Questions tagged [web-browser]

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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1answer
142 views

Inspect Element Prevention?

I was just actually wondering if there is a permanent way of preventing or disabling inspect element on client-side? Assuming with inspect element you could change values in hidden forms as well as ...
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Is it possible to track/save Google searches that were never submitted?

When you start typing out a google search, it lists a bunch of options to autocomplete your search. This made me wonder how that autocomplete works. Is there a cache stored somewhere in the browser? ...
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Browser Exploiting - Using SyncManager to keep Service Workers alive forever

I just read the paper "Master of Web Puppets: Abusing Web Browsers for Persistent and Stealthy Computation". The authors claim to use the SyncManager Interface in order to keep Service Workers alive ...
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CDN change for “enhanced security”? (now uses cookies)

For the past few months, I've been unable to continue a particular course on udemy. I can access all other video courses accept that particular course and their support has answered "We recently ...
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1answer
97 views

What mechanism does Firefox use to remember the in-session logins, after entering the Master Password?

After I have entered my Master Password, does Firefox decrypt all the logins and store them somewhere? Or does it store the Master Password itself? Is the in-session period (more) vulnerable to attack?...
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116 views

How to hide my platform from a browser to keep my privacy? [duplicate]

I just visited https://amiunique.org/fp in order to try to understand what makes a web page realize what platform it is running on, aside from User-Agent request header. So I learned about window....
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226 views

Is LocalStorage in web browsers safe enough to store passwords?

I currently have a system I'm building where users can enter an email address and password into my login page, and if they click the signup button after doing that, it stores that data in LocalStorage,...
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1answer
393 views

How can I inject cookie from Wireshark into a browser sesson [duplicate]

For education and research purpose, I need to inject a cookie value into my browser to allow me login indirectly (without entering the user name and password). I collected traffic during a login ...
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1answer
83 views

Is using a web service in a browser safer than running it natively installed? [closed]

let's take a theoretical app that has both an installable version and a web version. I use it via my web browser or I can install the app. What are the safety considerations for the host operating ...
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176 views

Does HTTP:// to HTTPS:// redirection means strict HTTPS from server

when I try to connect to some websites using http:// (notice the absence of s) , my client end up with https://. I use python requests for this purpose, which simulate a client behavior. It performs ...
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83 views

How to check if all PC programs are using the VPN's IP?

With browsers you can go to websites that specifically check your IP to see if your VPN's IP is there. But how do you check if all the other programs or applications on your computer are going through ...
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1answer
107 views

Is it safe to let the user name an object key in JavaScript?

Recently I found a piece of code that takes input from the url. The input then get's saved into a javascript object: https://website.com/?foo=bar var x = {"foo": "bar"}; While the value doesn't ...
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What “stability and security will suffer” by using a browser with the --no-sandbox flag?

Starting Brave browser (on linux manjaro) shows a “You are using an unsupported command-line flag: --no-sandbox. Stability and security will suffer.” message. Reading the support forums it seems that ...
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2answers
275 views

Why were hyperlink auditing pings used for DDoS attacks and not any other requests?

A few days ago this new story has been published: Researchers have found that the HTML feature called hyperlink auditing, or pings, is being used to perform DDoS attacks against various sites. This ...
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Is an up-to-date browser secure on an out-of-date OS?

Windows 7 support will end on January 14, 2020. Assuming that after that day I still use an updated browser, is it true that I'm still safe? Can it "patch" the OS-based security holes? Minor question:...
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Is JIT-compiler required for JIT-ROP attack?

I have been studying up on the concept of Just-in-Time (JIT) ROP attack (https://cs.unc.edu/~fabian/papers/oakland2013.pdf), and came across this question which I have not been able to find the ...
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291 views

How can Opera browser access my sessions on Google Chrome?

I just installed Opera browser v60 (i.e. Reborn 3) on Windows 10. I noticed that it has automatically (without my consent and permission) taken all my bookmarks in Google Chrome and added to the ...
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73 views

If the user agent contains information that could potentially be abused, why would every browser send it to every website?

As far as I've seen, every browser I use have a long User-Agent HTTP header that is as detailed as that it contains specific browser versions (or can be used to accurately deduce browser version, ...
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1answer
300 views

How do HTML5 DRM addons protect their output?

HTML5 has a DRM framework Encrypted Media Extensions (EME), that allows DRM companies to create content decryption modules (CDM) to decrypt DRM protected content. Browsers should use a sandbox to run ...
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68 views

Persistent HTML form data across sessions

I'm currently testing an application which appears to have a somewhat persistent HTML form data storage, yet I don't understand how. UserA logs in Fills form with custom data Logs out before sending ...
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1answer
80 views

How to defend myself against potential malicious browser add-ons?

So previously I asked a question about what type of private data can addons extract from my browser : Can a malicious add-on access internet history and such in Chrome/Firefox? and it turns out if ...
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Embeddable 3rd party web tools security against stealing the key

We are building a website and we are using plenty of third-party tools that basically give you an HTML script tag and ask you to place it into your index.html. A few examples of such tools are: ...
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2answers
3k views

Can a malicious add-on access internet history and such in Chrome/Firefox?

How does Chrome/Firefox make sure add-ons are safe? Do they have any protection against a malicious add-on? How much access can add-ons have? Can they access internet history or maybe even cookies ...
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1answer
121 views

Why does Amazon verify a TLS certificate?

Show site information, then Connection for https://support.mozilla.org indicates Verified by: Amazon Why is this? Is Amazon spying on me?
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5answers
325 views

Is my Google Drive still secure if Chrome was heavily compromised?

I use an Apple eMac desktop computer. I formerly used Safari as my main browser. I migrated to Chrome as it is integrated with Google products. I use Google Drive very extensively as my main ...
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2answers
41 views

Insecure Direct Object Reference - Change email from client end

I am testing a website that has "Forgot my password" functionality. If user clicks that, his email address will be displayed as a hyperlink. If that is clicked, an email to reset password will be ...
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1answer
98 views

Virtualized or Container (Remote) Based Browser Isolation is more secure?

There obvious costs differences between them but I am not sure from a security perspective which of them considered to be more secure.
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78 views

Will browser isolation solution protect our enterprise from Flash and JavaScript exploits and fileless malware?

Since we didn't see any pentest done to bypass on such solution, we don't really know if it worth purchasing such type of solution. Will this really protect us from Flash and JavaScript exploits, ...
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83 views

What prevents a third party to use public API keys

In many cases, I have to add a public API key to my website (or application). For instance, in order to have an embedded map on a website, one could use google maps, and be required to provide an API ...
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113 views

Redirection to a blank page after searching on Google with the search bar of Firefox

Today I tried to use the search bar in the top-right side of Firefox (ver 65.0 64-bit on Linux Mint 18.3 Sylvia 64-bit), and the search bar contains "search Google in Traditional Chinese". When I use ...
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2answers
12k views

Is this Paypal Github SDK reference really a dangerous site?

I'm working on integrating a payment system with paypal in C#, and I installed the official paypal nuget package. Then I went to the paypal github site. And linked to this below site (SDK Reference). ...
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Are there any security implications to leaving Firefox's advanced developer tools enabled?

Mozilla's Firefox web browser has two advanced developer tools settings that are disabled by default. To enable them, open the Developer Tools settings, go to the section "Advanced Settings", and ...
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1answer
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Random Chrome Notifications and Strange Source Code

My elderly parents are receiving chrome notifications from a strange URL on their iMac: (https://s1.snc.com.ru:443) Example Messages • Pending Payment: Paypal Has Sent You $65,900 • Clean your mac....
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How to determine if a website has been hijacked?

I noticed that the URL of a website I sometimes visit was redirecting to a new URL. I noticed this through a tool that I use that does not actually load the new URL. I was surprised by this change, ...
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1answer
61 views

Would cookie always change when browser changes?

I have been told that when the browser changes, the cookie will also change. If a user uses same machine, same IP, but different browser, is there any case that the cookie could stay the same? Or it'...
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2answers
60 views

3rd Party trackers and online privacy

I don't feel the internet is respecting our individual right to privacy. Why are 3rd party trackers allowed to siphon data from us without our permission? We should selectively be able to reveal what ...
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0answers
116 views

Sandboxing untrusted JavaScript execution by redeclaring variables

Some irrelevant background (read only if you want to say "no, just use an iframe") Scenario Suppose that I downloaded a string jsCode containing arbitrary JavaScript code from a (potentially ...
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1answer
56 views

Custom JavaScript injection allowed in DOM of other origins [closed]

I am performing a security research on a development framework for thick client & mobile applications. The framework allows developers to inject custom JavaScript in the DOM of any origin. This ...
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45 views

Javascript code instead of requested page

I am trying to access a third party website. For one of the requests, the browser displays some source code instead of rendering the response. Does this come under security issue? The source code has ...
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1answer
223 views

What is the protocol used for authentication/authorization of my internet access using account inside web browser?

Our university uses Microtik devices and a 3rd party application to manage our access to web and internet services. When I open browser in my desktop or connect to a wi-fi access point, it prompt that ...
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2answers
214 views

Are some privacy add-ons superfluous when using Tor browser?

If running the Tor browser, should you still have the same privacy add-ons as you would if you were running a "regular" browser? Or will some of them be superfluous because of the built-in ...
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1answer
218 views

Understanding which privacy tools provide very similar functionality

https://amiunique.org/tools has a list of recommended privacy tools. uBlock Ghostery HTTPS Everywhere Lightbeam AdBlock Plus Disconnect Privacy Badger NoScript Self-destructing cookies However, aren'...
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1answer
365 views

Opera browser: no master password?

I've recently moved from Firefox to Opera (for performance issues). I used to protect my passwords in Firefox with a Master Password. But Opera, so it appears, lacks such feature. I use Debian 9.7 ...
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1answer
336 views

What's the security concern of browsers using the HTTP CONNECT method?

The XMLHttpRequest spec says that attempted usage of the CONNECT method should throw a security error. Is there a security issue with client-side JavaScript sending CONNECT requests to servers? It ...
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0answers
85 views

How to check if installed Trusted CAs are not dangerous? [duplicate]

I've checked my Windows 7 installed Trusted Certificate Authorities using MMC tool as below: Questions are: How can I be sure that they are genuine and are installed by Microsoft and not by a third-...
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1answer
503 views

How to verify website owner behind CloudFlare SSL?

I went to Bittrex today and noticed the SSL certificate is issued to CloudFlare, not Bittrex, as seen in the screenshot below. I'm used to seeing information on this screen which can be recognized as ...
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43 views

What information can be obtained with my public ip? [duplicate]

As I understand it, my public ip is known for everyone who communicates with me over the internet. I'm concerned about security, and my doubt is, what can a malicious agent find out about me by ...
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2answers
418 views

Can a web app fingerprint your device as identical to a native app's fingeprint

I have installed an app on Android and my account got shadowbanned. I sniffed out the traffic with fiddler and see they use a analytics service that assigns your device a fingerprint. I tried the web ...
2
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1answer
696 views

Smart cards and the behaviour of the browser. Is the PIN cached?

When using smart cards for certificate-based authentication, is the PIN entered by the user to authenticate his smart card to the browser is cached? OR does the certificate gets cached by the browser? ...
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0answers
37 views

Collecting PII in an iframe on any website. Is it Safe?

I am building a chrome extension that allows users to submit a form on any website. Once a user would visit a certain website, extension would open iframe on that website and ask user for some PII in ...