In the post we summarize how to detect the headless Chrome browser and how to bypass the detection. The headless browser testing should be a very important part of todays web 2.0. If we look at some of the site's JS, we find them to checking on many fields of a browser. They are similar to those collected by fingerprintjs2.
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So in this post we consider most of them and show both how to detect the headless browser by those attributes and how to bypass that detection by spoofing them.
See the test results of disguising the browser automation for both Selenium and Puppeteer extra.
- userAgent
UA can be said to be the most basic of the field to spoof in a headless browser. Bird of the black death mac os. Yet simply modifying and spoofing the UA will not work. You need both UA and some of the fields such as the navigator.platform to modify too. Of course, a simple UA tries to mimic the desktop browser.
Detection
Through the navigator.userAgent
one gets UA to identify whether browser is a crawler.
Bypass detection
You can modify the properties by the following:
- webdriver
https://pi-software.mystrikingly.com/blog/multidimensional-chess-mac-os. The webdriver read-only property of the navigator interface indicates whether the user agent is controlled by automation
Detection
The desktop Chrome browser returns navigator.webdriver
as undefined. One can be detect by: !!navigator.webdriver
Bypass detection
Or by executing: Juegos king gratis.
delete navigator.proto.webdriver
Instead of the monitoring whether navigator.webdriver is undefined, one may simply check it through !!navigator.webdriver
.
- language
Different browsers support for the language property is different; Chrome is only for navigator.language reference
Detection
navigator.language || navigator.userLanguage || navigator.browserLanguage || navigator.systemLanguage
if there is one.
Bypass detection
- colorDepth
window.screen.colorDepth
of the screen color depth, is how to collect fingerprints when used. Both headless browser and a desktop browser have generally the same value in this field.
- deviceMemory
The read-only attribute, it returns the approximate machine memory in gigabytes. This value is an approximation of a power of 2 divided by 1024, rounding off to the decimal point. Yet this is just an experimental feature, not all browsers support it. It will be used during fingerprint collection, just in case you can set a value.
navigator.deviceMemory
Bypass detection
- hardwareConcurrency
The browser environment with the number of CPU cores, to check:
navigator.hardwareConcurrency
Bypass detection
- screenresolution
Check the following to fingerprint:
window.screen.width
and window.screen.height
- availableScreenResolution
Check the following to fingerprint: window.screen.availHeight
and window.screen.availWidth
Loophole (pixelmoose studio) mac os.
- timezoneOffset
It sets world time UTC with respect to the current time zone time difference value, in units of minutes. Set it up the following for bypassing:
new Date().getTimezoneOffset()
- timezone
- sessionStorage *
First you determine whether there is sessionStorage, then:
!!window.sessionStorage
- localStorage *
!!window.localStorage
- indexedDb
!!window.indexedDB
- addBehavior
This field is unique to IE
!!(document.body && document.body.addBehavior)
- openDatabase *
It will return a database where one may execute sql. The fingerprint only judges whether there is this method.
Can you edit video with a macbook air. !!window.openDatabase
- cpuClass
It seems that Chrome browser returns undefined.
navigator.cpuClass
- platform *
navigator.platform
Detection
if (navigator.platform 'Linux x86_64')
Pew pew (snazy snake studios) mac os. Yet only a small share of browers has Linux x86_64. Better you use MacIntel
or Win32
.
Bypass Detection
- plugins
navigator.plugins
The plugin object has name, filename, description and version attributes. You can use the plugin[0] to get the MimeType object.
- mimeTypes
navigator.mimeTypes
The mimeTypes objects need and plugin object corresponds to a type, suffixes, description, enabledPlugin property.
- canvas
In order to identify a browser we get canvas fingerprint reference. Then we identify a browser by the fingerprint, and then identify what browser it is based on some characteristics of the fingerprint.
Canvas based detection
Bypass canvas based detection
By rewriting the toBlob and toDataURL method to solve this.
- webglVendorAndRenderer
The return will be Card model related information
- adBlock
Detection of adBlock plugin exists
- hasLiedLanguages
Determine by whether navigator.language is the first in the array of navigator.languages
- hasLiedResolution
window.screen.width < window. screen.availWidth || window.screen.height < window.screen.availHeight
- hasLiedOs
Detection
Determine the connection between UA and Platform.
Bypass detection
To ensure there is a relationship among the UA and Platform.
- hasLiedBrowser
Detection
It determines the browser based on the UA in accordance with some of the magical characteristics to check.
- touchSupport
- hasLiedBrowser
Detection
It determines the browser based on the UA in accordance with some of the magical characteristics to check.
- touchSupport
- fonts
Returns a font size
Brrr Mac Os Update
Sites where one may check the browser fingerprints
Brrr Mac Os Catalina
- https://bot.sannysoft.com
- https://fingerprintjs.github.io/fingerprintjs/
- https://antoinevastel.com/bots/