Questions tagged [identity]

Identity is the property of an object which allows it to be uniquely specified.

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Why does Apple need a state issued photo ID to sign up for their developer program? [closed]

I attempted to enroll in Apple's Developer Program through their IOS Developer app today and encountered an odd surprise. After providing basic information in the first couple of pages, I was puzzled ...
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REST API with OAuth-Authorization running in different domains

We are attempting to set up authentication for a Web-API (build on .NET Core) that is being hosted on different domains, mostly within the the respective intranets. Currently relying on Windows ...
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3answers
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Use-case for decentralized identifiers (DIDs) with unique identities for each relationship

The W3C working group is working on the standardization of Decentralized Identifiers (DIDs). I watched a video presentation about DIDs and the presenter mentioned several times the possibility of ...
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Send a Picture of my ID and a selfie of me holding it to a Questionable Website

Some website asked for the verification of my identity to make a purchase of online goods. I didn't think twice and send them a picture of both sides of my country's ID (not USA) and a selfie holding ...
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1answer
56 views

How is identity implemented?

When I join an organization or create a Gmail account, I am given an identity. What does the organization do to create my identity? Does it just create new pair of public key and private key? I tried ...
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1answer
132 views

Why don't security conscious websites use a combination of private unique identifier and password to secure their logins?

To be clear when I say "private unique identifier" I mean an identifier, which is not stored on the database for the website, it would be hashed in combination with the password and a good ...
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Can hardware identifcation be evaded/spoofed?

If I'm not wrong, one of the many ways companies track and collect data of people through the internet is by identifying their hardware. Getting the monitor resolution, figuring what CPU it is, etc. ...
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1answer
538 views

Should or shouldn't I show a serial number, MAC address and other product ID when I sell it online?

I want to sell online some of the electronic stuff that I don't need anymore, such as my ASUS Wi-Fi router, and I'm wondering when I upload photos of it should I leave its serial number, MAC address, ...
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1answer
57 views

Validate that Web Service is authentic

If I have a web service (REST API, RPC, etc) that I open source, how can I prove to the user that the service they are connecting with is indeed the same one whose source I published. I am envisioning ...
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1answer
49 views

What are the risk of providing identity in my application, rather than using a provider?

In our multi tenant SaaS software application we intended to use Microsoft Identity Platform (Azure AD) for user authentication and providing the claims for authorization within the application. We ...
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81 views

Risks of Providing a Passport Number

Company A pays company B for enterprise software. Company A hosts it internally. An employee from company B needs access to servers at company A in order to manage said software Company A is ...
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1answer
54 views

Verifying the security of SAML SSO

I run an instance of a log aggregation product in the cloud, installed on a VM. I've strictly configured it's networking settings, internal firewall, internal port redirection, strong admin password, ...
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2answers
75 views

Identification through digital signature. How safe is it?

Let's say I want to give some data to Bob. I have his public key. I tell him to generate a digital signature for text "{some_stuff: 1, nonce: 2}". After he does that and after I verify it's ...
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2answers
219 views

Are there security reasons for prohibiting universal mac address modification?

Background In a standard 48-bit MAC address, the 7th (most significant) bit specifies whether it is a universally-administered address (UAA) or a locally-administered address (LAA). If it is 0, then ...
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1answer
76 views

Randomly generating invoice IDs

I'm in the process of setting up a local (i.e. offline and very limited) business, and I'm thinking of generating invoice IDs randomly to avoid the clients knowing that they're customer number #...
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1answer
87 views

Why to use username and password instead of just a long password? [duplicate]

Why do most websites use the pair of username and password as we can just use a long password like a token to identify a user? A simple example: On the server, we create a JSON file with user data ...
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533 views

What is the difference between the many identifiers in GnuPG?

GnuPG seems to have number of different ways to refer to a (sub)key(pair): Key IDs Fingerprints Keygrips Additionally, gpg --list-sigs seems to show hexadecimal identifiers for signatures and such ...
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1answer
122 views

What is the best way to verify email address or phone number during call centre sale?

My company sells products through calls. During the calls a customers PII is collected and used to create the product. This PII includes email. After the product is created, we email the customer a ...
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2answers
326 views

Can name and date of birth be hashed somehow to generate a secure identifier?

I'm working on a project which we intend to launch for developing countries, and, as a result, want to limit the amount of information needed for login and identification, while still maintaining ...
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1answer
87 views

Possible to verify someone is a real person without direct connection?

I think the following is not possible, but I have no proof and would like to find out wether it is possible or not. Let's say in a network, every participant cannot connect to each other participant ...
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1answer
44 views

Proving a software deployment's origin sourcecode [duplicate]

Is there a mechnism that can ensure a deployment (server that can give https responses) is built from the actual (public) sourcecode provided by another https URL? sourcecode from commit #10020 at ...
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1answer
122 views

Sending credit history report to potential landlord

I have a credit report from TransUnion that contains: My real name, current and past addresses Current and past credit card accounts, last 12 monthly balances and payments My past mortgage Past ...
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2answers
126 views

Handling of 3rd party OAuth2 tokens

after some extensive research I still don't know how to properly implement the following case. I think this question answers something similar, but I'm not 100% sure (Should client have access to 3rd ...
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1answer
151 views

How did a website make an accurate assumption of my identity in incognito mode? [duplicate]

What piece of information can websites retrieve that would allow for later identification without cookies? Intro Out of interest I jumped into the rabbit hole of online marketing scams. The site I ...
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2answers
1k views

Uniquely identify each mobile phone of Android 10 / 9 and below

Background: I have an Android APP with millions of users, but some users are malicious users (robot, fake, privilege escaped, etc). The common solution is to detect & block those "bad" accounts ...
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2answers
191 views

Could you store your passwords in a phone app governed by a QR code?

I had an idea a little while back to have an ID card with a QR code on it that you kept in your wallet. When you want to access your passwords (view them directly), you need your ID card and to scan ...
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1answer
392 views

What is delegation, identity delegation, and delegated authorization, and what are the differences among them?

I've been writing up a guide to OAuth 2.0, OpenID Connect, and Identity Server 4 mostly for my own learning, drawing on several sources such as OAuth2 In Action, OAuth 2.0 Simplified, and CISSP: A ...
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3answers
172 views

Is there anything like a standard GUID to identify a PC?

I am asked about my opinion in a case as follows: Someone visited a (totally legal, in fact US government) website A and identified themselves. At a very different point in time they - allegedly - ...
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60 views

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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2answers
119 views

How to Prove you created IP using a Notary

Say you created some IP in the form of some files. How do you prove that you created the IP, in a theoretical cryptographic sense? A major constraint is to maintain security as well, so you can't just ...
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1answer
137 views

Samba and verifying server identity

Suppose that I have two Windows 10 (Professional edition) computers, one (PC) sharing a folder and second one (notebook) copying data to the shared folder automatically. I would like to prevent ...
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2answers
105 views

Is there any way to alter a caller's voice just enough to make voice recognition impossible?

I did search and found this post: Is it possible to identify mobile phone user with voice recognition It does not answer my question, however. Is there any way to alter a person's voice just enough ...
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173 views

Is there any privacy- or security-relevant difference between FIDO2 and SQRL

I just learned about FIDO2 (WebAuthn) and try to make a comparison to the lesser-known novel SQRL authentication scheme. Both seem to use the same key elements: a private, user-resident "master key" ...
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1answer
143 views

How can I challenge an attacker to reliably identify their hardware? [closed]

I distribute a client application where I would like to identify a user's hardware specifications when they begin interacting with my server. I am specifically interested in identifying the user's GPU ...
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5answers
236 views

Potential Risks Using Reference Code Based Authentication For Web Based Application Form That Contains SSN

I'm currently building a web based membership application form that will require a user to enter an SSN and other identifiable information. Part of the requirements of the membership application is to ...
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1answer
1k views

Identifying devices in mobile app using UUID

I have a mobile application, for Android and iOS (both native), that communicates with the backend through a REST API (over HTTPS). The application allows users to sign in or use the app as a guest, ...
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1answer
86 views

If only SP (or IDP) uses Shibboleth in its SAML implementation, can the systems still communicate?

I was reading about Shibboleth's metadata -- https://wiki.shibboleth.net/confluence/display/CONCEPT/Metadata#Metadata-Use(andnon-use)ofMetadata , and how it's used to identify IDPs and service ...
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52 views

Checking authenticity of a mobile app (digital staff card) [duplicate]

I've been asked to implement a digital card for member's of our organisation, to replace the old plastic ones. Members would install our app on their phone and setup a "card" with their photo on it ...
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2answers
85 views

What prevents an identity provider from falsifying authorization in a SAML 2.0 flow?

I'm confused about something in the SAML 2.0 flow. When the initial access to the service provider is made, the service provider must first validate that the user indeed has access and so the service ...
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2answers
413 views

What's the point of a digital certificate for which no private key exists?

I am only using digital certificates to sign documents, and my understanding is that the correct flow is the following: create a private key (e.g. using openssl) create CSR using the previously ...
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1answer
404 views

Is it possible to “reverse engineer” identicons?

As shown in this question, default user avatars (like mine) are identicons and are generated with the user's email (where provided) or the user's IP address (where the email is not provided). Given ...
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1answer
343 views

How is Privileged identity management (PIM) different from privileged access management (PAM)?

I am very confused about those two, I was trying to understand the difference but it all sounds the same from what I read online.
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1answer
92 views

Data leakage in internet-only services

Nowadays, internet-only services became very popular, for example, direct bank and many others. The advantage of such services is you don't have to spend the time to get to the office in order to get ...
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0answers
295 views

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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3answers
5k views

Drivers license required for online purchases

Problem I tried to buy a few things from a particular industry, and the sellers are independently all asking for a copy of my drivers license to verify that it matches the details on the card because ...
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21answers
20k views

Are there unphotographable, but scannable ID cards?

We have a client who hosts an event, with a tight budget, that uses lanyarded Photo-ID cards with barcodes on them. The barcodes are used to gain access to various areas at the event. We were ...
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4answers
153 views

What is a simple and secure method to transfer virtual assets?

Consider a MMORPG where users own virtual assets like magical swords or rings that can be used by the player. This system needs a safe method for transferring assets from Alice to Bob. One ...
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2answers
203 views

Should things like project IDs, cloud region IDs etc be kept secret on an open source project?

All my side project are open source - just using the free Github account. I'm wondering about how security conscious I need to be about keep things like: Google Cloud Platform Project IDs Log ...
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210 views

Can your cell phone transmissions reveal your identity?

Is it feasible for hackers sitting near you to have some sort of RF listening device that uses your phone's transmissions to identify your name or other information that could be used to determine who ...
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1answer
99 views

How is AWS app identity verified?

So I get the notion of roles and service-linked roles and policies in AWS. However, all of that works only if the principal/identity (and I know there's a difference between the two, but using either ...

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