Apple Brings New Privacy Feature ‘Secure Exclave’ From M4 iPad Pro to iPhone 16 with A18 Chip

Highlights

• Apple introduced the Secure Exclave privacy feature with the M4 iPad Pro.
• The feature is now coming to the iPhone 16 with the A18 chip.
• Secure Exclave ensures user privacy with an extra layer of protection.
• The Secure Exclave includes a hardware-based Secure Indicator Light (SIL) that shows when the camera or microphone is in use.
• The sensor indicators are directly controlled through hardware providing stronger protection.

A18 chip-powered iPhone 16 to get a new privacy feature called “Secure Exclave.”

Earlier this year, Apple introduced a new privacy feature called “Secure Exclave” with the launch of the M4 iPad Pro. Now recent reports suggest Apple is bringing the same privacy feature to the A18 chip-powered iPhone 16.

Secure Exclave is designed to enhance user privacy.  It adds an extra layer of protection.

9to5Mac reports confirm Secure Exclave based on the iOS 18 firmware. According to the 9to5Mac report, the new SIL mechanism is also present in the A18 chip that powers all iPhone 16 models.

It is important to note that this Secure Exclave is different from the long-standing Secure Enclave, earlier used in Apple devices since the iPhone 5s to protect sensitive data like fingerprint information.

Developer Guilherme Rambo first revealed details about Secure Exclave in a post on social media platform Mastodon.

 Developer Guilherme Rambo on Mastodon revealing details of ‘Secure Exclave’ on M4 iPad.

On the M4 iPads, the Secure Exclave manages the rendering of the camera and microphone indicators on the OLED display. This makes it difficult for malicious apps to access these sensors without being noticed.

The privacy enhancement comes with the Secure Indicator Light (SIL). These were first introduced on the M4 iPad Pro earlier this year.

 Indicator lights such as tiny orange and green dots appear when these sensors are in use. (Image credit – 9to5Mac)

This hardware-based mechanism uses an indicator light such as the tiny orange and green dots when the camera or microphone is in use. The indicator light is displayed directly by the hardware. This makes it nearly impossible for malware or unauthorized apps to bypass the sensor indicators.

Earlier this year, Developer Guilherme Rambo was also the one to confirm these details in another post.

“Fun fact about the M4 iPad Pro: it’s the first device to support and use Apple’s new Secure Indicator Light (SIL) mechanism. When using the microphone or camera, the corresponding indicator dot is effectively rendered in hardware (using the display), making it a lot less likely that any malware or user space app would be able to access those sensors without the user’s knowledge,” Rambo posted on Mastodon.

We have previously seen Apple using camera and microphone usage indicators in iOS 14 through software triggers. However, the new Secure Exclave technology makes this protection even stronger as the indicators are controlled directly through hardware components and not any external software.

This adds an additional safeguard against unauthorized use of these sensors.

FAQs

Q1. What is Secure Exclave?

Answer. Secure Exclave is a new privacy feature introduced by Apple that adds an extra layer of protection for user data, first seen in the M4 iPad Pro and now in the iPhone 16 with the A18 chip.

Q2. What is the Secure Indicator Light (SIL)?

Answer: The Secure Indicator Light (SIL) is a hardware-based mechanism that shows when the camera or microphone is in use, making it difficult for unauthorized apps to access these sensors without being noticed.

Q3. How does Secure Exclave differ from Secure Enclave?

Answer. Unlike the older Secure Enclave, which used software triggers, Secure Exclave directly controls sensor indicators through hardware, providing stronger protection against unauthorized use of the camera and microphone.

Q4. How does Secure Exclave enhance privacy on the M4 iPad Pro?

Answer. On the M4 iPad Pro, Secure Exclave manages the rendering of camera and microphone indicators on the OLED display, making it difficult for malicious apps to access these sensors without being noticed.

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