Research Reveals How iPhone Push Notifications Leak User Data
Security researcher Tommy Mysk has demonstrated that iPhone push notifications are being used by popular apps to covertly send data about the user.
In a new video outlining the practice, Mysk highlighted how certain iOS apps exploit a feature introduced in iOS 10 that is designed to allow apps to customize push notifications. This feature, initially intended to enable apps to enrich notifications with additional content or decrypt encrypted messages, has seemingly been repurposed by some developers for more secretive activities. According to Mysk's findings, various popular applications, including TikTok, Facebook, Twitter, LinkedIn, and Bing, are using the short background execution time granted for notification customization to send analytics information.
This practice is particularly worrisome because it circumvents the typical restrictions imposed by iOS on background app activities. Apple has always maintained strict control over applications running in the background to protecting user privacy and ensure optimal device performance. However, the push notification feature appears to have unintentionally provided a backdoor for apps to conduct background data transmission.
The type of data being sent includes unique device signals that can be used for fingerprinting and tracking users across different apps. Fingerprinting is a method of collecting specific information about a device, such as its hardware and software configurations, to create a unique identifier for the user. This identifier can then be used to track the user's activities across different applications, which can then be used for various activities such as targeted advertising.
Apple does not permit fingerprinting and will soon require developers to explicitly state why their apps need access to APIs that are often used for fingerprinting. This move is in line with Apple's efforts to strengthen user privacy, such as the introduction of App Tracking Transparency in iOS 14.5, which requires apps to obtain user permission before tracking their activity across other companies' apps and websites.
Popular Stories
Next year's iPhone 18 Pro and iPhone 18 Pro Max will be equipped with under-screen Face ID, and the front camera will be moved to the top-left corner of the screen, according to a new report from The Information's Wayne Ma and Qianer Liu.
As a result of these changes, the report said the iPhone 18 Pro models will not have a pill-shaped Dynamic Island cutout at the top of the screen....
There's now a dedicated Apple Music app for ChatGPT, which allows ChatGPT to make music recommendations and build playlists.
Apple Music can be added to ChatGPT through the Settings section in the Mac app, website, or iOS app. Apple Music is listed under the apps option, and connecting to it requires signing in with your Apple Account for authorization purposes.
ChatGPT can be used to...
There has been a whirlwind of rumors over the last few days, sourced from leaked internal software designed for the iPhone and the Mac, and news sites like The Information. Below, we have a quick recap of everything we've heard this week, which serves as a guide to Apple's product plans in 2026 and beyond.
We've organized the info by likely release date, though there are some products that...
We have been covering iPhone 18 Pro, iPhone 17e, and iPhone Fold details from The Information's report about future iPhone models, and next up is the iPhone Air 2.
The report says that Apple aims to make the iPhone Air 2 more attractive in two ways.
First, Apple is apparently considering adding a second rear camera to the device, which would resolve a key limitation. The current iPhone...
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas.
We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features.
Transfer to Android
Apple is making it simpler...
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak.
As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code.
In some cases, it's obvious what the feature flags are referring to, while some are more...
Apple is developing a high-end iMac featuring the M5 Max chip, according to information from leaked internal software.
Subscribe to the MacRumors YouTube channel for more videos.
The finding comes from leaked kernel debug kit files used by Apple engineers. These kernel debug kit files enumerate unreleased Apple hardware by internal identifiers, such as codenames and platform names, and they...
An internal Apple kernel debug kit suggests Apple has tested a MacBook with the A15 chip, alongside a separate A18 Pro-based MacBook that appears to be closer to a shippable product.
The information comes from internal kernel debug kit files used by Apple engineers. The kit was accidentally released on Apple's website earlier this year, but it was quickly pulled after information started...
