Potential iPhone Vulnerability: DarkSword Threat Looms
Apple has a lot on its plate. In just over a week, a new security threat may affect millions of iPhones worldwide.
This latest danger, referred to as DarkSword, exploits several zero-day vulnerabilities that can fully compromise devices, according to reports from Google Threat Intelligence Group. So, how can you tell if your iPhone is in jeopardy?
Cyber threats seem to be more frequent within Apple’s once impenetrable ecosystem, which is quite a shift from the past. There was a time when iOS was considered “unhackable.”
Currently, around 244 million iPhones might be at risk from targeted hacking attacks through DarkSword.
What makes this exploit particularly alarming is the fact that the vulnerability’s code has been leaked on GitHub, a massive platform for developers. While publicly available code does help Apple recognize and fix software issues quicker, it also provides hackers—both domestic and international—with the tools to exploit vulnerable iPhones.
Essentially, hackers now have an easy way to launch large-scale attacks against iPhone users.
The Mechanics of DarkSword
DarkSword operates similarly to the Coruna exploit previously discussed. It can chain together multiple zero-day vulnerabilities to compromise a target device. Research indicates that DarkSword has already been affecting mobile phones in regions like Saudi Arabia, Turkey, Malaysia, and Ukraine since November 2025.
With the code now accessible on GitHub, this exploit can also be executed on devices globally, including those in the United States.
Is Your iPhone at Risk?
The silver lining is that DarkSword can only compromise specific iOS versions: those running iOS 18.4 to 18.7. If your phone already has iOS 26 installed or an earlier version than iOS 18, you’re in the clear regarding this threat.
However, about 16.09% of active iPhones are still operating on iOS 18, meaning that roughly 244 million devices are at risk of targeted attacks via DarkSword.
Protecting Your Device from DarkSword
There are two main methods to shield your phone from DarkSword exploits:
- Update your phone to iOS 26 right away to minimize the threat from DarkSword.
- If you’re still on iOS 18, Apple released an update on April 1, which effectively addresses the vulnerability. Make sure to download and install iOS 18.7.7 as soon as possible.
While DarkSword is mostly a threat to iPhones, iPads running iPadOS 18 are also at risk. The same precautions apply to them.
Because of the widespread nature of this threat, it’s advisable to share this information with family and friends. Let them know their iPhones or iPads could be at risk if they don’t update.
Adding Extra Security to Your iPhone
DarkSword is just one of many emerging threats targeting iPhones, along with others like Coruna and CVE-2026-20700. As someone who’s followed Apple closely since the beginning of the iPhone, I’ve noticed that the security landscape for iOS has weakened significantly. New vulnerabilities crop up almost monthly. We’ll continue to watch this space, especially as summer approaches and Apple reveals its next iOS generation. In the meantime, it’s critical to keep your device up-to-date with the latest software.
Alongside major operating system updates, Apple has started rolling out smaller updates aimed at improving background security and addressing potential threats more swiftly. To activate these enhancements, go to the Settings app, tap on Privacy & Security, scroll to Background Security Improvements at the bottom, and enable the Automatic Install toggle.
Just a heads-up: these background security improvements are available only on devices running iOS 26.1 or newer. If you’re still on iOS 18 or earlier, this additional layer of security won’t be accessible to you.
