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

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41
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3answers
7k views

Paypal sent an email addressing me with one of my old passwords as my name

I got this email from service@intl.paypal.com, with the title: Your account has been limited until we hear from you. I think this is a scam / spoof email because I don't see any notification in my ...
33
votes
5answers
5k views

Are GUIDs safe for one-time tokens?

I see a lot of sites use GUIDs for password resets, unsubscribe requests and other forms of unique identification. Presumably they are appealing because they are easy to generate, unique, ...
24
votes
3answers
945 views

A Different Approach to PKI

After yet another failure of the public key infrastructure, I was thinking about how broken the whole thing is. This business of undeniably associating an identity with a public key, and all the work ...
21
votes
5answers
2k views

Should usernames be kept secret?

Help me settle an discussion among colleagues and guide future design: Even in a high impact scenario: e.g. protecting payment application or government gateway but in an Internet accessible ...
17
votes
6answers
3k views

How to verify that someone is who they say they are online?

I am working on an online job application web app and the question has come up about how we will verify that someone submitting an application is who they say they are. For example, we don't want ...
17
votes
1answer
301 views

What's this kind of authentication scheme called?

In the past I've heard about a scheme to prove your identity online in places like forums, without having to create an account. When posting, the user would enter a password which is then heavily ...
15
votes
4answers
249 views

Are malicious relying parties able to abuse OpenID logins?

if I logon with OpenID into a website (crafted by attackers/hackers) I want to know how much damage can they do to me? Are they able to steal my contact info, name, etc (assuming I'm using Gmail ...
13
votes
3answers
16k views

Can law enforcement track a criminal through dynamic IP address?

I ask because a week ago my home was broken into and, among other things, my iMac computer was stolen. I am desperate to get it back because it has all the pictures of my daughters from the last ...
13
votes
3answers
556 views

How to secure identity after someone dies?

How would you go about securing the online identity(ies) of someone as best you can after they've died, when they haven't put anything in place ahead of time for this event? Assume we don't know how ...
13
votes
2answers
7k views

Best Practice: “One per-user ssh key” or “multiple per-host ssh keys” [duplicate]

Possible Duplicate: What’s the common pragmatic strategy for managing key pairs? I was part to a conversation last week about which approach to ssh keys is more “secure”. Note, that when ...
11
votes
1answer
950 views

What encryption prevents the tampering of Windows Identity Foundation (WIF) FedAuth cookies?

It occurred to me that the WIF FedAuth cookies contain identity information, that if tampered with, could permit someone to assume the identity of another user. Fortunately, WIF does ...
10
votes
2answers
259 views

How to protect against exploitation using a lapsed domain

Consider a domain that had been in active use for some time but is no longer desired — perhaps the company is out of business or a name change took place years ago, or whatever. The domain ...
10
votes
3answers
4k views

Why would someone register a Facebook account with a stolen email address?

I witnessed an interesting attack today. Someone was able to register a new Facebook account with the email address of a friend of mine. We don't know how it happened, because Facebook requires you to ...
9
votes
3answers
841 views

Length of CSRF Token

Is there any standard length of the token which should be used while generating the random tokens? Should we use the same standard which we use for generating Session IDs?
8
votes
11answers
3k views

Besides IP addresses, how else could one be identified? [closed]

OP: I'm curious how else an actor seeking to identify someone online could accomplish this task besides just using an IP address. What methods would they employ? What knowledge must they have of the ...
8
votes
7answers
329 views

Aren't permanantly logged in accounts inherently insecure?

The basic premise behind a "keep me logged in until I log out" feature is a cookie is stored with some identifier that is used to log the user in again when returning to the site. While these ...
8
votes
5answers
303 views

How to verify new accounts against a known persons database?

I need to (try to) solve the problem of new account creation for a patient portal for a medical records system (electronic health record). That is, a way to activate a patient online and match her ...
8
votes
2answers
2k views

Role Based Authorization vs. Claim Based Authorization

What is the difference between "role based authorization" and "claim based authorization"? Under which circumstances would it be appropriate to implement each of these authorization models?
8
votes
2answers
1k views

Benefits and drawbacks of giving an Administrator two accounts for elevated rights and another for daily use, such as email

Microsoft has long promoted the need to separate administrative accounts from regular use accounts, as shown with this guidance MSFT even went to far as create ADMINSDUser rights to put ...
8
votes
1answer
166 views

How can I limit the consequences of a possible future identity theft?

I am curious about how I can limit the consequences of an identity theft. I see a lot of discussion and advice about managing passwords securely or blocking malware. But what if it happens? What if ...
8
votes
1answer
575 views

How to prepare for protecting identity after death?

In the context of online accounts and identities, what are some best practices to prepare for the one certainty we all face: not a one of us will get out alive.
6
votes
6answers
828 views

Secure Internet Polling

In the United States, there has been a lot of talk about creating a secure polling system that would operate over the internet. I have also heard that Securing a poll over the Internet is impossible. ...
6
votes
4answers
1k views

Is 'Bring your own Identity' as the only authentication option a valid practice?

This question is mainly aimed at OpenID Connect, when it is fully realized. I understand the aversion to signing in with a social networking site, but from what I understand about OIDC, its supposed ...
6
votes
1answer
2k views

Ways to sign gpg public key so it is trusted?

I have a service through SSL which gives the user a code for a specific reason. I want to sign the code with the web server's private key (gpg --clearsign) and send the signed code along so that they ...
6
votes
2answers
652 views

Best Practices for verifying a users identity for helpdesk

I had a conversation today and someone challenged me as to why you would need to verify the identity of a user calling a service desk with anything other than their company email. Granted I know these ...
5
votes
4answers
5k views

Bank account number and account holder in check exposed?

I'm not sure if this is standard practice in all banking institutions but almost all banks where I've received checks the account number of the issuer is exposed (some even the account name). Isn't ...
5
votes
1answer
394 views

Are there risks of using the same OpenID provider for sites with different security levels?

I always use the same OpenID provider (Google, with a strong unique pw and 2-factor auth) in every site that supports it, without thinking twice. It's my understanding that, as long as the provider is ...
5
votes
2answers
260 views

Single vs multiple personas? What are the security implications?

I have two email addresses, one for work and one for home. I have have two cellphone numbers, one for work and one for home. But I am just one individual (and only have one social security number ...
4
votes
3answers
2k views

How secure can IP based login be?

From several security books and sites I understand that IP-based security (with which I mean: user is verified only by IP address) is a bad idea. Our idea is not new: we want a one-time validation and ...
4
votes
2answers
133 views

What bad things could an “attacker” do with my stolen ID's?

So if someone steals my (ex.: I didn't teared up a piece of paper that had these and I throwed it away on the street) ID's like my: Full name Permanent address Birth date/place My mothers name ...
4
votes
3answers
596 views

Web Certificate invalidation - You might be connecting to a website that is pretending to be [Site name]

Recently while trying to log-in to Facebook this notification starts to appear: At first I ignored it (by pressing Continue), but it started to popup every time I navigate through the website! I ...
4
votes
1answer
958 views

UPS my choice — How can I access my public records?

I was signing up for UPS my choice and they asked me some security questions. It asked me questions that signified that it was able to figure out: Who my father is and when my father was born. My ...
3
votes
4answers
1k views

Can SMS text messages be used to verify a person's unique identity through a short code system?

We run online contests and want to eradicate cheating (yeah right), or at least mitigate it. I've asked the question regarding user experience here: ...
3
votes
2answers
139 views

How to prove flyer was (not) authored by specific person?

Let's say we create a flyer in some desktop publishing software (e.g., InDesign, Illustrator), physically print it and post it somewhere. We don't want inauthentic claims of authorship. Is there a ...
3
votes
3answers
2k views

What is the exact difference between SAMLp and WS-Trust?

They seem to be similar on the surface, but I'm not sure how deep the differences are. Can someone explain to me the difference between SAMLp and WS-Trust? ADFSv2 gives me a choice between these ...
3
votes
3answers
94 views

What are some cards that are vulnerable to RFID theft?

I heard that some credit cards are vulnerable to RFID scanning and thus identity theft. I am concerned about my cards and I would like to learn which cards are vulnerable to such abuse? Are any of ...
3
votes
3answers
1k views

Someone keeps using my email address. What to do?

I have had a GMail ever since it was created, so it's an email address that is easy to remember, but also easy for somebody else to get confused with. Since I'm not going to post my email address ...
3
votes
3answers
173 views

How to know if its the same User?

I asked a question awhile ago asking how to make an efficient encrypted chatroom. What I ended up doing was Making each user generate a 4096 bit RSA KeyPair, share their public Keys, and then one of ...
3
votes
3answers
85 views

Way for two parties to establish that they are not previously known to each other

(Sorry if this isn't in the right SE / is not relevant for security.stackexchange - seemed like the best choice) Is there a way for two anonymous parties to establish that they are not previously ...
3
votes
1answer
161 views

What are the benefits of federated identity management over bare bones public key encryption?

What are the main reasons for having a federated identity system such as OpenID over having identities based purely on a public key? OpenID uses an Identity Provider to confirm that a user owns a ...
3
votes
1answer
162 views

pro and cons of having 2 Identity providers

My company has applications on cloud and intranet. Also, we have various roles such as employee, customers, partners etc. We would like ID federation between services hosted on public cloud and ...
2
votes
2answers
1k views

How Is It Possible For Hackers To “Dig Up The Dirt” On People?

Like the title says, I was wondering how its possible for hackers to "dig up the dirt" and get peoples personal information such as address, credit cards, bank accounts, social insurance number, etc? ...
2
votes
2answers
111 views

Is it possible to make a “proof of anteriority” for sites content?

Given a site that publishes unique content online and given that there are lots of site scrapers and persons stealing content and reposting it as their own, inevitably you will have the same content ...
2
votes
3answers
238 views

Verify if person belongs to the claimed university through his university email id

I need to allow users access to an application after verifying that they belong to the claimed institute through university email id. So that if a person claims that he belongs to Stanford University, ...
2
votes
2answers
323 views

When using private browsing can a website view data stored before private browsing was turned on?

If a browser has been used to visit a few sites and has active logins and then the user turns on private browsing, can the sites still access data such as cookies and cached files that were created ...
2
votes
2answers
11k views

Spam that comes from names in my address book, but not their email addresses

I've recently received two spam messages that show a possibly worrying degree of knowledge about my contacts, and I'm wondering how concerned I should be. Specifically, the names -- but not the email ...
2
votes
1answer
105 views

Where can I find articles about identity disclosure attack?

Where can I find more details about identity disclosure attack and it's prevention? If the adversary tries to steal the identity of an individual like mobile patterns and start appears in various ...
1
vote
1answer
57 views

Any known protocol for establishing trust between an inherently untrustworthy source and a server without a 3rd party?

Is there any kind of protocol, scheme, or theoretical paper out there that implements or examines the problem of establishing trust between two parties (communicating, listening) where the ...
1
vote
1answer
349 views

What does a Yadis / XRDS discovery session “look like” to the end user? How does it work? Is it relevant?

I can't wrap my head around how Yadis / XRDS would be used by a typical end user, or how it works so transparently? Considering that this technology isn't adopted by mainstream IDPs that makes me ...
1
vote
1answer
111 views

Passport copy is being used to defraud others - what can I do?

I was an idiot and sent my passport and address to a scam artist I was hoping to rent an apartment from abroad. Luckily, I realized the trickery before sending anything else or any money. ...