Questions tagged [fingerprint]

In information security, a fingerprinting algorithm uniquely identifies the hardware, software or data. Just as human fingerprints uniquely identify people for practical purposes. This fingerprint may be used in penetration tests or for vulnerability management.

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109 views

Anonymity: standardization or randomization?

I wonder if it's better to standardize or randomize data for anonymity. For example, think of browser fingerprinting. If you standardize every parameter, you would have all browsers returning the same ...
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Banking app logon - multiple fingerprints on a device vs 2 passwords known by 1 person

Yesterday I logged on to my banking app via my iPhone. The normal procedure was to enter information that consisted of: The answer to a security question. This had to be entered in full and was the ...
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Going transaction-card free and making transactions only by QR codes by my Smartphone

I have a OnePlus 6 smartphone and I recently opened a bank account in a bank which seems to me very innovative in the context going transaction card (debit/credit) free (using only application and/or ...
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Reason for iOS and Android fingerprint behaviour

Both iOS and Android allow using a fingerprint sensor for logging in, and allow applications to store secrets that can only be unlocked using the fingerprint. Both allow one or more fingerprints to be ...
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125 views

Does Google read a device fingerprint?

Does Google use a device fingerprint? https://en.wikipedia.org/wiki/Device_fingerprint Will Google websites ask Chrome produce a fingerprint? Will Chrome produce a fingerprint for any and all ...
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1answer
305 views

How can websites know that I accessed them before if I use a VM and different IP?

I created a virtual machine with a clean Windows install on it. On that PC I create a virtual switch and I link it to one of my Wi-Fi boards. I disable IPv4 and IPv6 on that connection so I am not ...
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104 views

CISCO VPN Client - Gateway's fingerprint has changed - what is the risk of simply accepting the change?

I am using CISCO VPN client when working remotely to join company's VPN. Once every 2-3 months I receive an alert like the following: Title: SSL Network Extender Message: Gateway's ...
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344 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 are these transaction fingerprints colored?

For those unfamiliar, blockchains have two main types of data structures propagated in their networks: blocks and transactions. Each block and transaction has a hash, just like key fingerprints. The ...
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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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925 views

How secure is the fingerprint sensor in the Pixel 3?

As far as I understand different fingerprint scanners have different security levels. Old fingerprint print scanners could be fooled quite easily as the CCC (Chaos Computer Club) demonstrated. How ...
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175 views

When first connecting via SSH to my server, the reported fingerprint does not match that given to me when I generated the SSH key

When I used ssh-genkey on macOS to generate the pair of key files (one named with .pub), that tool reported a SHA256 hash as a public key fingerprint. When first connecting to my server, a Digital ...
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Enumerating hosts running Elastic Stack

I am currently working on a project where I need to find a host running a SIEM solution. From my research I am fairly confident that the host is running Elastic Stack, probably within another solution ...
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When should TouchID/Fingerprint log-in expire?

I couldn't find such a standard which mention about TouchID or fingerprint log in expiration date. Suppose I have an application and allow users to log in using the fingerprint. I would like to know ...
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1answer
124 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
317 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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196 views

Preventing OS fingerprinting

I am working on a project and I need to hide my Linux OS from nmap or other OS identification tools. I read many articles about TCP/IP stack and changed many properties such as TTL and packet size but ...
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387 views

How does google know if I am logging in from a new machine(using web browser)? [duplicate]

Every time i sign into my google account on a web browser on a new machine, it warns me of suspicious activity. How does google know its a new machine? I am trying to implement a similar thing for my ...
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422 views

Browser Fingerprinting to secure login

Is it a good Idea to identify if the user logging in is the actual user who created the account by using Browser fingerprinting? Basically do a bunch of checks just as they click sign in and if it ...
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118 views

IRC client with ability to verify server's self-signed cert fingerprint [closed]

I'm playing around with UnrealIRCd on CentOS. Just went through the config and compiling and got the ircd up and running. When I go to connect to it via HexChat I can only get through by checking the ...
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1answer
175 views

Self-signed certs on LAN shared with others [duplicate]

My WiFi is shared with my family, and my siblings have friends come over sharing the WiFi password carelessly. Anyone of those guests could have a rogue device and not even know it. My brother has ...
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219 views

How does biometric authentication work from a technical perspective?

Together with a colleague, we discussed the way of biometric authentication and how this works out. Both of us are only interested in security but far from being an expert on the technical side. ...
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1answer
554 views

Google's Certificate Fingerprint doesn't match with the Fingerprints in the Chrome's “net-internals” configurations

As you may know, you can query chrome's HSTS/PKP sets for a domain in the page chrome://net-internals as below: As you see above, there are four SHA256 hash values (in the middle of page and in ...
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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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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
168 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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748 views

How to verify certificate fingerprint? [closed]

I downloaded Veracrypt and its sig file. I go ahead and import it into Kleopatra to verify it (using Windows gpg4win). Now i reach this step: It asks me whether i have verified the fingerprint. How ...
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GPG RSA Authenticity Mechanism Minimum Requirement

The GPG/PGP based RSA authenticity signing mechanism is based on 3 parts to ensure authenticity: the public key the signature the fingerprint of the public key Assuming that the author keeps his ...
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1answer
1k views

How secure is the new MacBook Pro's Touch ID?

I'm afraid that if I will lose my laptop while turned on, somebody might take the fingerprint off the screen or somewhere else and unlock my laptop with the fingerprint sensor. Is this a valid ...
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2answers
7k views

How to verify SHA256 fingerprint of APK

I have downloaded the signal app from https://signal.org/android/apk/. To verify the download, there is a fingerprint provided. But how can I verify this fingerprint with the file? I know that I can ...
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1answer
130 views

Re-run nmap OS fingerprint match with existing subject fingerprint

I have a collection of nmap subject fingerprints (described here), but have updated my local (private) reference fingerprint database since they were collected. Is there any existing way to re-match ...
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1answer
1k views

How much more secure is fingerprint compared to text passwords? [duplicate]

Mathematically, how much more secure is fingerprint compared to textual passwords? Like is there any detailed mathematical analysis?
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1answer
658 views

Best practices for storing and submitting browser fingerprints to secured endpoints

I have a large API and JSON Web Tokens (JWT) used for user authorization. These tokens are validated on frontend (nginx proxy) with Lua code. Now I want to secure my API a little more with browser ...
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696 views

Is it possible to disable the fingerprint scanner but not the button it's on?

I'm looking to get a new android phone, but many seem to have fingerprint scanners, often as part of the main button. I don't want a fingerprint scanner, because I don't want to have to worry about ...
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383 views

Is there a coordinated Firefox user-agent for anonymous browsing?

One fingerprinting element is the browser's user-agent string. If we consider one browser, Firefox, we can see that it has different strings across different OSes, distros, forks (Tor, IceCat) and ...
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901 views

Face ID vs Touch ID [duplicate]

While unveiling iPhone X, Apple made a statement to this end: With Touch ID, it stated that there was a 1 in 50,000 chance that someone would be able to open your phone with their fingerprint. ...
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1answer
581 views

How much does disabling JavaScript restrict browser fingerprinting?

According to EFF's Panopticlick web browser fingerprinting test canvas & WebGL fingerprinting require JavaScript and (at least) screen size, color depth, browser plugins, time zone, language, ...
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3k views

gpg --fingerprint prints out completely different fingerprint

When displaying the full fingerprint of an OpenPGP key, it get a completely different one compared to the ID. For this specific key: $ gpg --list-keys --fingerprint D72AF3448CC2B034 pub rsa4096 ...
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4answers
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How secure is the use of fingerprints (like Apple's TouchID) for authentication in banking apps? [closed]

We are working on the development of a banking app and for customers. We need to implement TouchID in Apple's iOS and a fingerprint check in Android. Firstly, what are the possible security risks ...
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1answer
197 views

Combating Networks of Forged OpenPGP Keys on Public Keyservers

I recently noticed that someone has created an elaborate forgery of my OpenPGP key. Specifically, they orchestrated a short key (32-bit) fingerprint collision, and also forged additional keys to match ...
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435 views

Updating the SSL fingerprint on an IoT device

I'm currently in the process of designing the security model for an IoT product my company is developing. The device will be connected to the internet via WiFi and shall communicate with our company'...
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1answer
2k views

What are the security risks of USB fingerprint scanners in Windows 10?

Hi I have a Lenovo laptop encrypted with Bitlocker, which I also use a fingerprint scanner with. Bear in mind I'm not working with super-secure information, more the level that a developer/manager for ...
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How Travel Site like Tripadvisor, Airbnb track their user [duplicate]

How Travel Site like Tripadvisor, Airbnb track their user browser fingerprint, ip address and block them to make a second account from the same computer? Using a Socks/Proxy service, VPN would work to ...
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3answers
439 views

Biometric fingerprint as salt for hash function

Sorry, might be a stupid question: But is there any hash function, which use the biometric fingerprint as salt? First, the User enters his plaintext password, second he use his fingerprint - some ...
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218 views

Can I detect OS and browser spoofing on webserver side?

My questions refer detecting fake User-Agent, in sense of spoofing user OS, web-browser and other info sent in headers from users browsing resources on my server. Is there a way to detect if user is ...
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4answers
200 views

Could it be possible to hijack physical finger prints in digital form and use them to gain access to other devices and locations?

With more and more devices accepting finger prints in place of passwords, could it be possible to "keylog" these finger prints on mobile devices, for example, by installing a rogue application and ...
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577 views

What encryption type does Windows Hello use for fingerprint information on Windows 10 latest build?

I've contacted Microsoft support and they said they don't support encryption, which is why I'm posting here. Basically, what I'm wondering is, if a modern laptop has TPM 2.0 enabled and hardware ...
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156 views

Consequence of using SSH when Fingerprint has Changed?

I got the following error connecting to my server via ssh: The authenticity of host '[ip address]:port ([ip address]:port)' can't be established. ECDSA key fingerprint is SHA256:[...
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552 views

Will the OpenPGP key fingerprint change if the certificate is extended?

Should the fingerprint of a renewed (extended) OpenPGP Key be the same? Is there any documentation on it (RFC)? Quoting from RFC 4880: There are many ways possible for two keys to have the same ...
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1answer
184 views

Adobe Flash Inside Whonix Workstation

It's known that Flash can give away your real IP address to web services if you use it in Tor Browser directly run by your computers OS. But what if you use flash inside a Whonix workstation (either ...