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Apple Issues 16-Page Document on Why It Thinks Sideloading Is Bad

The document doesn’t entertain the potential benefits to opening up the iOS ecosystem. Instead, it focuses on several examples to how sideloading could unleash scams and malware on iPhone users.

 & Michael Kan Principal Reporter

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Have dreams of sideloading a third-party app on your iPhone? Well, Apple is here to crush them. 

On Wednesday, the company released a 16-page document talking up all the privacy and security benefits to Apple’s “walled garden” approach with the iOS App Store. 

The document reiterates the company’s long standing argument that Apple’s walled garden protects iPhone users from all kinds of threats. Hence, sideloading, or the ability to download apps from third-party app stores, would open the floodgates, and unleash all kinds of scams on iOS users everywhere. 

“Because of the large size of the iPhone user base and the sensitive data stored on their phones —photos, location data, health and financial information— allowing sideloading would spur a flood of new investment into attacks on the platform,” the company writes.

Apple's privacy document
(Credit: Apple)

The document arrives as Apple’s control of the iOS app store is under threat. The company is facing an antitrust lawsuit from Epic Games, demanding the court end Apple’s alleged monopoly over the iOS ecosystem. Other lawsuits are also seeking to sue Cupertino for forcing iPhone owners to download apps from a single app store.  

Apple certainly has good reasons to keep the iOS ecosystem locked down. For one, the company generates billions of dollars each year by taking a cut of all sales made over the iOS App Store. 

But you won’t find any mention of this in Apple’s 16-page document, which doesn’t entertain any potential benefits to opening up the iOS ecosystem. Instead, the document focuses on several examples on why sideloading is allegedly bad for consumers. 

Image from Apple document
(Credit: Apple)

The company paints a scenario where some apps are exclusively made available on third-party app stores. So consumers have no choice but to download them from sources outside Apple. However, the same third-party app stores have shoddy security, making them ripe to distribute programs that secretly contain malware or unwarranted data tracking.  

“In the end, users would have to constantly be on the lookout for scams, never knowing who or what to trust, and as a result many users would download fewer apps from fewer developers,” the company writes. 

Image from Apple document
(Credit: Apple)

Windows and Android users —who’ve long been able to sideload third-party apps— will probably roll their eyes at the argument. Ironically, Apple’s own macOS allows users to sideload apps too. But the 16-page document from the company glosses over this very fact.

Instead, Apple merely says the iPhone’s user base is so large “allowing sideloading would spur a flood of new investment into attacks on iPhone, well beyond the scale of attacks on other platforms like Mac.”

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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