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2 votes
0 answers
282 views

What is the threat-model of a malicious browser-extension accessing the data of *another browser-extension* that is security-critical?

Modern password-managers are moving towards a "fully-in-the-browser" model (see: historical RCE on LastPass, and now 1Password is also moving towards 1Password X as "the future" ...
ELLIOTTCABLE's user avatar
38 votes
1 answer
7k views

Can a browser extension (Chrome, Firefox, etc.) read the web console log?

I realized that my bank handles sensitive information in the web console log, so my concern is if any browser extension could read the log?
Nyan D' Sparkle's user avatar
8 votes
3 answers
2k views

Browser setups to stay safe from malware and unwanted stuff

I have to set up a browser to surf the internet. I'm trying to stay safe from malware as much as possible. (I already know that there's no way to stay 100% safe.) My idea is to use Firefox with these ...
secon25's user avatar
  • 83
11 votes
1 answer
1k 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 ...
tim's user avatar
  • 29.8k
64 votes
6 answers
13k 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 ...
Alexei's user avatar
  • 2,193
1 vote
0 answers
460 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 ...
Thanh Bui's user avatar
  • 252
1 vote
1 answer
3k views

Can my computer 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 a filter list to compromise computer/browser,...
ceth's user avatar
  • 715
3 votes
1 answer
218 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 ...
Eka's user avatar
  • 569
5 votes
2 answers
738 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. ...
mcgyver5's user avatar
  • 6,923
2 votes
2 answers
3k views

Firefox vs. Chrome extensions: Which are---ceteris paribus---more secure?

As an 'extension' to earlier questions on this topic (for instance here and here), What makes Firefox extensions (appear) more secure than Chrome extensions? Do they just appear to be more secure, or ...
nutty about natty's user avatar
32 votes
3 answers
5k views

Are official browser add-ons really safe?

Almost any browser addon/extension that I install on my Chrome or Firefox (be it Firebug, RESTClient, ...) warns me, saying: It [the add-on] can: Access your data on all website Access ...
Harry's user avatar
  • 841
12 votes
3 answers
5k views

Any tool for scanning vulnerabilities in browser extensions? [closed]

I am scanning browser extensions of Chrome and Firefox for vulnerabilities. Is there any tool which would help me do this?
TheRookierLearner's user avatar