iOS 15 Includes Secure Paste Feature That Hides the Clipboard From Developers

Tuesday June 8, 2021 11:30 am PDT by Juli Clover

iOS 15 has multiple significant privacy-focused improvements such as new protections in the Mail app to prevent tracking, an App Privacy section that shows you how often apps access sensitive information like location, and on-device Siri processing, but there are also some smaller but equally important changes.

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One of these updates is a new Secure Paste function for developers, which can be built into apps. With this feature implemented, users can paste something from a different app, with the content of what's copied hidden unless it's pasted into the developer's own app.

If secure paste is implemented, users can copy and paste from one app to another without being alerted through the clipboard notification that was introduced in iOS 14, giving them peace of mind that what they've copied is secure.

This feature sounds complicated, but it stems from a major privacy issue that surfaced last year. Back in March 2020, it came to light that many iPhone and iPad apps were "snooping" on pasteboard data, as developers could access whatever was on the pasteboard without the user being aware.

Apps like TikTok, Hotels.com, Reddit, Zillow and others could see whatever a user copied from another app, which was a concern because sometimes sensitive information like a password is copied.

Apple addressed this issue in iOS 14 by implementing a small banner that notifies you whenever an app accesses the clipboard, which means apps can no longer see the clipboard without your knowledge. iOS 15 takes it further with the secure paste feature that prevents developers from seeing the clipboard entirely unless you opt to copy something from one app and paste it into the app you're actively using.

With secure paste, developers can let users paste from a different app without having access to what was copied until the user takes action to paste it into their app. When developers use secure paste, users will be able to paste without being alerted via the pasteboard transparency notification, helping give them peace of mind.

After Apple first implemented the iOS 14 feature to unveil when apps were accessing the clipboard, many apps were found to be copying the clipboard on a frequent basis, though some apps like TikTok claimed that this was a mistake.

Related Forum: iOS 15

Top Rated Comments

mazz0

71 months ago

What a confusingly written article. I still have no idea what this feature means.

Score: 12 Votes (Like | Disagree)

alexkli

71 months ago

To clarify what’s happening as far as I understand it:

1. In the old days before iOS 14 the clipboard api was completely open. Once an app ran it could read what was on the clipboard using some “read clipboard” api. Users could not see this happening it at all.

2. After some malicious use cases where detected, Apple made a simple change with iOS 14 where it would show a banner to the user whenever an app calls the “read clipboard” api. That was all, apps could still read the clipboard if they wanted, it simply started to become noticeable.

3. Now with iOS 15 Apple is adding a new alternative clipboard api. This new api means apps can’t read the clipboard when they want but only after a user clicks on “paste”. This is actually what is done in modern browsers with the javascript clipboard api. It requires an active user interaction where the user knowingly says “yes, I want to paste this into the app”. Afterwards the app has that piece of content. But it prevents it from reading it without user interaction. It seems this is opt-in for apps, as probably Apple can’t change the behavior of the existing clipboard api to be more restrictive without breaking too many (good) apps out there.

For a user that means to treat that banner as a warning of something bad happening. “Good” apps should be switching to the new api going forward, so that user interaction is always required and that banner never pops up. Also wouldn’t be surprised if Apple might disable the old api entirely in a few years.

Score: 6 Votes (Like | Disagree)

FSMBP

71 months ago

I must be 100% naive because before iOS 14, I had no idea apps could 'see' what I had in my clipboard. Unless I pasted something, why should the app have access?

Edit: Grammar, spelling, carelessness.

Score: 6 Votes (Like | Disagree)

Apple_Robert

71 months ago

I was under the impression that password apps like 1Password already worked this way? For instance, on my Mac, I can paste something from 1Password but it doesn’t show up in the clipboard of the Paste app, which manages the clipboard. Another thing 1Password does by default is it clears your pasteboard a minute or so after you copy something from it (by default).

1Password is the exception because they made that action part of their app by default.

Score: 4 Votes (Like | Disagree)

mazz0

71 months ago

From what I saw...

1) If you copy material from the current app you are using, the developer of the app has no way to see what you copied.

2) If you copy material from one app and paste it into another app, the app being used will be able to see what you copied from the clipboard.

The way I interpreted it, it means...

1) App ABC can't read what's on your clipboard directly...

2) ...UNLESS that clipboard content was copied from app ABC. E.G. If you copy something from app XYZ, app ABC can't read it.

I believe pasting into input fields works fine, but the app won't be able to read your clipboard directly without action on your part. E.G. if you paste into a search field, the app can read the search field, but it can't gain access to your clipboard content directly unless that content came from the same app.

To be honest I’m still unclear.

Let’s see what Apple says: (https://www.apple.com/newsroom/2021/06/apple-advances-its-privacy-leadership-with-ios-15-ipados-15-macos-monterey-and-watchos-8/)

* With secure paste, developers can let users paste from a different app without having access to what was copied until the user takes action to paste it into their app. When developers use secure paste, users will be able to paste without being alerted via the pasteboard transparency notification, helping give them peace of mind.

So, if I’m understanding that correctly, you can set a permission so that your app is not able to see the clipboard except when a user-initiated paste occurs, in which case the notification doesn’t appear.

That’s it? Seems pointless to me. Seeing that notification when I manually-paste is not an inconvenience (in fact it’s a reassuring reminder that that feature exists). In fact given that seeing that notification increases my peace of mind, this change will actual lower it!

Score: 3 Votes (Like | Disagree)