Questions tagged [fingerprinting]

Gaining information about current version of an application or operating system in order to find a vulnerability.

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GPU vs integrated graphics hardware, browser canvas fingerprinting, and multi- or dual-boot systems

My goal is to ensure that two operating systems installed side-by-side on the same device are unable to return the same canvas fingerprint, when a modern browser is allowed to run javascript without ...
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How to resist JA3 fingerprinting while browsing using common browsers (e.g. Firefox, Chrome, etc)

Background. Context. I use Firefox, Google Chrome, or Chromium on Linux. Question. How to have my browser resist the JA3 fingerprint, so that sites don't identify me by it? Thoughts. I guess it may ...
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Fingerprinting Cisco ASA Device

I have used Nessus to determine that a client's Cisco ASA is vulnerable to a Read-Only Path Traversal Vulnerability. So far I have tried viewing the logon portal page source code, nmap -sV -A <host&...
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How could I know if a website is fingerprinting you via WebGL?

I would like to know if a website is fingerprinting me via WebGL, first of all, knowing if the site is doing it Knowing when they send the request to my browser Knowing what value I am reporting to ...
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Number of biometric samples required to form an exhaustive set of fingerprint hashes?

Number of biometric samples required to form an exhaustive set of fingerprint hashes? Slight variations in the sample produce different hash values of the sample data. The answer linked below ...
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Application to detect SSL certificate fingerprint differences

My project is to find out how to detect HTTPS interception/mitm and create some sort of application using detection techniques. One of the ways I was thinking of is a active desktop application to ...
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60 views

How do I assure that a site that I visit does not know I have been there before? [duplicate]

If I use the same machine (my PC) but with a different IP address and a different browser that I have never used to visit a site, will that site still be able to identify me? I don't understand the ...
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171 views

Can a fingerprint be reconstructed from a device that uses it for authentication?

I've noticed a lot of phones (not to mention, other devices) have built in fingerprint sensors these days. Do these devices store information in such a way that your fingerprint could be reconstructed ...
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Why does my IP being leaked with system-wide proxy through webTRC, but it doesn't happen when I use system-wide VPN

WebRTC manages to leak my IP when I use proxy, but when I use VPN it only shows VPN server's IP (both proxy and VPN were system-wide). What's the key difference? Google Chrome was used in both tests (...
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How to prevent browser fingerprinting accoss VM's whilst remaining natural?

I am using a couple VM's fitted with proxies and find that browser fingerprinting across VM's causes me many issues. I also have issue with the browser created inside VM leaking that I am using VM. ...
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Is mutually private protocol negotiation possible?

Say I have two peers that wish to engage in a protocol with multiple sub-protocols. Naturally, it is necessary for them to negotiate which sub-protocol they should use. But what if the peers wish to ...
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Client Fingerprinting Resistant Protocols

It's well known that web clients are easy to fingerprint, and you can see that the same is true for other protocols like email and BitTorrent. This begs the question: which protocols aren't easy to ...
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207 views

How can you fingerprint a Django web app?

In order to better protect my Django web app, I want to reduce the leakage of information that could help an attacker profile my application. If you were an attacker, what would you look at to ...
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280 views

What impact does an installed extension have on the browser fingerprint (uniqueness)?

Motivation I want to develop a custom, local Firefox extension and investigate, if its installation has any impact on the browser fingerprint. Background Some time (years?) ago, there were articles ...
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Do emulator programs like Bluestacks, Memu, Genymotion use the real device settings of the computer you're connecting from?

Many online services use fingerprinting to track users - storing enough hardware and software details to create a unique record. But what do emulators do? Can they make you completely anonymous on the ...
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Tor Browser: Could a website or ISP detect modification to DOM done by users if Javascript is disabled?

I have Tor Browser (which is basically Firefox ESR) on "Safest" setting (Javascript disabled). We're generally scolded about using extensions in it, as they can alter web traffic patterns to ...
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242 views

Is javascript fingerprinting becoming obsolete?

Okta recently sent out an email to admins about changes to their new device detection strategy. According to them: Due to browser advancements in anonymous web browsing, JavaScript fingerprinting ...
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725 views

Effect of Firefox's "Responsive Design Mode" on the browser's fingerprint

Today I switched ON the "Responsive Design Mode" under the "Web Developer" Section of the Firefox menu, and from the dropdown menu selected "iPhone X/XS iOS 12". So now ...
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1answer
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Which approach is technically more effective to hinder user tracking - fingerprint generalization or randomization?

Tor's approach to countering fingerprinting is to make as many users "appear the same" as possible. Let us call this "generalization". While Brave tries to randomize all fingerprints of each and every ...
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1k views

nmap script "smb-os-discovery.nse" does not output information about the host OS?

I was following this Lynda course. https://www.linkedin.com/learning/ethical-hacking-enumeration/enumerating-smb-from-linux-episode-1 The instructor used this script to detect the OS of the target ...
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225 views

Can I bypass basic auth to fingerprint a web server with Httprint or netcat? [closed]

There is a web server I'd like to recon using httprint. But that web server has a basic auth protection on 443. Port 80 is not responding. When I launch httprint, it says Unspecified Error The same ...
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960 views

How to configure a VM to protect all my hardware fingerprint from guest OS and softwares?

This question was originally Does Firefox in VM have a common enough fingerprint so I don't need tor browser? in Tor community. I want to know about what a web browser's fingerprint like in a VM, ...
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How can we protect encrypted files and directories from being fingerprinted when stored on online storage services?

Assuming that online storage providers are considered untrusted, if files and directories are encrypted, how can these be protected against fingerprinting? The files are encrypted using rclone's ...
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1answer
148 views

Why fingerprint a browser if a fingerprint can be replayed?

I'm facing an issue with rampant scraping and abuse on a website that costs me a good chunk of money to maintain. So, I have been looking to implement a few solutions, and apparently these solutions ...
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1answer
125 views

Possible to detect tools like HTran from network analysis?

There is a publicly available tool called HTran which is widely used by criminal groups in cyberattacks to exfiltrate data. It simply relays traffic from one host to another, much like a proxy. It is ...
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1k views

How is browsing from a virtual machine/virtual box preventing fingerprinting or tracking?

Does it increase your internet security in terms of privacy/tracking/fingerprinting if you are surfing with your web browser in a virtual machine environment (virtual box + VPN) instead of surfing ...
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226 views

Fingerprint FTP services without Banner message

I want to write a python script that is able to fingerprint ports on a server to identify the FTP client running on the port. While there is often a Banner message upon connection, this message is ...
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How do fingerprinting techniques involving Canvas and WebGL work?

Websites can fingerprint a web browser with techniques involving WebGL and HTML5 Canvas. The website like https://amiunique.org/fp shows an example of this. How exactly do these techniques work? I ...
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Does photo fingerprinting (using metadata) allow to search all photos on internet made by the same user (privacy issue)?

Browser fingerprinting is well-known: since a client gives many HTTP attributes/Javascript attributes during a website visit, the probability that two users have the same exact values for all this ...
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1answer
2k views

How to change the browser canvas html hash for fingerprinting?

building on this previous post Can canvas hash be used to track me and ruin my anonymity? I want to ask: Is there any way a user can affect this canvas html hash generation, a way to make the hash ...
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1answer
1k views

Can canvas hash be used to track me and ruin my anonymity?

I have heard there is a fingerprinting method that traces internet users based on browser data. I believe it is called "canvas HTML hash". This hash is unique, as I understand? Or does it ...
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8k views

Why do some web servers still provide information on vendor and version in the HTTP response headers

I think in the security field it is a well-known fact that its not a good idea to let the web server vendor (e.g. Apache) and the version be visible to the outside as this can be used to launch ...
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592 views

How to fingerprint Windows 10 reliably?

Recently, I have been practicing penetration testing and I have come to a standstill when trying to fingerprint the OS for a Windows 10 target with nmap. For the most part, I'm not able to identify ...
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576 views

Antivirus and malware fingerprints

I´m a student in IT security and I would like to know how the malware fingerprints work in common AntiVirus. I understand that when a malware is detected it's because the binary fingerprint is known ...
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241 views

Do I have to do any setup if I want to run a VPN with the Tor browser bundle?

I know there will be some votes against this but I want to run a VPN alongside the Tor browser. Can I just open the VPN program, connect to the VPN provider, then open the Tor browser and use it as ...
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1answer
127 views

Fingerprinting Windows Architecture from a file on remote system

This is a post following up with this one. Similar situation as the above post - I'd like to know if there's a way to find out the architecture (x86 or x64) of a windows system from a file on a ...
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Is perceptual hashing feasible to identify users [closed]

I have been shadow-banned on an app (Tinder) and I cannot get around it. I have been doing some background research into how they are able to identify me and have come across device fingerprinting (I ...
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1answer
691 views

Will two smartphones (identical hardware and software) generate the same canvas fingerprint?

When using Canvas Fingerprint (like on this website) to distinguish users, does two smartphones (same model, same OS version, and no browser/plugin customization) will share the same fingerprint?
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How to defend against adblock detection/adblock subscription leaks?

Is there a best practice (or useful extension) for defending against adblock fingerprinting techniques? I'm not asking about how to bypass adblock detection as such, but rather how one might appear ...
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1answer
414 views

How os fingerprinting works and how to prevent it in browser? [duplicate]

For privacy I always changed my useragent of browser regularly and it used to work. But lately changing useragent alone in browser dosen't prevent os fingerprinting. Tools like https://browserleaks....
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1answer
864 views

How to mitigate the consequences of being tracked by fingerprint2.js?

A webpage of a bank, where I get redirected to make a payment for my ticket, uses fingerprint2.js. The webpage doesn't work at all when I'm using AdBlock extension in my browser and fingerprint2.js ...
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2answers
1k views

How does Cloudflare track their client? Tor is not a workaround

I mirrored a ecommerce site using wget. This site seems to use Cloudflare to handle their web traffic. What's interesting is that after 90 % or so of the mirroring was done, wget started to produce/...
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1answer
195 views

Is there a way to find out what information website queries about us? [closed]

What tool or software should I look for to find out what "fingerprinting" data a website is tracking? Like, I want to know, if website looks for a cache and/or fonts installed in system, or Canval, ...
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1answer
897 views

Will disabling WebGL make me more or less unique on the internet?

I have wondered whether disabling WebGL will make me more or less unique, I fiddled around with https://panopticlick.eff.org/ to see what would happen. If I keep it enabled I am 1/205.66, with me ...
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166 views

What is ScriptSafe's "Client Rectangles" and what information does it leak?

Just wondering how this one affects the privacy and security because it breaks a lot of sites displaying images for example.
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Does multi-factor authentication make tracking/fingerprinting easier?

Is multi-factor authentication a privacy risk? Does it make tracking/fingerprinting easier? It was seem so because whoever is accepting the OTP could track and record every OTP request and metadata ...
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744 views

What "timing attacks" could websites perform using last modified dates of files?

https://developer.mozilla.org/en-US/docs/Web/API/File/lastModified describes the .lastModified property of a File object in JavaScript (usually created when a user selects a file via a HTML <input ...
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How can I fingerprint Yii framework version?

I am currently testing in a black box manner an application written in Yii framework. How can I fingerprint Yii framework exact version? It's there a public file or function that I can use to perform ...
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1answer
252 views

How can Telegram find my phone number on iOS 11 after uninstall?

I wanted to sign in Telegram on my iPod Touch running iOS 11 with another account. I deleted the app and install it again. On the sign up screen Telegram filled the phone number field with the number ...
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1answer
490 views

How reliable is using Fingerprint sensor (iPhone/Android) for identity approval?

What I'm trying to achieve is a confirmation of transaction (not payment) with a fingerprint sensor. Pretty much like Google does in its Play store: Chose a product, click pay Approve your choice ...