Firefox is a Web browser that is smaller, faster, and in some ways more secure than the Netscape browser from which much of its code was derived.

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Data exposed through campus proxy

I want to connect with Firefox to my university campus proxy, in order to access subscribed research journals, but first I need to know, which of the transmitted data through the network are visible ...
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11 views

How to disable typed arrays in firefox as rowhammer mitigation

I am concerned about the potential attack surface exposed by JavaScript typed arrays as a means of performing rowhammer attacks. Is it possible to disable (via official means or otherwise) typed ...
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3answers
4k views

Is Ghostery safe to use?

I've heard about Ghostery, a browser extension/plugin that blocks web trackers. But according to this link it sells our data. Are add-ons and plugins open source in Firefox? Is there another ...
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2answers
190 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 ...
2
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2answers
515 views

How safe are Firefox addons from official mozilla.org site?

I would like to install the Dictionary Pop-Up addon for Firefox. I usually don't install any addons, but this one looks especially tempting. I could not find any information on the Mozilla page, ...
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0answers
13 views

What is the goal of sign a key in BrowserID certificate?

I'm learning about the Mozilla Auth. it has an implementation of SRP protocol in https://github.com/mozilla/fxa-auth-server/blob/master/docs/overview.md and his client; example is ...
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1answer
86 views

Could the causes of CVE-2015-2502 vulnerability be common to Firefox and Chrome?

On Tuesday August 18, 2015, Microsoft published an advisory pointing out a 0-day vulnerability (CVE-2015-2502) that can be exploited by an attacker to perform a remote code execution on Internet ...
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2answers
174 views

Is Firefox on Ubuntu less secured (does it not confine Flash)?

Ubuntu Linux makes it easy to install Flash as soon as you encounter it. Just like Firefox on Windows really! Using Ubuntu's package it even provides security updates through the standard OS ...
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2answers
57 views

Is a server which FTP credentials were kept in a machine with Firefox being used compromised after the latest firefox vulnerability?

Since the vulnerability was specifically targeting FTP passwords in Windows machines there were used with things like Filezilla, can a server which SFTP credentials were kept in a windows machine ...
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1answer
134 views

Firefox trying to connect to other computers on the LAN

While running Wireshark trying to troubleshoot some other issues, I noticed several SYN connections to ports 80 and 443 on the workstation I was using. The packets were dropped. These were coming from ...
6
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1answer
65 views

Protection against clickjacking in Firefox without installing addons?

On some of my workstations I never allow Javascript in Firefox. The NoScript addon is installed on these machines, but I would like to remove it and disable Javascript via about:config instead. ...
9
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2answers
261 views

How secure is “Firefox Hello”?

The new "Firefox Hello" feature promises easy and safe video conversation. It is not nescessary to create an account, you simply share a link with your partner to start the conversation. The ...
8
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1answer
21k views

Firefox:Secure connection failed(Error code:ssl_error_weak_server_ephemeral_dh_key)

A screenshot of the problem: Browser: Firefox 39.0 Is this a problem with my browser? How can I solve this?
2
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1answer
110 views

What Firefox settings should be changed from factory defaults to ensure privacy vis-à-vis Mozilla?

Besides turning off everything in Edit/Preferences/Advanced/Data Choices and browser.newtabpage.directory.ping browser.newtabpage.directory.source browser.safebrowsing... ...
2
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0answers
93 views

Should Mozilla SSL3/RC4 whitelisted sites be blacklisted by admins/users? [closed]

As of Firefox 39, Mozilla has dropped support for SSL3 and RC4... and whitelisted 519 (!) non-compliant sites: ...
2
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2answers
73 views

Is it any more or less secure to delete all my cookies vs. individually logging out?

So I've lost all of my Firefox bookmarks (well not since 3.0) or history (3.5?) or my current session enough times (yeah... this still happens) that I don't leave my precious Firefox profile to ...
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1answer
61 views

Source code of Firefox Add-ons

How can I be sure that a browser add-on that is released under the GPL is actually really using the source code that was published? I read somewhere that the source code of Chrome add-ons is viewable ...
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1answer
112 views

What is safebrowsing.google.com ?Does it impact the security testing?

I recently security tested my web application using Firefox browser and while pentesting my webapplication i noticed safebrowsing.google.com,while i diged more about it ,i could able to retreive only ...
2
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2answers
68 views

ssl_error_bad_certificate_domain, does Firefox still validate the certificate? [duplicate]

I have a private NAS device. It uses a self-signed SSL certificate. I can import the cert into Firefox and everything works as long as I'm accessing the device from somewhere on the internet. SSL ...
1
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1answer
39 views

FireFTP security [closed]

I've just installed the FireFTP plugin for Firefox, I have been using Adobe Dreamweaver's FTP up to now but wanted to try something different. When I opened it up and saw all of my computer's files ...
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2answers
176 views

Security of Firefox extensions such as Mailvelope

I am asking these question because I am not very familiar with javascript or the Firefox plugin/extension system. The specific context is the Mailvelope pgp extension but the questions are general and ...
4
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2answers
2k views

How Do I Troubleshoot a Browser Hijack on a Mac?

My Mac is getting weird redirects with Safari and Chrome, however not with Mozilla Firefox. Since I cannot find software to do malware removal on Apple products or any good information, I am at a loss ...
7
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2answers
20k views

How do some sites detect AdBlock Plus? [closed]

For example this one disables function if AdBlock plus is detected, and it works. Is there a way to circumvent this?
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1answer
295 views

Does the browser still stores the website you visited Private Browsing [incognito Firefox]?

As they clearly state in their website they mention that What does Private Browsing not save? Visited pages: No pages will be added to the list of sites in the History menu, the Library window's ...
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3answers
358 views

Do I have to harden IE if I'm only using Firefox?

Assume a Windows 7 system (probably whatever home version comes with the machine), with the latest OS patches, latest IE and latest Firefox. Also assume that the user uses only Firefox for browsing, ...
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2answers
91 views

Browser Updated, yet still vulnerable to POODLE

So here's a situation, some of my company's partners notified us that they will be entirely disable their server's SSLv3 support. This prompts my superior to take this chance to update our operation ...
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1answer
691 views

Untrusted connection visiting https://www.opensource.apple.com/

Somebody on Stackoverflow posted some code from https://www.opensource.apple.com/ When I click this link in Firefox (36.0) it says "This Connection is Untrusted". But other people on that thread on ...
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4answers
836 views

Configure Firefox against malicious 302 redirect from a embedded image resource?

Today my friend demonstrated such a attack. I am using RenRen, a social networking website in a way very like Facebook in China. And I saw an article he wrote. Actually there is only an "image" ...
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0answers
62 views

Making the Firefox key and CSR creation process transparent

Background I was a bit surprised that several CAs do not allow anymore to send a plain old CSR in text form to them which was created in the classic fashion with OpenSSL or similar. But this would ...
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1answer
86 views

Are firefox bugs cross platform? [duplicate]

I use Ubuntu and last firefox version. I opened an image with firefox, and a crash occurred. Let's assume it's a crafted jpg to run an exploit, and execute arbitrary code. To sum up: (1) Firefox ...
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1answer
341 views

Fingerprint scanner browser support [closed]

I need to implement fingerprint scanning for all the users in a secure web app. Do fingerprint reader support chrome or firefox? From my google search they all seems to only be supported by IE. All ...
9
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2answers
899 views

How to improve the security and privacy of Firefox

What would be a sensible approach to enhance the security and privacy of Firefox? I did not find a question about this and I feel that some guidelines for casual web users would be handy. Currently ...
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0answers
40 views

How is the random string of Thunderbird's profile folder generated? [closed]

As per this link, Thinderbird creates a folder by name in the format ".default” where ”” is an eight digit string randomly generated by Thunderbird. But how is it generated? Which random generator ...
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2answers
3k views

Invalid OCSP signing certificate in OCSP response

I want to open the following page in Firefox, and get an error. https://www.acm.nl/nl/ Secure Connection Failed An error occurred during a connection to www.acm.nl. Invalid OCSP signing ...
4
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1answer
744 views

How does firefox sync password recovery work?

According to Mozilla Sync-new-security-model, Firefox servers are not able to decrypt your sync data without your password. So I figured that, the browser generates a key from your password, encrypts ...
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2answers
228 views

How to create secure portable firefox?

When I need to access our school web portal I need to access it with my certificate (pfx). Since certificate needs to be installed in browser, I'm thinking (out of security reasons) to create a ...
11
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2answers
942 views

How safe is it to use developer's version of the browsers [closed]

I have heard that the developer versions of browsers (chrome and firefox) are less secure than stable versions of them. Is it true? Is there any sense in using developer editions of browsers for ...
2
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2answers
208 views

Why Google Chrome complains about mozilla.org identity?

On a "brand new" (but fully updated) Windows XP installation (an Asus EeePC that I restored to factory setting and than updated with all Microsoft's upgrades) I installed a few days ago Google Chrome. ...
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1answer
204 views

Open source alternatives to tamper data

I'm developing a browser(firefox) plug-in which essentially checks for malicious input. My current approach is to store all input fields sent in GET/POST requests, try to heuristically determine ...
8
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3answers
3k views

Is Firefox Password Manager less secure than LastPass?

After installing the LastPass password manager, I am presented with a login dialog including the option to "Disable Insecure Firefox Password Manager". (This option appears as long as the Firefox ...
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1answer
71 views

Should one worry about using an outdated version of Firefox? [duplicate]

I have access (and the general public) to a computer lab with many workstations. Each workstation is identical in terms of software, hardware and the version of firefox. The version that is installed ...
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56 views

How to store the Firefox trust setting in a PKCS12 file?

A PKCS12 file typically contains a user's private key the corresponding certificate and the certificate of the authority. Firefox imports all three items during an import of a PKCS12 file. When the ...
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0answers
86 views

Untrusted Certificate Not just on my computer?

yesterday I tried going to several websites but an "untrusted certificate" warning popped up several times. Eventually it went away. I am the latest version of Mozilla Firefox. I also connect to ...
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2answers
338 views

bit.ly is not safe and an attack page? [duplicate]

I click on a bit.ly link on a Youtube video and I was fronted with this. I have used bit.ly before and I entered the url manually, but Firefox came up with this. Any ideas?
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2answers
144 views

Do browser add-ons increase security risk due to possible vulnerabilities

A large amount of people use add-ons such as NoScript or AdBlock to avoid exploitation by malicious JavaScript from advertisments. This decreases the risk of becoming the victim of web-exploits. But ...
0
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1answer
313 views

Privacy of web surfing by Free gate

I am connected to the internet in the university where I don't want the administrator or any organization to find out some of the websites and contents I check in them. I'm afraid that they might ...
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2answers
230 views

Xubuntu guest session security

lately I've been using the guest session on my xubuntu install because I am lazy and I was wondering what the security implications can be on the rest of the system if there is a web browser exploit ...
2
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0answers
224 views

Some http requests are not send encrypted by vpn! Why?

I subscribed to a VPN service recently, and installed wireshark to take a look at the traffic sent from my computer. Practically all of it goes through UDP protocol, encrypted. But there are two HTTP ...
4
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2answers
200 views

How do I check if a script is safe to run?

I've been using NoScript for a couple of years now but I can't seem to figure out which scripts are safe to allow and most of the time I just temporarily allow all the scripts. Is there a way to check ...
1
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1answer
185 views

Is drive-by-download possible with NoScript?

I am using and getting my friends to use NoScript, and the argument I usually have to use to convince them is "It prevent website to infect you without you downloading something (by yourself)". But ...