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 [browser-extensions]

Browser extensions are additions to a web browser that provide extra functionality.

1
vote
0answers
33 views

Does the Steven Black hosts file make ad/tracking blocking browser add-ons unnecessary?

Does using the Steven Black hosts file make ad/tracking blocking browser add-ons more or less unnecessary, since it stops requests to ad/tracking servers at the kernel level? Reasons I can think of ...
2
votes
2answers
79 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 ...
1
vote
1answer
38 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'...
2
votes
0answers
24 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 ...
0
votes
0answers
29 views

Bitdefender showing lot of Getting Suspicious Connection Blocked from Chrome extension Toby

I'm using GetToby Chrome extension to manage my tabs and save them for later. Lately, I've been getting lots of notifications from BitDefender about blocked suspicious attempt: chrome.exe attempted ...
8
votes
1answer
640 views

Is Stylish safe to use again?

Stylish is/was a very popular extension for the Chrome and Firefox web browsers, which let users add custom styles to certain websites. I was using it myself, until a helpful fellow told me it was ...
0
votes
1answer
86 views

Why are there no browser feature or extension to only check the domain and username to prevent phishing?

One of the recommendations to prevent phishing using look-alike domain names (like www.google.com.phishing.org or IDN homograph attacks) is to use a password manager or a physical security token like ...
2
votes
1answer
95 views

I found a browser extension I don't trust installed, should I worry?

Someone told me that their Firefox had a strange new menu bar. I found that it was “FindYourMaps”. FindYourMaps is a deceptive browser toolbar that supposedly allows users to find driving ...
3
votes
2answers
133 views

Google Chrome extension wants to be able to “manage apps, extensions…”: reasonable?

One image can tell more than a thousand words... Is what this extension is asking for reasonable? There are (at least?) five actions it is requesting permission that I do not see what it would need ...
5
votes
1answer
689 views

Danger of browser extension without any permissions?

Assuming that an extension for Firefox or Chrome does not request any WebExtensions permission, what harm could this extension do? Or put another way: What (potentially malicious) actions can an ...
1
vote
0answers
74 views

Do WebEx's requirements open security holes?

After a WebEx presentation is recorded, the recording cannot be played in-browser without installing a browser extension that requires invasive permissions to access the user's data for all websites: ...
2
votes
1answer
92 views

Is it possible for page to get your installed extensions through javascript?

When you visit a page, could that page tell what extensions you are running if javascript is enabled? If so then could we stop them or at least make it extremely difficult to increase our privacy?
2
votes
1answer
103 views

Aren't browser extensions a critical security risk?

Lately, there was a lot of publicity given to such exotic security risks as Spectre and Meltdown, with immediate Pavlov reactions from Microsoft, Mozilla etc. However recently I came upon the (...
2
votes
1answer
46 views

Why/how is browser inserting inline SVGs at end of body?

Chrome is inserting the following SVG images at the bottom of pages: <span style="width: 24px; height: 24px; background: url(&quot;data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA/...
2
votes
1answer
88 views

GET, “mailto” warning - how can I tell if a site is secure?

My password manager is giving me a warning when I go to certain sites. They say if I think I can trust the site to go ahead and use it .... this leaves me concerned I'll miss something. The pop-up ...
1
vote
1answer
29 views

What happens when a Firefox blocked extension is already installed and enabled/disabled?

Mozilla has been busy blocking Firefox extensions from their ecosystem due to security and privacy concerns. What happens when a blocked Firefox extension is already installed and enabled? What ...
1
vote
1answer
42 views

How do modern browsers isolate different addons?

A user may have multiple addons installed on a browser. But typically, the browser is running in userspace with an unprivileged uid. I was wondering how modern browsers can, in such a setting, provide ...
8
votes
2answers
208 views

How to choose Chrome extensions with security in mind

I find myself more and more in need of using Chrome extensions, but the appallingly broad and intrusive permission requirements prevent me from installing any of them. Pretty much every extension I ...
3
votes
1answer
44 views

Prevent reflecting page modified by browser extension

Suppose there is a trusted browser extension in a chrome browser that modifies the web page (like editing DOM, appending scripts, etc) I don't want anyone but me to see the page modified by this ...
2
votes
0answers
45 views

How to secure communication between page and browser extension?

In my browser plugin I want to detect any use of a built-in JavaScript function. I override this function by injecting a piece of code onto the page. This code then triggers an event, and an event ...
0
votes
0answers
49 views

Is authorizating add-ons in this way secure?

I have a website, for which I made accompanying add-on to Firefox and Chrome. Both of those are distributed privately. In Firefox they can be installed only from my website, and for Chrome the link to ...
0
votes
0answers
42 views

Are there known cases when malicious Javascript or Chrome/Firefox extension copied certificate from browser?

I have a certificate that must be manually installed on my browser in order to have a secure connection with a specific website. Are there known cases of malicious Javascript or Chrome/Firefox ...
2
votes
1answer
185 views

How do password managers implement secure browser integration? [closed]

Some password managers can automatically fill passwords in user's browser. But for this auto-fill to be secure, they have to make sure they are putting password in the correct input field, plus, the ...
3
votes
0answers
44 views

Is it possible to “polyfill” a vulnerable Flash player to a users machine when they visit a web page?

This is about the concept of adding "necessary code" to a webpage to ensure that any client can view the "content" provided through that page. This sort of code is sometimes referred to as a polyfill. ...
3
votes
2answers
57 views

Testing an untrusted browser extension securely on macOS

I have received a .zip file containg a browser extension for Google Chrome. How can I test this safely? Current options I consider: 1) Using a VM. Installing VirtualBox on my macos, and then running ...
65
votes
6answers
12k views

Are there objective reasons to not allow Google Chrome extensions, but to allow Firefox extensions?

Recently, the company I work for has forbidden usage of any extensions in Chrome. They also do not allow account sync. This affected virtually all Web developers since they use Chrome to test their ...
3
votes
1answer
147 views

Web browser account security

Please note that I've looked what similar questions have been addressed, but all I found was partial discussions. My concerns is about web browser, password managers, cookies and sessions. My goal ...
1
vote
0answers
218 views

Check if a Websocket connection origins from a Chrome extension [closed]

I am writing an application that communicates with a Chrome extension via websocket connection. I wonder if there is a way to detect whether the connection actually origins from the extension. The ...
1
vote
0answers
90 views

Can websites collect browser data without using http requests? [closed]

Is it possible for a website to collect data such as the plugins/fonts installed without sending it thought http requests? If so, is there any plugin for any browser that tells the user what type of ...
1
vote
1answer
120 views

How do I tell whether my browser extensions leak personal data?

According to the article Warning: Your Browser Extensions Are Spying On You: Browser add-ons for Chrome, Firefox, and probably other browsers are tracking every single page you visit and sending ...
1
vote
1answer
731 views

Can my computer will be compromised by uBlock/Adblock filter list

uBlock is open source and suppose I trust the author. But filter lists are something that is maintained by other people. Is it possible to add something to filter list to compromise computer/browser, ...
8
votes
4answers
950 views

What are the effects of the Chrome Web Developer extension hijack?

Today, the owner of the rather popular Web Developer toolbar noticed it had been hijacked and replaced with a malicious version. He disabled it, but the malicious version (diff) had been in the wild ...
2
votes
1answer
72 views

How can I programatically keep track of number of certificate warnings in browser?

I want to keep a count of how many certificate warnings have been made in the browser over a period of several weeks. I also want to keep track of whether the user ignored these warnings and just ...
1
vote
1answer
106 views

Go.redirectro issue [closed]

I have a hijacker problem "Go.redirectro" And it gave ma a horrible headache​ I tried registry editor and take a file by file deep look at my drive and uh god it took me long time Look i am a ...
0
votes
2answers
271 views

Password manager: master password or not?

I use several browsers for several reasons (surfing, downloading files, logging into accounts...) but I prefer Chrome for doing "risky" things like browsing websites which I don't know whether they ...
1
vote
1answer
102 views

Should I use different browsers for surfing and logging into accounts?

I use web in different ways, i.e.: a) to log into my accounts (email, google, social, forums, etc.); b) for downloading softwares; c) for surfing trusted websites; d) for surfing websites which I ...
2
votes
1answer
518 views

TunnelBear VPN Chrome extension doesn't encrypt DNS Queries

I'm using a VPN provider in occurance TunnelBear and decided today to run Wireshark in parallel and found out that DNS resolutions are happening un-encrypted using OS default name resolution, e.g. ...
0
votes
1answer
237 views

Help! What is this remote takeover / malware from a pop up, and what does it do? [duplicate]

I was recently on yts.pe a torrent distribution site. When I clicked on a torrent, there was a pop up, which Chrome totally didn't block, even though it is set to block all pop-ups. Here are the ...
-1
votes
3answers
101 views

How to protect your web application's data against an injected Javscript?

I have a web application which interacts with two web servers. The response of the first one is stored temporarily on the browser (window.xyz=response.xyz) and when the user makes the request for ...
4
votes
1answer
197 views

Prevent Chrome extensions from betraying me

As has been discussed in this answer, a flaw with the Chrome Web Store is that an honest-but-naive developer may sell a popular browser extension to someone like Techno SoLotions, assuming that Techno ...
1
vote
2answers
363 views

Block Pop Up window using Javascript code

When a user enters his credentials in the login form of a web application, the credentials can be hacked through a malicious extension (that the user has installed). Now, suppose the malicious ...
4
votes
1answer
103 views

How secure is our privacy when using third party addons and extensions?

I use many addons and extensions in my browsers some of it is for ad blocking, taking screen shots and VPNs. This question came to my mind while using free VPN addons. I usually uses VPN addons for ...
64
votes
8answers
17k views

Why use HTTPS Everywhere when we have HSTS supported browsers?

I know that the browser's default protocol to access any site is http:// when https:// is explicitly not mentioned, but even then if we browse to a website say www.facebook.com, the response header ...
5
votes
2answers
527 views

LastPass vulnerability: Should LastPass users change all their passwords?

Reading about the recent vulnerability in LastPass extensions for FireFox and Chrome. The published exploit allows arbitrary code execution. The vulnerability also allowed access to stored passwords. ...
1
vote
4answers
88 views

To plugin or not to plugin?

Recently I did quite a research about internet browser related privacy. It hit me hard in the flesh myself, since I was part of the victims in the [WOT fiasco]1]. So I found out that usually way over ...
1
vote
1answer
445 views

Chrome users and malicious extensions

I have 2 users in Chrome. One is used for personal purposes has gmail box, google disk, etc. The second one is "business" user who has another configuration, it's own gmail, google disk, etc. Let's ...
2
votes
1answer
174 views

Plugins to increase security of Chrome? [closed]

What plugins are there for Chrome, that would increase security while browsing the web? For Firefox I have used NoScript, Flashblock, and AdBlock Plus, are there equivalents to these plugins for ...
0
votes
0answers
172 views

Mixed content call every second in chrome

I have been getting this error in my chrome console every second and all the websites are loading very slow. Following is the error: (unknown) Mixed Content: The page at 'https://www.google.co.in/?...
0
votes
0answers
14 views

How to deal with plugin that blocks access to Google Chrome settings? [duplicate]

A bad plugin has installed itself while I was closing several pop-ups on Google Chrome. I cannot assess my Google Chrome settings and its related section for the plug-in management anymore. Accessing ...
1
vote
0answers
158 views

Browser custom protocol handlers

The possibility of running a shell command from an extension (NPAPI) has been phased out, but custom protocol handlers are still supported. What is the practical difference if an extension can still ...