A web browser is an application which uses HTTP and related protocols to retrieve HTML and XML data from servers. As the web has become a critical source of information and communication, web browsers have become a critical component in information request, transfer and management.

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Considering that SRP is better than SSH and Basic Auth, how can it be implemented in a website?

SRP is short for Secure Remote Password protocol, and provides a better way for passwords to be sent over the internet. I've read the information at it's Stanford University home page, the Wiki ...
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3answers
67k views

HTTPS icon red and crossed out - Chrome browser

What does it actually mean when the HTTPS icon is red and crossed out in Chrome? Does this mean that the site is vulnerable to a Man in the Middle Attack? Is it safe or not?
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4answers
2k views

Suggestions to avoid cookie-hijacking in a web application

I've been developing web-apps for quite some time now. While making websites, the "remember me" feature is one of the most trivial(read as must-have-for-clients) feature to be implemented. Until ...
6
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2answers
419 views

What protects cookies?

What protects cookies from being stolen? After all, they are just text files. A misbehaving browser can give up a lot more information that web masters would like. How do I know that a browser won't ...
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3answers
277 views

Using Lynx on potentially malicious websites

After needing to refresh how to unpack an android ramdisk, the site I remember having good information comes up with something similar to this: Being cautious, but still wanting to get what was on ...
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3answers
260 views

How to add certificate pinning for a certain domain to my web browser?

There is HPKP (HTTP Public Key Pinning) which servers use to tell the client's web browser which certificates to trust (in the future) for the domain that is being contacted. Google's Chrome and ...
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3answers
400 views

Are there guidelines for application design of HIPAA compliant browser applications?

This is a different twist - I'm pushing dispatch information to first responders, such as fire, police, and EMS. But they all could, potentially, include medical information and PII together. My goal ...
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1answer
2k views

Same-origin policy for file: URLs in Android browser?

When you load a file:// URL in an Android WebView or in the Android browser, what does it treat as the origin? What can the Javascript on that page access? Can it access other files in the same ...
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1answer
73 views

Is there any benefit in having CNNIC certificates installed, if you're not in China?

All modern browsers/OS come with root certificates from the China Internet Network Information Center. AFAIK these certificates are required for computers sitting behind the Great Firewall to function ...
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3answers
8k views

Javascript Malware: How does it work, and how can it be mitigated?

I am wondering how malware gets served through Javascript. I've noticed a few illegitimate pop-ups while visiting some financial websites. I wonder how malware exploits work against the application ...
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3answers
3k views

How can I protect my saved passwords in Chrome?

I'm currently using WIN+L, and sometimes Kid-Key-Lock, to prevent anyone from checking my storaged passwords but if I forget doing it only once, all of them are vulnerable of theft. How can I protect ...
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1answer
282 views

How do I securely embed an <img> tag using a user-given URL?

If I hypothetically wanted to allow users to use an avatar from an arbitrary URL like this: <img class="avatar" src="{user input}" /> There are many problems that I can think of: There are ...
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3answers
338 views

Same Origin Policy - XHR response

I know that Same Origin Policy (SOP) prevents a page/script from one origin to read response from another origin, but it does not prevents the page/script from making a XMLHttpRequest (XHR) request to ...
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2answers
138 views

Malicious user inflicting XSS attacks appears to be on my own network

I have a live Django project where I'm using nginx as a reverse proxy with gunicorn as the application server. It's a fairly new project and isn't SSL enabled yet. There's a user on this project who's ...
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2answers
650 views

How does BeEF work and how can it be persistent

BeEF - the browser exploitation framework. I think (thought) I had a basic working understanding of how it works. Recently, though, I was watching, this DEFCON talk, where a hacker used a ...
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1answer
919 views

Browsers silently adding trusted root certificates in Windows

When accessing https://internetbanking.caixa.gov.br (site of a well known bank in Brazil), the server returns a certificate signed by "Autoridade Certificadora Raiz Brasileira" (Brazilian Root ...
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3answers
2k views

Is there any way I can block (or conditionally approve of) iFrames on the client side?

Given that iFrames are used in many common exploits, I'd like to conditionally disable iFrames except for sites that require it such as GMail, or MasterCard SecureCode. I also suspect the ...
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3answers
229 views

find if 0-day flash bug was exploited (on a particular machine)

There have been several critical 0-day exploits in the past days/weeks in Flash alone. Nobody knows how long the 0-days have been exploited, and it is reasonable to expect that there are 0-days being ...
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2answers
333 views

Zero-Day Exploit targeting Internet Explorer Versions 9 through 11

Few days ago, FireEye has found a vulnerability, which affects all versions of IE (even the latest 11). Microsoft has official statement regarding this issue. FireEye wrote a technical article on ...
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3answers
325 views

How do I secure my advertisement space against ad overlay browser attachments?

I don't really have an issue with advertisements simply being blocked by individual users who are visiting a customers site or my own site. As an individual you have the freedom to choose not to look ...
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4answers
1k views

Is it a security risk to use an unknown web browser?

The more I read about TLS, the more I get convinced that the browser is the weakest link in the chain. I know that nobody agrees with me as there are no articles about that in Google, but it looks ...
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3answers
24k views

Can a website still detect my real MAC address even if I use different virtual machine each time I visit the website?

Suppose I use a proxy and a different virtual machine each time I visit a particular website, will a website still be able to detect my MAC address and/or uniquely identify me? Assume that the website ...
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5answers
31k views

Using Private Browsing mode while connected to organization's network

At the workplace I use the organization's network for accessing internet (well that's the only option). I am not sure if the network administrators monitor what I browse, how frequently I access ...
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3answers
5k views

Cookies “Secure” Flag

How do cookies' "secure" flag work to determine whether cookie itself should be included? e.g. on an HTTP (unencrypted) connection... user has no cookie yet and tries to log in; user logs in ...
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3answers
251 views

Could browsers improve security of stored passwords by using setuid?

On Unix-esque systems, Mozilla Firefox stores a users' preferences, web history and stored passwords in a set of files that are readible and writeable by that particular user. This makes sense: when ...
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3answers
357 views

Is “untrusted code” reported by DOM Snitch a vulnerability?

One of the most frequent errors that DOM Snitch finds in sites is Untrusted code. He finds it in google.com for example. Here is an output of this tool: Is it a vulnerability? Edit: This report of ...
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4answers
15k views

Security issues using iframes

We are looking to move to iframes due to technical challenges. By moving to iframes it will be easier to manage the technical issues. But we are not totally sure of security implications of iframes. ...
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3answers
457 views

Is Content Security Policy an approach that is worth to support?

Mozilla Firefox 4.0 supports something called Content Security Policy that disables the interpretation of embedded Java Script. Only external Java Script files that are referenced using a script tag ...
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1answer
235 views

Is this a security flaw in Firefox 18.0?

I had a couple of .mht files which opened in IE, a browser I never use. I renamed their extension to .HTML to run it in Firefox. When I opened the file in Firefox, Firefox created new tabs endlessly. ...
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4answers
3k views

Is online banking more secure on iOS than a desktop computer?

Does Apple's iOS provide a more secure environment for online commerce (banking or shopping) than Windows or Mac OS X? Since the only software that can run on iOS must be vetted by Apple, the ...
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1answer
623 views

How can I see which sites have set the HSTS flag in my browser?

My question is about Firefox and Chrome. Is there a possibility to see which sites have set the HSTS flag in my browser?
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1answer
120 views

How can two clicks lead to better security in the context of, e.g., Twitter and Facebook share buttons?

The sharing section of Jedox's webpage has the Facebook, Twitter, Google+ and Linkedin share options in default inactive state. You need to first click it to activate and click again to get the share ...
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2answers
4k views

How is user authentication sent in a public wifi? Radius/802.1x/EAP etc

I visit the airport, I pull out my laptop and connect to a network (no password needed). I open up my browser and i am presented with a screen saying I need to pay to use the network. If I pay, I ...
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1answer
150 views

Are there cases where malicious scripts on websites breached the sandbox of a browser so that files on the user's computer could be accessed?

Whenever a hosted script on a website tries to access a file on a user's computer the sandbox prevents it, but has there been any documented case where this sandbox obstacle was somehow overcome by ...
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2answers
211 views

Information Transfer Between Browsers and Tabs

Is it possible for a webpage to detect or otherwise be aware of what other tabs in the same browser, or even other open webpages in other browsers are doing or transmitting? I am well aware of ...
5
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1answer
1k views

Questions on reflected file download (RFD) attack

I read this article, and the whitepaper by security researcher Oren Hafif which mentions the following salient points: RFD, like many other Web attacks, begins by sending a malicious link to a ...
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2answers
11k views

How is a website determining my location even via VPN? [duplicate]

I'm currently in China, and accessing the Internet via a VPN in the USA. When I access Google maps or other location-based web services, they all show my location as that of the VPN server. However, ...
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4answers
7k views

Is it safe to allow users multiple login at different browsers & computers?

We are currently developing a web application. The developers have allowed multiple login. e.g an user can log-in to multiple computers at the same time. They are quoting Gmail account as an example ...
5
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2answers
937 views

HTTPS Sensitive Information and Caching

I have a website where I need to share a sensitive key with the user. Of course, I'm using HTTPS on the page. The key is put into the HTML server-side in ASP.NET. My concern is, if the user's computer ...
5
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2answers
434 views

Questions on true anonymity

I am going to use Tails to connect to Tor through VPN which has AES-256 data encryption, SHA-256 data authentication and RSA-4096 handshake encryption on my Mac on my school's WiFi (as public as I can ...
5
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1answer
6k views

Is it safe to give an Oauth token to client side javascript so it can directly make requests to a server?

I currently have a simple backbone.js application served from my domain (example.com), which is provided an Oauth token. Specifically, I pass the Oauth token through my page template into the ...
5
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4answers
1k views

Clients trust my custom CA

I'm sorry if this is a dumb question. I'm new to all this. I have a large number of users. I need to be able to generate SSL certs for various internal domain names. All of these certs need to be ...
5
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2answers
6k views

Can Cookies Without the Secure Flag be Stolen, even when only accessed via HTTPS?

Is it possible to capture the cookies used by HTTPS site when cookies don't have secure flag set. Suppose the site is https://www.example.com. http://www.example.com does not show up, also ...
5
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7answers
465 views

Malicious Websites

Just wanted to get everyone's opinion on this. In Information Security, you get various alerts about particular machines on your network going to sites and/or IPs that have been flagged as ...
5
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3answers
356 views

Strategy against browser exploits on Windows?

On a friend's computer is some kind of spam bot installed. It sends messages like Hello: I received my apple iPad 32GB ordered on an online shop (www.elevalley.com ) today. So exciting ...
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2answers
123 views

Why do so many browsers show sites with revoked certificates?

Everyone seems to agree that it is REALLY important to protect private keys so the encrypted Internet can remain just that (see for example at How do certification authorities store their private root ...
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1answer
305 views

Where does the responsibility lie for a XSS vulnerability

I am an avid user of Workflowy (online outliner/note taking tool) and I installed the Chrome extension 'Workflowy for Coders', which formats the text within notes. I discovered that one of my notes ...
5
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1answer
65k views

Chrome is telling me I am receiving a forged certificate for Gmail, is someone trying to hack me?

I went to log on to https://mail.google.com this morning and I got the following error. Is someone trying to attack me or is this just a bug? I'm on a WPA2 encrypted wireless connection using Chrome ...
5
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1answer
88 views

Does prefetching/preloading in web browsers pose a security risk?

Today I googled the name of a domain that was reportedly serving up malware. My search results came up (with the compromised domain at the top of the list) and within seconds my AV gave an alert ...
5
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1answer
118 views

Browsers and HTTP Public Key Pinning

The strength of HTTP Public Key Pinning (HPKP) is that the browsers are saving the keys from the HTTP header and can check in the future if the certificate from the website is valid. I have two ...