 2. In the Heuristic Analyzer section specify the detail level 1 for scan moving the horizontal slider to the necessary position. 3. Click the OK button. Optimization of files scan To reduce the scan time and accelerate the application operation, you can configure scan of only new and recently changed files, which were modified after the previous scan. For this, perform the following actions: 1. In the File Anti-Virus window go to the Performance tab. 2. In the Scan optimization section check the Scan only new and changed files box. 1 The higher the detail level is, the more resources and time are needed for scan, however the more thorough the analysis will be. 7 | 17
Kaspersky PURE 2.0 3. Click the OK button. Setting scan of compound files A compound file is structured storage for several other files. Examples of compound files are archives and OLE-objects. A common method of concealing viruses is to embed them into compound files (archives). To detect viruses that are hidden in this way a compound file should be unpacked, which can significantly lower the scan speed. To enable scan of archives, perform the following actions: 1. In the File Anti-Virus window go to the Performance tab. 2. In the Scan of compound files section, check the Scan archives box. 8 | 17
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File Anti-Virus: security levels - Kaspersky Lab

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