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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Regarding Windows password and Chrome's 'Remember password' Feature

Google Chrome browser helps in password management by prompting users to remember their passwords for the websites. These saved passwords can be accessed from the browsers "settings" menu, and to do ...
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252 views

Steps after getting hit with malware or browser exploits on Xubuntu

Well, today I was browsing the internet and I suddenly got redirected to a chinese hosted malware site and firefox started going crazy. I checked the url on virustotal with my phone and it found other ...
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241 views

How can I avoid Canvas Fingerprinting?

Canvas Fingerprinting has been getting a lot of press these last few days. Here is a study I read on this topic: 1 and 2 What can I do to keep browsing anonymously and avoid this tracking method?
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123 views

Is it safe to reuse a tab in a browser for different websites?

A friend of mine recently asserted that it is unsafe to reuse the same tab in a browser for different websites. In other words, if the user: Visits a sensitive website (for example logs in his bank ...
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954 views

Google Chrome browser warning for goo.gl

I am getting the solid red screen Chrome browser malware warning for Google's own URL shortening website, goo.gl as well as other sites such as bit.ly and delicious.com when I try to navigate there ...
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1answer
767 views

Is there any risk to enabling CORS with a wildcard on S3?

By default, Amazon S3 blocks cross-origin requests. However, it allows users the ability to set up per-bucket CORS policies. It offers fairly elaborate controls for which domains and methods the user ...
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3k views

Why does Safari seem to be accepting an HTTPS connection every other browser rejects?

This question is inspired by a bug/issue in recent Linksys router firmware. Essentially, something has changed recently that's preventing HTTPS access to the web admin on current generation Linksys ...
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2k views

Could a malicious JS file pointed on URL/URI attack the browser/computer?

I found some website blacklisted on Google. I mean when you try to visit them, you get something like shown on this picture: After a small search, I found that some of them have a malicious ...
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3answers
664 views

Is changing image's extension prone to error for browsers?

In my uploading user's avatar scenario, I change users picture extension to jpg. Is this making the browsers to act differently? Is it prone to error for browsers when they read users avatar? ...
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2k views

Can cookies reveal my email address?

When I visit livescore.com, ten seconds later I receive marketing emails from gambling companies. If I don't visit this site, I don't receive these emails. Similar things happen when I visit Twitter ...
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598 views

Is silverlight and Java running on the web browser capable of saving “state” into the user's local machines?

I am aware that even after we have cleared our cache and cookies, websites can still save files/information into our computer using Flash (Flash ever cookies), I was wondering does other plugins like ...
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8k views

how can you inject malicious code into an innocent-looking URL?

I am learning about XSS attacks. Wikipedia says that in a non-persistent attack an attacker may provide an innocent-looking URL that "points to a trusted site but actually has an XSS vector." What ...
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2answers
648 views

Can one get infected through visiting a site with a PHP script on it and if yes, how?

I can imagine a clientside JavaScript that gets executed in a vulnerable browser to do some harm, but how can this be done with PHP? Since it's serverside it shouldn't have access to the visitor's ...
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3answers
6k views

Benefit to disabling TLS1.1 and TLS1.2?

In light of recent developments on SSL issues such as BEAST and POODLE, I decided to configure my browser to only allow TLS1.1 and higher. The trouble is, that I am finding a lot of websites which do ...
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2answers
1k views

How does the Yahoo webmail exploit work?

I got an email (referring to me by name) from somebody I knew a while ago and the email itself was just two/three lines containing a bit-ly link. Although it seemed like it actually could be ...
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2answers
3k views

How is it possible that a virus can infect the system if the browser is started with non-admin rights

If I open my web browser (for example firefox) in Windows 7 with activated UAC as normal user (non admin) a virus - which uses a security leak in my browser - will only gets privileges of the normal ...
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267 views

Attack where browser URL appears valid

I remember reading about an attack where the "location bar" in a user's browser displays a valid URL (e.g. https://www.paypal.com/), but the traffic is really being directed to or intercepted by an ...
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2k views

What XSS attacks doesn't “Reflective XSS Protection” defeat?

Its been quite a while since I have played with cross site scripting vulnerabilities but today I came across a website today that was crying out to be tested for a basic XSS vulnerability. So ...
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680 views

SSL, SSH, OPENVPN, etc which one?

To start with I am not a security professional, in fact I am on the other end of the spectrum. In the opinion of people on this site what would you choose for secure internet browsing. I will be ...
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590 views

Is flash or javascript a bigger security concern? [closed]

Many flash website whitelisting extensions for chrome (such as flashblock and flashcontrol) use javascript in order to selectively block Adobe Flash from functioning. Thus, In order to get this ...
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3answers
1k views

External cross domain include script

One of my web application underwent a vulnerability assessment recently, and one of the findings is about cross domain include script. Our web app uses addthis_widget.js from AddThis to bookmark ...
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2answers
3k views

UTF-7 XSS attacks in modern browsers

I've recently read about utf-7 XSS-attacks (i.e. Ned Batchelders article at http://nedbatchelder.com/blog/200704/xss_with_utf7.html) but could not get any UTF-7 attack to work in modern browsers. (I ...
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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
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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1answer
554 views

generating RSA keys through the browser

HTML5 has the element that sends an SPKAC to the server (as I understand it). But how do you do it in IE? One CA's websites gives me the following prompt: This Web site is attempting to perform a ...
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3k views

Does Java applets reveal the real IP address, even when using proxy or vpn?

Can a Java applet reveal the original client IP address, when browsing through a proxy or a VPN? Why?
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263 views

How will users know if their session is DNSSec protected or not?

There is definite security value in having DNSSec-verified connections, however I have yet to see software indicate if the connection is secure. Ultimately I would like my users to recognize that ...
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2k views

sslstrip vs. privoxy redirect rule on clients

I watched this video: http://www.securitytube.net/video/193 Now I'm thinking about an example. Suppose I have a privoxy proxy on my PC: user.action file (just part of it): { ...
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3answers
167 views

When downloading from an https web page - will the download also use ssl?

If I click on a download link on a page that uses ssl, will the download also use ssl? If the answer is not (or: sometimes yes, sometimes not) - is there any way I can force it to be protected? I'm ...
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3answers
1k views

JInitiator is obsolete and I should reject it on grounds of security, right?

I'm getting a lot of flack and resistance from developers for not allowing a large (200+ users) roll-out of Oracle's JInitiator (http://www.oracle.com/technetwork/testcontent/jinit-084453.html) as ...
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1answer
386 views

Do iframes maintain the security of the nested website?

I am planning to add iframes to my webpage to sites such as www.dropbox.com and was wondering if the security of the site would be impaired if i did this. As in, could peoples account be hacked if ...
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1answer
477 views

How did my homepage get changed in IE?

I have rarely used IE in the past. I just use it to test how a website looks. Today all of a sudden when I went on to open IE, it opened with a homepage that wasn't set by me. It was an address of a ...
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215 views

Is using a “Red” and a “Green” browser to balance LOB requirements and security a good approach?

I currently work in a manufacturing company with round about 5000 computers and 6000 employees. We use a lot of web based line of business applications (all internal, non over the Internet) in order ...
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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 ...
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3answers
1k 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 ...
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3answers
10k views

How to prevent installation of Google Chrome extensions

You can prevent the installation of Google chrome extensions on a Desktop?
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1answer
6k views

Is using RC4-MD5/RC4-SHA as SSL ciphers enough for most purpose?

In the AWS ELB, I have uploaded a cert and only selected "RC4-MD5" + "RC4-SHA" as the ciphers and scored A in the ssltest [1] If I using the default ELB setting, I can only score a C Since I am not ...
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1answer
6k views

Can your Windows or Linux username be exposed to websites?

For example: Accessing a website with javascript enabled can expose information such as browser, fonts and local time. Can it, theoretically, expose your Windows or Linux username? Will saving a ...
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2answers
345 views

Security of viewing a website containing Java applets offline

I've been wondering whether viewing a website offline increases the security risk. The reason why I'm asking is that having been a short time java applet developer (for a small task) I've come to ...
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2answers
143 views

SSLStrip still HTTPS

I did all the configuration right. IPtables, port forwarding, ARPspoof, everything. However, in the browser websites like Facebook and Twitter are still HTTPS. What am I doing wrong?
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3answers
173 views

HOW is the malicious URL/payload is delivered to the user on a DOM based XSS attack?

Testing for DOM based XSS at OWASP reads: The first hypothetical example uses the following client side code: <script> document.write("Site is at: " + document.location.href + "."); ...
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1answer
376 views

How to authenticate in a website with public/private keys?

I've been reading how the SSH public/private key works and realized how handy they are (taking the secure out of the equation). And started to wonder why websites do not implement the same thing? ...
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2answers
381 views

On an “uncritical” site, is there any reason to NOT trust a self-signed certificate?

There are many sites that have self-signed ("untrusted" in Firefox) certificates. I then have the option to trust them or not. If I not trust them I can either leave the site or only visit the site ...
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3answers
422 views

Security of a Windows XP system after April 8th when running the latest Firefox or Chrome

As we all know, Microsoft stops developing security patches for Windows XP very soon. If a bug in the kernel was to be found that would allow an attacker to take control by, say, sending a specially ...
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1answer
145 views

Security consequence of Javascript hole in an online chat?

For an online chat that allows basic HTML, what happens if they leave an open way for a potential hacker to execute javascript on everyone who is in the chat? What is the worst thing they could do?
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1answer
163 views

Resources/materials for implementing secure web services?

I'm implementing a REST-style (note: it needs to be more pragmatic than canonical) web API and I would like to secure it. The language I'm using is rather fresh and doesn't have a lot of high quality ...
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1answer
14k views

How does DHE-RSA-AES256-SHA compare to RC4 as the Cipher for SSL?

I read a lot of issue [1] currently stating that RC4 is broken and is at risk. I just checked my web server (nginx) and it is using the default settings, which is DHE-RSA-AES256-SHA How does this ...
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638 views

Updated version of Browser Security Handbook

Google's Browser Security Handbook is a brilliant resource for web application security, and in particular, for understanding how browsers behave. It discusses many issues, and contains tables ...
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1k views

Different SSL states as seen by Safari, Chrome and Firefox

Today, I visited some sites of the German DHL group. While Chrome and Safari complain about an invalid certificate of Firefox accepts it. Which one is right, which one is wrong? Which decision ...
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1answer
207 views

How can browser select suggestions for my private searches?

I use a VPN service that provides a pool of IP addresses, I clean history/cookies/etc - all the browsing data before a session. Regardless, when I type in the search of one particular search engine, ...