1passwordPassword management app 1Password this week got a new feature on the web, and developer AgileBits described it as a way for users to check and make sure that their passwords aren't "pwned passwords," or passwords that have been leaked online. While the launch is web-only right now, AgileBits said it will be coming to 1Password apps in the future.

1Password's new feature integrates with a newly updated service by Troy Hunt -- who previously created a breach notification service called Have I Been Pwned -- and securely and privately checks your passwords against more than 500 million passwords collected from various breaches.

This way, users can further ensure that their passwords saved within 1Password are as secure as possible, and if Hunt's new service surfaces a warning about compromised data, they can change to a new one without leaving 1Password.

1password pwned passwords
Pwned Passwords originally launched as a feature within Have I Been Pwned last August, but Hunt has now updated it to version two and greatly expanded the amount of passwords indexed, originally starting with 320 million. For 1Password's integration, which is still just a proof of concept as of now, AgileBits said the feature is available today to everyone with a 1Password membership, and shared the following steps:

- Sign in to your account on 1Password.com.

- Click Open Vault to view the items in a vault, then click an item to see its details.

- Enter the magic keyboard sequence Shift-Control-Option-C (or Shift+Ctrl+Alt+C on Windows) to unlock the proof of concept.

- Click the Check Password button that appears next to your password.

Once you click "Check Password," 1Password will communicate with Hunt's service of indexed passwords, letting you know if yours exists in his database. As AgileBits pointed out, "If your password is found, it doesn't necessarily mean that your account was breached. Someone else could have been using the same password." Still, the company encouraged immediate action for any user who sees a confirmation of a password matching to Hunt's service.


In the announcement, AgileBits ensured that this communication with Pwned Passwords keeps user passwords "private and secure" because they are "never sent to us or his service." Hunt's service never receives the full password, and only requires the first five characters of each password hash. The developer stated, "we would never add it to 1Password unless it was private and secure."

First, 1Password hashes your password using SHA-1. But sending that full SHA-1 hash to the server would provide too much information and could allow someone to reconstruct your original password. Instead, Troy’s new service only requires the first five characters of the 40-character hash.

To complete the process, the server sends back a list of leaked password hashes that start with those same five characters. 1Password then compares this list locally to see if it contains the full hash of your password. If there is a match then we know this password is known and should be changed.

Hunt goes into more detail about Pwned Passwords in his own announcement post about the update to the service. AgileBits confirmed that it will be adding Pwned Passwords to its own security breach warning feature, called Watchtower, within 1Password apps "in future releases."

Top Rated Comments

Christoffee Avatar
83 months ago
Sometimes an idea is so obvious and fabulous I’m at a loss as to why it’s not been done before. I guess it’s only obvious once it’s obvious.
Score: 10 Votes (Like | Disagree)
wfrancis Avatar
83 months ago
It's a great program. I recommend it to everyone.
WAS a great program. It used to be standalone (the only reason I still use it) but they needlessly forced new users to switch to a subscription model so you have to keep buying it over and over again. No thanks.
Score: 9 Votes (Like | Disagree)
AGKyle Avatar
83 months ago
WAS a great program. It used to be standalone (the only reason I still use it) but they needlessly forced new users to switch to a subscription model so you have to keep buying it over and over again. No thanks.
We never removed the option to purchase a standalone license. As linked by others in this thread. It's also available via the Mac App Store app, feel free to check the available in-app purchases for proof of that.

Is it being kept up to date along with the subscription version?
Same question stands for the windows version
There is no difference between our standalone version of the app and the subscription version in terms of downloads. They're the same identical app. Bug fixes, improvements, and new features are added all the time. Some of those features may only be available for our subscription customers as they piggy back on features that are only possible due to our servers on the subscription side. But where possible we add features for both standalone customers and subscription customers.

SHA-1 is a worthless hash. There are rainbow tables for every possible entry. This service seems like it's a breach waiting to happen.
You missed the important bit. Your password is hashed.

Then we take the first 5 characters of the hash and send that over.

The Have I Been Pwned server takes these first 5 characters, compares to the database, finds all hashed passwords that match the first 5 characters and send those back to the client (1Password) which then checks the returned hashes to see if a match is made.

Your fully hashed password is never sent to the server, only the first 5 characters. Troy Hunt, the creator of Have I Been Pwned has stated that pretty much every 5 character prefix hash has ~500 results, and it's entirely possible that password isn't even in the results and is safe. So it really doesn't help much at all, combined with the fact no username or URL is sent.
Score: 8 Votes (Like | Disagree)
BigMcGuire Avatar
83 months ago
I had the grandfathered? app purchase from years and years ago and I never felt forced or even coerced by Agilebits to upgrade. I got the 1Password Family Teams plan recently - because I wanted to. Never once was I forced or more than a few times encouraged to get the Teams / subscription plan - this is something VERY FEW companies do. Most companies blast in your face: "UPGRADE NOW" every time you open the app. Because Agile bits didn't do this was a huge factor in my decision to upgrade. I will go out of my way to not upgrade when companies "force" or overly coerce.

So up until recently I was using the iCloud standalone app and want to voice my opinion that I was never forced or even slightly encouraged to upgrade via the application.
Score: 7 Votes (Like | Disagree)
Eidorian Avatar
83 months ago
It's a great program. I recommend it to everyone.
Score: 7 Votes (Like | Disagree)
justiny Avatar
83 months ago
WAS a great program. It used to be standalone (the only reason I still use it) but they needlessly forced new users to switch to a subscription model so you have to keep buying it over and over again. No thanks.
I disagree. When a developer continues to improve and enhance a high-quality application (specifically in the field of information security where threats evolve daily), I don’t mind them getting paid along the way.
Score: 6 Votes (Like | Disagree)

Popular Stories

Apple Vision Pro 2 Feature 2

Apple Reportedly Suspends Work on Vision Pro 2

Tuesday June 18, 2024 8:17 am PDT by
Apple has suspended work on the second-generation Vision Pro headset to singularly focus on a cheaper model, The Information reports. Apple was widely believed to have plans to divide its Vision product line into two models, with one "Pro" model and one lower-cost standard model. The company is said to have been deprioritizing the next Vision Pro headset over the past year, gradually...
Apple WWDC24 Apple Intelligence hero 240610

Apple Explains iPhone 15 Pro Requirement for Apple Intelligence

Wednesday June 19, 2024 4:48 am PDT by
With iOS 18, iPadOS 18, and macOS Sequoia, Apple is introducing a new personalized AI experience called Apple Intelligence that uses on-device, generative large-language models to enhance the user experience across iPhone, iPad, and Mac. These new AI features require Apple's latest iPhone 15 Pro and iPhone 15 Pro Max models to work, while only Macs and iPads with M1 or later chips will...
M4 Real Feature Red

M4 MacBook Pro Models Expected to Launch in Late 2024

Tuesday June 18, 2024 10:50 am PDT by
MacBook Pro models with an M4 chip are expected to launch in the fourth quarter of 2024, according to display analyst Ross Young. In a tweet for subscribers, Young said that panel shipments for new 14-inch and 16-inch MacBook Pro models are set to begin in the third quarter of 2024, which suggests a launch toward the end of the year. Apple started its M4 chip refresh in May with the launch...
2022 back to school apple feature

Apple's 2024 Back to School Sale Launching This Week

Monday June 17, 2024 12:27 pm PDT by
Apple will launch its annual Back to School promotion for university students in the United States and Canada this week, according to Bloomberg's Mark Gurman. Apple's back to school sales provide students with a free Apple gift card when purchasing a Mac or an iPad, and this year's promotion could help Apple push the new M2 iPad Air and M4 iPad Pro models. Last year, Apple offered U.S....
iOS 18 Calendar Feature

iOS 18: Calendar App Design Changes and Reminders Integration

Tuesday June 18, 2024 6:16 am PDT by
Apple in iOS 18 has given the Calendar app a major update, adding some welcome interface design changes, not to mention long-awaited integration with Reminders. In the month-by-month calendar view, the month now appears in large bold font in the top left, while the Events list toggle has been replaced by a new button that lets you choose between Compact, Stacked, Details, and List views. ...
watchOS 11 Thumb 2 1

watchOS 11 Supports Automatic Nap Detection

Monday June 17, 2024 4:05 pm PDT by
watchOS 11 appears to include a new feature that allows an Apple Watch to automatically detect and record when you're taking a nap. As shared on Reddit, an Apple Watch owner took a nap and was able to see the sleep data recorded in the Health app, despite not putting the device in Sleep Mode. Right now, the Apple Watch only tracks and records sleep when it is in Sleep Mode, and there is no...