Iyadoo Kukiyada iyo habab kale loo isticmaalay si loola socdo isticmaalayaasha khadka in muddo ah hadda. Nidaam cusub oo raadraac ah ayaa la sameeyay dhawaan 2014. Habkani wuxuu isticmaalaa HTML 5 Canvas Element si uu ula socdo booqdayaasha, waxaana loo yaqaannaa Canvas Fingerprint^{(Canvas Fingerprinting)} . Laakin maadaama sirnimadu ay tahay tan ugu muhiimsan amniga maalmahan, waxaad u baahan tahay inaad hubiso in browserkaagu uu yahay caddaynta sawirka faraha.

Waxaan mar hore ka hadalnay sida loo xannibo faraha canvas ee Firefox . Maqaalkan, waxaanu si faahfaahsan uga wada hadalnay samaynta faraha Canvas^{(Canvas Fingerprinting)} oo aanu daboolnay fidinta Chrome ka ee bilaashka ah 'Canvas Defender' kaas oo kuu ogolaanaya inaad ilaaliso faraha qalabkaaga.

Waa maxay Faraha Canvas

Canvas Fingerprinting waa farsamo diiwaangeliya faraha kombiyuutarkaaga iyadoo lagu salaynayo qalabka garaafyadaada. Sawirada farahaan waxaa wadaagi kara shabakadaha si dhab ah ula socda isticmaalkaaga internetka. Sawiradan faraha ama calaamadaha dhijitaalka ah waxaa si weyn u isticmaala shirkadaha xayaysiisyada si ay kuu quudiyaan xayaysiisyada gaarka ah oo ay ula socdaan dhaqankaaga.

Markaad booqato mareegaha leh faraha shiraac ee karti u leh, barowsarkaaga waxaa lagu farayaa inuu sawiro garaafyo qarsoon. Hadda garaafyadan la sameeyay waxay ka koobnaan karaan macluumaadka ku saabsan nooca nidaamkaaga, OS, GPU , Darawalka^{(Graphics Driver)} garaafyada . Dhammaan macluumaadkan oo lagu daray macluumaad kale ayaa dhalinaya farahaaga gaarka ah. Inkasta oo, kala-soociddu aysan ahayn mid aad u fiican, laakiin marka lagu daro hababka kale ee faraha ee la rabo in la gaaro qiyaasta entropy iyo mid gaar ah ayaa la gaari karaa.

Akhriso^(Read) : Daabacaadda Farta Browser-ka iyo Qarsoodinimada Intarneedka^{(Browser Fingerprinting and Online Privacy)} .

Ka hortag Canvas Faraha^{(Prevent Canvas Fingerprinting)} ee Google Chrome

Isticmaalka kordhinta loo yaqaan ' Canvas Defender ' mid ayaa ka hortagi karta Canvas Fingerprint^{(Canvas Fingerprinting)} ee browserkaaga. Waxyaabaha gaarka ah ee ku saabsan kordhintan ayaa ah in halkii gabi ahaanba laga joojin lahaa Canvas Fingerprinting ay qarinayso farahaagii asalka ahaa oo ay ku beddeshay xogta xashiishka.

Si aad u aragto qalabkan oo shaqaynaya, waxaad aadi kartaa browserleaks.com/canvas oo hubi kala duwanaanshaha hadda iyo saxeexa biraawsarkaaga. Hadda ku rakib fidinta oo ku dhufo astaanta difaaca Canvas^{(Canvas Defender)} oo dhagsii ' Abuur Buuq Cusub^{(Generate New Noise)} '. Dib u cusboonaysii bogga si aad u aragto isbeddelada farahaaga.

Waxaa lagu talinayaa in la sameeyo faraha cusub waqti ka waqti si aqoonsigaaga mar walba loo ilaaliyo. Sidoo kale, kordhintu waxay ku ogeysiin kartaa mar kasta oo boggu isku dayo inuu aqoonsigaga ka helo Canvas . Ogeysiisyadani waxay noqon karaan kuwo dhibsado dhawaan, mana jirto wax ikhtiyaar ah oo lagu joojin karo iyaga hadda.

Waxaa intaa dheer, qalabku wuxuu u shaqayn karaa labadaba qaab caadi ah iyo qaab qarsoodi ah wuxuuna si buuxda kaaga ilaalin karaa faraha. Xitaa waxaad sii haysan kartaa liis cad oo loogu talagalay shabakadaha aad rabto inaad si caadi ah ugu shaqeyso farahaaga asalka ah. Sidoo kale, waxaad dejin kartaa muddo u dhexaysa ka dib markii faraha si toos ah loo beddeli doono. Waxay leedahay doorashooyin kala duwan oo kala duwan oo ka bilaabmaya 5 daqiiqo ilaa toddobaad.

Difaaca Canvas^{(Canvas Defender)} waa inuu lahaado kordhinta Chrome . Waxay si aamusnaan ah kaaga ilaalin kartaa daabacaadda faraha Canvas^{(Canvas Fingerprinting)} iyadoo soo saaraysa saxiix been ah. Si ka duwan codsiyada kale ee xannibaadda faraha, kordhintan gabi ahaanba kama xannibi doonto faraha browserkaaga. Joojinta faraha ayaa ah tilmaame kale oo loogu talagalay mareegaha iyo in aad rakibtay software xannibaya. Markaa halkii aad ka joojin lahayd, kordhintan waxay qarin kartaa aqoonsigaaga si buuxda oo badbaado leh.

Block Canvas Fingerprinting in Chrome with Canvas Defender

While Cookіes and other meаns have been used to track online υsers for quite a time now. A new trackіng mechanism was developed recently in 2014. This mechanism uses the HTML 5 Canvas Element to track visitors, and it is сalled Canvas Fingerprinting. But since privacy is the most important security aspect these days, you need to make sure that your browser is canvas fingerprinting proof.

We’ve already talked of how to block canvas Fingerprinting in Firefox. In this post, we’ve discussed Canvas Fingerprinting in detail and covered a free Chrome extension ‘Canvas Defender’ that lets you protect your device’s fingerprint.

What is Canvas Fingerprinting

Canvas Fingerprinting is a technique that records your computer’s fingerprint based upon on your graphics hardware. These fingerprints can be shared by websites essentially tracking your usage on the internet. These fingerprints or digital tokens are widely used by advertising companies to feed you personalized advertisements and track your behavior.

While you visit a website with canvas fingerprinting enabled, your browser is instructed to draw a hidden graphics. Now this rendered graphics can contain information about the type of your system, OS, GPU, Graphics Driver. All these details combined with some other information generates your unique fingerprint. Although, the uniqueness is not so good, but when it is combined with other fingerprint methods the desired amount of entropy and uniqueness can be achieved.

Read: Browser Fingerprinting and Online Privacy.

Prevent Canvas Fingerprinting on Google Chrome

Using an extension called ‘Canvas Defender’ one can prevent Canvas Fingerprinting on your browser. The thing that is special about this extension is that instead of completely blocking Canvas Fingerprinting it hides your original fingerprint and replaces it with spoof data.

To see this tool in action you can go to, browserleaks.com/canvas and check current uniqueness and signature of your browser. Now install the extension and hit the Canvas Defender icon and click ‘Generate New Noise’. Refresh the page to see the changes in your fingerprint.

It is recommended to generate a new fingerprint from time to time so that your identity is always protected. Also, the extension can notify you whenever a web page tries to get your identity from the Canvas. These notifications can get annoying soon, and there is no option to disable them for now.

Moreover, the tool can work both in normal and incognito mode and can completely guard you against fingerprinting. You can even maintain a whitelist for websites that you want to work normally with your original fingerprint. Also, you can setup a time interval after which the fingerprint will automatically be changed. It has a wide variety of options starting from 5 minutes to a week.

Canvas Defender is a must have Chrome extension. It can silently protect you from Canvas Fingerprinting by generating a false signature. Unlike other fingerprint blocking applications, this extension will not completely block fingerprints on your browser. Blocking fingerprints is another identifier for websites and that you’ve installed some blocking software. So instead of blocking, this extension can hide your identity in a completely safe manner.

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