firefoxlogoMozilla has announced a new security tool for users of its Firefox web browser. Called Firefox Monitor, the website lets visitors check if their accounts have been included in known data breaches and the types of data exposed in each breach.

The security tool is the result of a partnership between Mozilla and HaveIBeenPwned.com (HIBP), a site set up by security researcher Troy Hunt that includes a database of email addresses that are known to have been compromised in data breaches.

Thanks to the partnership, Firefox is able to check email addresses against the HIBP database via a method of anonymized data sharing (full details can be found in Troy Hunt's blog post). The new tool builds on Firefox's existing HIBP integration, which tells users if a site they are visiting was previously exposed in a data breach.

Firefox Monitor Homepage2
In February, password management app 1Password announced its own partnership with HIBP, which lets users check that their passwords haven't been leaked online. Since that time, developers AgileBits have built the Pwned Passwords database list into its 1Password desktop apps. As of today, users can also search HIBP from directly within 1Password via the Watchtower feature in the web version of the product.

Mozilla says it will begin trialling the new integration between HIBP and Firefox to make breach data searchable over the coming weeks.

Firefox Quantum is available for macOS as a free download directly from the Mozilla website.

Top Rated Comments

bLackjackj Avatar
82 months ago
If they are creating a hash of my email it can be reversed engineered back to my email. No thanks.
No it can't,..I don't know where you are making up this information from, but it's wrong.
Score: 4 Votes (Like | Disagree)
mrzz Avatar
82 months ago
I used to like the old pre-Firefox, “Mozilla” browser. Remember that?
I'm fine with speed improvements in FF58+ I
If they are creating a hash of my email it can be reversed engineered back to my email. No thanks.
I recommend you to read something about hashes.
Score: 4 Votes (Like | Disagree)
woodlandtrek Avatar
82 months ago
If they are creating a hash of my email it can be reversed engineered back to my email. No thanks.
Firefox will not only hash your email with SHA-1, it will send only the first 6 characters of that hash to HIBP. That amount of data is useless to try to recreate your email.
Score: 1 Votes (Like | Disagree)
mikes63737 Avatar
82 months ago
Your e-mail could be brute-forced from the hash -- but it cannot be reversed.

Eg, the service could say "I have a hash abf112bacd3489... is this hash equal to a@gmail.com? No? How about b@gmail.com? No?"

However, nobody... NOBODY is going to take the time to brute-force each individual email/hash. It would take way too much time and effort.
Score: 1 Votes (Like | Disagree)
JosephAW Avatar
82 months ago
I'm assuming you can opt out of this "feature" where they send your email to this third party?
Score: 1 Votes (Like | Disagree)
tothsa Avatar
82 months ago
I'm assuming you can opt out of this "feature" where they send your email to this third party?
Did you read the full article? It says Mozilla uses “anonymized data sharing” so your email address won’t be revealed to third parties!
Score: 1 Votes (Like | Disagree)

Popular Stories

Generic iOS 18

Apple Releases iOS 18.0.1 With Touch Screen Bug Fix and More

Thursday October 3, 2024 2:22 pm PDT by
Apple today released iOS 18.0.1 and iPadOS 18.0.1, the first updates to the iOS 18 and iPadOS 18 operating systems that debuted earlier in September. iOS 18.0.1 and iPadOS 18.0.1 come two weeks after the launch of iOS 18. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's release notes, the...
macOS Sequoia Night Feature

Apple Releases macOS Sequoia 15.0.1 With Bug Fixes

Thursday October 3, 2024 2:27 pm PDT by
Apple today released macOS Sequoia 15.0.1, the first update for the macOS Sequoia operating system. The 15.0.1 update comes a week after Apple first released macOS Sequoia 15. Mac users can download the ‌macOS Sequoia‌ update by using the Software Update section of System Settings. According to Apple's release notes, macOS Sequoia 15.0.1 fixes a bug that could cause the Messages app...
maxresdefault

Two Weeks With the iPhone 16 Pro Max

Friday October 4, 2024 12:04 pm PDT by
Now that it's been two weeks since the iPhone 16 models were released, we've been able to spend enough time with the new devices to share a more in-depth review on their performance, battery life, feature set, and more. Subscribe to the MacRumors YouTube channel for more videos. We've been testing the iPhone 16 Pro and Pro Max, but the gap between the Pro models and the standard iPhone 16...
Prime Big Deal Days Hero 3

The Best Early Prime Day Deals on AirPods, Apple Watch, and More

Friday October 4, 2024 10:43 am PDT by
Amazon is hosting another Prime Day event this year, called Amazon Prime Big Deal Days and offering shoppers the first chance to save on holiday shopping from a major retailer. Similar to the first Prime Day, it will last for two days (October 8-9) and you can already find a large selection of early deals across Amazon's storefront, covering savings on tech, clothing, video games, groceries, and...
top stories 5oct2024

Top Stories: iOS 18.1 Coming Soon, October Apple Event Rumors, and More

Saturday October 5, 2024 6:00 am PDT by
It's hard to believe we're already into October with the iPhone 16 launch behind us, but there's lots more still to come from Apple this year on both the hardware and software fronts. We're still expecting a number of Mac and perhaps some iPad updates in the very near future, while Apple Intelligence features are set to begin rolling out with iOS 18.1 and related operating system updates....
15 New Things Your iPhone Can Do in iOS 18

15 New Things Your iPhone Can Do in iOS 18.1

Friday September 27, 2024 6:14 am PDT by
Apple is set to release iOS 18.1 in October, bringing the first set of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update marks a significant step forward in Apple's AI integration, offering a new Siri contextually-aware experience and a range of additional capabilities powered by on-device machine learning and large language models. There are a couple of handy new...
ipad mini 2021 youtube

New Report Reveals When to Expect the iPad Mini 7

Tuesday October 1, 2024 2:09 pm PDT by
Apple is working on a new iPad mini that will "potentially" be released "by the end of 2024," according to a report today from Bloomberg's Mark Gurman. Last month, Gurman reported that Apple had "new iPads in the works," including an upgraded version of the iPad mini. At the time, he said the device was "on deck for Apple's October event" alongside the first M4 Macs. The wording in his...
M4 Real Feature Red

Gurman: Apple to Launch New M4 Macs and iPad Mini 7 on November 1

Sunday October 6, 2024 6:40 am PDT by
Apple will announce several new M4 Mac models around the end of October, with the company planning to launch at least some of them as soon as Friday, November 1, according to Bloomberg's Mark Gurman. Writing in his latest Power On newsletter, Gurman said that Apple will launch a new M4 version of its low-end 14-inch MacBook Pro, as well as higher-end 14-inch and 16-inch MacBook Pro models...