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The Hacker News - Cybersecurity News and Analysis: HTML5 Canvas Fingerprinting

Firefox 58 to Block Canvas Browser Fingerprinting By Default to Stop Online Tracking

Firefox 58 to Block Canvas Browser Fingerprinting By Default to Stop Online Tracking

October 31, 2017Mohit Kumar
Do you know? Thousands of websites use HTML5 Canvas —a method supported by all major browsers that allow websites to dynamically draw graphics on web pages—to track and potentially identify users across the websites by secretly fingerprinting their web browsers. Over three years ago, the concern surrounding browser fingerprinting was highlighted by computer security experts from Princeton University and KU Leuven University in Belgium. In 2014, the researchers demonstrated how browser's native Canvas element can be used to draw unique images to assign each user's device a number (a fingerprint) that uniquely identifies them. These fingerprints are then used to detect when that specific user visits affiliated websites and create a profile of the user's web browsing habits, which is then shared among advertising partners for targeted advertisements. Since then many third-party plugins and add-ons (ex. Canvas Defender ) emerged online to help users identify and block
HTML5 Canvas Fingerprint — Widely Used Unstoppable Web Tracking Technology

HTML5 Canvas Fingerprint — Widely Used Unstoppable Web Tracking Technology

July 23, 2014Mohit Kumar
Till Now we have seen many traditional way of tracking web users, such as using cookies that get saved on user's system may not be available forever to many companies, but a new method of tracking users has emerged that worked without the use of cookies. From last two years, many websites and tracking softwares are utilizing the fingerprinting power of HTML5 Canvas, which is a HTML element used to dynamically generated image in your browser's web page. EACH BROWSER GENERATES DIFFERENT IMAGE Basically, web browsers uses different image processing engines, export options, compression level, so each computer draws the image slightly differently, the images can be used to assign each user's device a number (a fingerprint) that uniquely identifies it i.e. Browser fingerprinting . According to a research paper published by computer security experts from Princeton University and KU Leuven University in Belgium, the Canvas fingerprint tracking has made it more difficult for
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