Norton Insight

Norton Insight whitelists files based on reputation. Norton-branded antivirus software then lifts the data to skip known files during virus scans. Symantec claims quicker scans and more accurate detection with the use of the technology.


Insight was codenamed Mr. Clean . Its initial is to help users determine which programs from the Internet are safe to install. Mr. Clean would provide a risk assessment to discern between safe and malicious files. [1] However, its goal was later changed to make more efficient scans; instead of scanning every file, known files are skipped, cutting scanning times. [2]

Basic introduction & usage

Norton Community Watch, a voluntary and anonymous service, allows a user to Norton product to forward information to Symantec servers. [3] Among the data collected are the processes running and their SHA256 values. A reappearing hash value and its corresponding file are whitelisted, and Norton Insight checks the processes on a user’s computer against the whitelist. Matching processes are excluded from scanning.

When a process is “trusted”, it has been deemed safe and excluded from risk scanning. There are two trust levels; “standard” and “high”. The third option is to disable Norton Insight. In standard trust, processes appearing in the majority of participants’ computers are deemed safe. High trust, in addition, excludes digitally signed files from scanning.

Tamper protection

Norton analyzes the NTFS file system on startup, and if unaccounted changes are found, trust values ​​of the processes on the system are revoked.

In the case of a mistake, a revocation mechanism was implemented, where clients receive a list of revoked SHA256 values ​​via LiveUpdate. If the client has a file matching is SHA256 and is currently trusting that file, all trust is revoked, and the file is once again scanned. [4] Norton File Insight was released in Norton 2010 products.

Norton file / download insight

The Norton Download Insight feature, provides insight of the files that you download and install in your computer. While the File Insight gives you the information you need, you need a copy of the clipboard.

It supports the Norton Download Insight Feature, and assizes a reputation about the file. The File Insight provides the following information:

  • The file type and the file name
  • The date on which was installed
  • The date on which was last used
  • The lineage details of the file
  • The actions that the file performs on your system
  • The level at which the file uses the resources of your computer
  • The performance impact that it has
  • The stability of the file for the specific operating system
  • The version of the file
  • Who developed the file?


Upon release the Download Insight program Would erroneously flags has downloaded file as HAVING no Digital Signature and no version number and therefore a potential threat. [5]


The Tech Herald, which tested Norton Internet Security 2009 , found Insight affected system performance while whitelisting files. [6] After scans, the files scanned and scanned each file. The average amount of time was 561 megabyte folder with 21,816 clean files was 0: 00: 24: 41. Despite the oddities, Norton Internet Security 2009 was faster than subsequent products. [7]

See also

  • SONAR 2


  1. Jump up^ “Symantec Research Labs to offer 3 new tools”, The Hindu Business Line, March 19, 2008, accessed July 10, 2009.
  2. Jump up^ Edwards, Cliff. “Security that will not slow down your PC”,ZDNetAsia, August 12, 2008, accessed July 10, 2009.
  3. Jump up^ “Norton Community Privacy Watch”,Symantec Corporation, accessed July 10, 2009.
  4. Jump up^ McAllister, Neil. “Norton 2009 to Speed ​​Up Malware Screening”,PCWorld, July 15, 2008, accessed July 10, 2009.
  5. Jump up^ “Norton Internet Security Can not Detect Frap’s Digital Signature” . Norton Users Discussion Forum . Symantec . Retrieved 2009-06-25 .
  6. Jump up^ Ragan, Steve. “Review: Norton Internet Security 2009,”The Tech Herald, October 2, 2008, accessed July 25, 2009.
  7. Jump up^ Ragan, Steve. “Review: Norton Internet Security 2009,”The Tech Herald, October 2, 2008, accessed July 25, 2009.

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