Fix iPhone error that detected deleted signal messages

TLDR

• Apple is fixing an iPhone bug that displays deleted Signal messages via notifications

• AAPL stock rose 2.63% as Apple patched a major flaw in iOS notifications

• An iPhone bug allowed the FBI to access previews of deleted Signal messages

• Apple update removes cached notifications showing private conversations

• Signal flaw highlights risks in the iPhone’s notification storage system

Apple (AAPL) stock rose as the company addressed a serious iPhone flaw that led to private messages being exposed. Apple Inc. shut down. At $273.17, up 2.63%, before falling to $272.11 in pre-market trading. The update removed a security vulnerability that allowed deleted Signal messages to remain accessible on devices.

Apple Inc., AAPL

Revealing a security vulnerability in Signal application message data

404 Media revealed the flaw after reviewing court documents associated with A Federal investigation. The report showed that the FBI accessed cached message previews stored in iPhone notification databases. These previews remained even after users enabled disappearing messages and removed the app.

The issue affected Signal, which relies on end-to-end encryption for secure communication. However, the flaw bypassed encryption by exposing message previews stored locally on the device. As a result, forensic tools recovered readable message content without directly accessing encrypted conversations.

Signal Command reacted quickly after the report gained attention from the security community. Meredith Whitaker urged Apple to remove stored notification data associated with deleted messages. Meanwhile, rival platforms have also highlighted the broader risks associated with notification preview systems.

Apple’s patch removes retained notification data

apple It released a software update that fixes how the system handles deleted notifications. The company confirmed that notifications marked for deletion could unexpectedly remain stored on affected devices. The patch ensures that the system clears this data as soon as users delete apps or enable disappearing messages.

The vulnerability, named CVE-2026-28950, has been resolved through updates across iOS and iPadOS versions. Apple published fixes in iOS 26.4.2 and iOS 18.7.8, covering newer and older devices. Therefore, users who install the update automatically remove previously stored message previews.

Apple has not confirmed whether attackers actively exploited the flaw outside of controlled investigations. However, the fix addresses concerns about device-level data exposure beyond the protection of encrypted messages. The update also reinforces Apple’s broader push to improve user privacy controls across its ecosystem.

Wider implications for message privacy

The incident highlights the gap between encryption systems and device-level data processing. While applications secure messages in transit, operating systems may continue to store readable data in other forms. Notification previews can create unintended exposure risks if not managed properly.

Pavel Durov commented on the issue and cited notification previews as a weakness. cable I’ve long emphasized optional privacy controls that limit the content of a visual message. This approach reduces the amount of readable data stored outside of encrypted environments.

Apple’s overhaul falls in line with growing scrutiny around mobile privacy and forensic data mining methods. The case illustrates how system-level features can affect even highly secure applications. As a result, developers and platform providers now face stronger pressure to bridge the gaps between encryption and device storage behavior.