Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [user-names]

The tag has no usage guidance.

-1
votes
0answers
30 views

Blackberry have the authentication system of picture and digits combination

Has per security concern, I personally used this feature on blackberry. I felt more secured while unlocking the phone ,even someone watching you while unlocking they can't get the pattern or ...
137
votes
6answers
19k views

Is password entry being recorded on camera a realistic concern?

I live in a city where CCTV camera coverage is comprehensive and increasing. Cameras are getting cheaper and higher resolution. Everyone has a video camera in their pocket already, and we are starting ...
2
votes
2answers
54 views

Domain offline - are unmaintained email clients a security risk?

I have just unregistered a domain. Now my mail client (Thunderbird) popped up a message saying that it cannot connect to the mail server. That's fine - for the moment. However, I wonder what would ...
1
vote
0answers
39 views

What might an attacker do with email address as login name?

This might have been asked before, but I've looked for a few hours and can't find much. I would also like some opinions on what an attacker might do if he enters an email address on a site and it ...
2
votes
3answers
169 views

If I typed username and password, but wrongly clicked another button to go to another page instead of the login button, is there any security risk?

For example, suppose I already typed username and password at this Facebook page: https://m.facebook.com But I wrongly clicked 'Create New Account' instead of Log In. My question is, does it ...
0
votes
0answers
32 views

Are 2-page website logins more secure than 1-page logins? [duplicate]

Over the last couple of years, some websites have switched to 2-page logins: on the first page the user enters their username, and on the second page the user enters their password. Is this actually ...
1
vote
3answers
136 views

What are the benefits of logging the username of a failed authentication attempt?

From time to time, some users can accidently type their password in the username field, either because they missed the tab key or because they thought their account was simply locked, not logged out (...
3
votes
3answers
176 views

Does having a number in your username make it more secure?

So I've noticed a recent (and irritating) trend to require user names to have numbers in them. Is there really any security value to this?
1
vote
1answer
42 views

Should pin numbers expire?

We're using pin number for username retrieval process. Similar to a standard bank solution where a user must enter their ssn and account number to get their username. Is it necessary to expire this ...
0
votes
1answer
93 views

Should we use different usernames for each website, to achieve better anonymity?

I have big problems trying to remember different usernames for each site. Chrome remembers only passwords, so I should install a password manager, however it's crazy you have to do that in order to do ...
-1
votes
1answer
23 views

Access Token or User Id

After logged in to application, why one should use "access token" instead of simply using "user name", to call further APIs ? How it is more secured with access token ?
10
votes
1answer
1k views

How to handle emails as usernames under GDPR?

Using emails as usernames for webapps is a convenient way to avoid the "yet another online username" problem. As such, by using this approach, the emails should be easily available in the backend to ...
44
votes
10answers
17k views

Why use usernames and not just email addresses to identify users?

Why use usernames, and not just email addresses, to identify users? - What is the main concern or the main case when a security expert (which I'm not) should recommend inserting another layer of ...
0
votes
1answer
92 views

Username visibility on network

People in the security world recommend changing the hostname of a computer to something that is not connected to the user. For example: "don't name it: MacbookPro Erica." This way IT staff and '...
0
votes
3answers
255 views

How smart is storing passwords and usernames in files?

So, I wanted to make a login system with PHP, and basically what it would do would be to have a file for usernames and a file for passwords so when a user tries to log in, it just gets information ...
0
votes
0answers
39 views

Naming anonymous accounts

Suppose I want to register several accounts. (They could be multiple accounts on one website or one account on each of several websites.) I want the names of my accounts to be dissimilar from each ...
2
votes
1answer
65 views

Are there any risks with prepopulating a username from a querystring on a login page?

So, we've got a fairly standard login page on a web application. We want to make a slight change so that if a user gets their password wrong, the page reloads (as it currently does) but the username ...
112
votes
13answers
20k views

Is it good or bad practice to allow a user to change their username?

I have looked all over online as well as this site to try to find out more information regarding the security of this, but haven't found anything. In my particular case, the product is a website, but ...
7
votes
2answers
1k views

I accidentally entered password for a website as a username for another website

First and foremost, I am sorry for posting anonymously for security reasons. Exposing my identity might mean exposing my vulnerability, which comes from the problem decribed below. I have accounts in ...
1
vote
1answer
1k views

Storing Username in sessionStorage: bad idea?

I am working on React-Django application that uses JWT for authentication. The user signs in with their username and password, the server validates and responds with JWT and username, and (currently) ...
58
votes
13answers
26k views

Why not use a national ID as username for every website?

Everyday we visit many websites, including our university's website, maybe Google, Yahoo, etc. But on each of them, we have a unique username, while each person in a country can have a "national code" ...
0
votes
0answers
209 views

WPA2-PSK / EAP-PEAP MSCHAPv2: Do user-name, passphrase or SSID have any official restrictions?

I am testing a new WLAN client mode of a device. So that the device can handle preferably every possible case, I have to know which characters and lengths are generally allowed in the SSID, user-name ...
0
votes
2answers
86 views

Password and Login verse very long string (token)

I'm building a PHP login system that uses a username and password at first to grant the user a token and uses that token to grant the user access to their account. My original thought was to force ...
1
vote
1answer
140 views

Is it unsecure to let my personal computer user name be known publicly?

I took a screenshot of a certain finder window to ask a question on apple.stackexchange, and the image includes the name of my home folder, i.e. my user name. Should I bother to blur that out? Is ...
1
vote
1answer
123 views

Is username and password needed to register and authenticate user in zero knowledge guillou quisquater?

I want to make guillou quisquater authentication for a website with Laravel (PHP). The authentication is between server and client(user). In the references i've read (here and here) the registration ...
1
vote
1answer
60 views

Is any security gained from bank issued usernames in this authentication flow? [duplicate]

My Bank's Online Banking feature doesn't use usernames. Instead, they assigned me a digit-only account number*. To log in, I enter my number, then it brings me to a new page to prompt for my password. ...
0
votes
1answer
480 views

Is it bad practice to accept phone number or email as username?

On a website in which all of users' information (line Username, Email and Phone Number) are stored safe and hidden (from other users and public world), is it bad practice to accept email address or ...
2
votes
1answer
1k views

Spoofing the identity of another user in Telegram

In telegram you can setup a unique public username which is available to anyone in the search option, but if you choose not to do that, the only way someone can identify you is by the name you set (ex....
0
votes
1answer
80 views

Account information gathering on subnet device

I have a cybersecurity test coming up. We have a practice test, but no solutions. One question involves being given a fresh Kali VM and a target IP on our subnet, and having to discover as many ...
6
votes
3answers
355 views

Is asking for password before asking for email/username more secure?

When I - and many others - login on a webpage or someone else, I type: <email or username> [tab] <password> [enter]. In case of making a specific typing error - not pressing [tab], the ...
4
votes
3answers
209 views

What can be done to secure passwords that might be stored in plain text or hashed inside a git repository?

I've heard a lot lately about coders being really bad at security. For one they store passwords and sensitive information inside Git repos which are often not secured well enough. Someone then comes ...
1
vote
2answers
123 views

Does an image showing exception error on my site pose a prominent security risk?

I wrote a small website in PHP and ZF2. Had a friend test it out by posting a link to it on Facebook. Apparently I forgot to turn off ZendFramework reporting and he find an error. Posted a photo ...
69
votes
3answers
12k views

Does correcting misspelled usernames create a security risk?

Does correcting a misspelled username and prompting the user with a valid username introduce a security risk? I recently tried logging into facebook and misspelled my email. They prompted me with ...
3
votes
1answer
370 views

Should I use random usernames for a MySQL database? [duplicate]

I have a script that accesses a MySQL database - clearly a strong, random password and a username unique to the script with no more privileges than it needs are all sensible norms here. However, is ...
29
votes
7answers
5k views

Does username length/complexity/uniqueness positively impact security?

Is having a longer/more complex username considered more secure than using a shorter/basic one? Would the uniqueness of a username positively impact security? This is assuming that adversaries aren'...
4
votes
3answers
372 views

How can I keep usernames out of /etc/passwd on LINUX [duplicate]

I've been challenged with auditing a systems security on a scenario and giving various areas we have to audit. Most of which were easy to understand and to provide vulnerabilities as well as ...
3
votes
2answers
3k views

staying not signed in: is it the safest procedure?

each time I do connect to a private or public network I log into websites by keeping the option "stay signed in" or "keep me signed in" unselected, so I have to re-type my username and passwod as ...
2
votes
4answers
210 views

What is the risk of different responses when a login username matches or not?

I am responsible for a website that allows a user to reset the password, as usual. However, the response of the website is different whether the entered username matches or not. This would allow an ...
30
votes
4answers
4k views

Should I be worried if I accidentally entered my password in a username field?

Occasionally I will fail to hit Tab properly when entering a username/password combination. This results in me submitting username "myUsername$ecretPa$$word" along with a blank password. I always ...
1
vote
2answers
121 views

Email used to log in but doesn't have to be unique. Issues?

I've moved onto a project where they are implementing a system whereby a user's email address can be used multiple times by different people - i.e. users can sign up as many times as they want with an ...
2
votes
3answers
14k views

Advantages to alphanumeric-only usernames?

Let's say we are setting up some registration form for some website. I know that if input fields aren't sanitized then SQL injection can happen. But let's say all fields are sanitized correctly. Is ...
1
vote
3answers
759 views

How can hackers access WordPress usernames? [duplicate]

Recently I've had brute force attack attempts on some of my WordPress sites and the attackers are using actual usernames other than the default admin (which was removed). How is it possible for them ...
4
votes
4answers
706 views

Why is a password accompanied by a username deemed 'safer'?

While browsing this community I notice that some people say that the main advantage of usernames accompanied by passwords is as they take more tries to be brute forced, however I don't think that is ...
26
votes
5answers
3k views

Why do “Forgotten Password?” links generally reveal usernames or registered email addresses? [duplicate]

It seems that most sites or systems will just state Invalid username or password As a means to not reveal usernames for use in brute force (and other) attacks. Seems like a good idea as a ...
11
votes
4answers
2k views

Are short usernames a security concern?

I was somewhat suprised that the sysadmin approved a one-letter username like "m" and my username is also short ("nik"). I think that if usernames are brute force attacked then the username should ...
0
votes
3answers
52 views

Pre-filling username for access to online web application

When sending web application users a reminder email, is it reasonably safe to include a link in the email to take them to the web application sign in form whereby the link has their username as a ...
1
vote
0answers
499 views

Password automatically typed into user box on facebook [closed]

Just want to ask some questions regarding on this strange experience while logging on my account on Facebook There are cases that I'm accidentally typing my password into the username box of the ...
34
votes
5answers
4k views

What is the point in having arbitrary username requirements?

I've looked around on Security.SE, but couldn't find much related to the following problem: I recently signed up for Chase Quick Pay as my method of being paid by a part-time job. I've heard of ...
1
vote
1answer
116 views

Linux file information leakage

What information is kept in a linux file about the user and/or system that created it? I want to make some files publicly available, posted on another server such as GitHub or FTP, but I'd rather the ...
2
votes
3answers
236 views

Where can I find a list of frowned upon usernames for web sites?

There are some usernames that shouldn't be allowed to register on online services, for example: administrator, admin, root, system, owner, hostmaster, webmaster, sitename or sitenameadmin As far as ...