Browse Definitions :
Definition

canvas fingerprinting (CPF)

Canvas fingerprinting (CPF) is a surreptitious online user tracking technique that relies on minute differences in text or images drawn on command by users’ browsers.

Canvas fingerprinting relies on standard HTML5 and JavaScript, using a website canvas feature that one might draw on or use to display graphs and charts. On some sites, this is a visible and usable canvas. Sites that use canvas fingerprinting, however, use a hidden canvas. Commands to your graphics processing unit (GPU) cause it to draw a string of text as a pixel-based image that is almost perfectly unique and individually identifying. Even completely identical hardware systems are almost always individualized through variables such as different browsers, driver versions, font settings and text smoothing settings such as anti-aliasing.

ProPublica, an independent newsroom, claims that five percent of the top 100,000 websites use canvas fingerprinting and of those, 95 percent use AddThis.com’s product. Examples of sites using canvas fingerprinting include United States and Canadian government sites, POF.com and many others.

Methods of avoiding canvas fingerprinting include using TOR and Chameleon browsers, Adblock plus, Noscript browser extension, DoNotTrackMe and just turning off JavaScript. The unfortunate aspect of most of these solutions is that they may change ones browsing experience.

This was last updated in July 2014

Continue Reading About canvas fingerprinting (CPF)

SearchCompliance
  • ISO 31000 Risk Management

    The ISO 31000 Risk Management framework is an international standard that provides businesses with guidelines and principles for ...

  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

SearchSecurity
  • Pretty Good Privacy (PGP)

    Pretty Good Privacy or PGP was a popular program used to encrypt and decrypt email over the internet, as well as authenticate ...

  • email security

    Email security is the process of ensuring the availability, integrity and authenticity of email communications by protecting ...

  • Blowfish

    Blowfish is a variable-length, symmetric, 64-bit block cipher.

SearchHealthIT
SearchDisasterRecovery
  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

SearchStorage
  • direct access

    In computer storage, direct access is the process of reading and writing data on a storage device by going directly to where the ...

  • kibi, mebi, gibi, tebi, pebi and exbi

    Kibi, mebi, gibi, tebi, pebi and exbi are binary prefix multipliers that, in 1998, were approved as a standard by the ...

  • holographic storage (holostorage)

    Holographic storage is computer storage that uses laser beams to store computer-generated data in three dimensions.

Close