In March 2026, cybersecurity researchers found yet another reason for Apple users to make sure their devices are always up to date. While browsing public information on GitHub, white hat hackers stumbled upon an iOS exploit known as DarkSword. They discovered that someone had leaked the latest version of the tool online, allowing anyone to use it to gain unauthorized access to iOS devices.
Upon discovery, multiple researchers tested it on their own devices, confirming that the full-chain exploit poses a credible threat and is widely available to anyone. What makes this exploit a serious threat is that it does not necessarily require a user mistake. An Apple user can visit an infected website or click on a malicious link to get infected. The threat remains active on unupdated iPhones, putting the devices of hundreds of millions of people at risk of cyberattacks.
Key takeaways
- Unupdated Apple devices remain vulnerable to the DarkSword iOS exploit.
- DarkSword is a serious, widespread threat that puts at risk hundreds of millions of Apple devices.
- Updating to the latest iOS protects against this specific threat and highlights the importance of keeping iOS fully updated.
- Security strongly outweighs the common downsides of updating, such as shorter battery life and decreased performance.
What is DarkSword, and why is it considered a widespread threat?
Cybersecurity researchers discovered a full-chain exploit leaked to GitHub that cybercriminals could use to gain unauthorized access to Apple devices without requiring users to click a malicious link. It self-installs and grants attackers full access.
Luckily, Apple addressed the nasty iOS exploit in the latest updates, so if a device is up to date right now, it is no longer at risk from this particular vulnerability. However, updating an iPhone or iPad to the latest iOS sometimes comes with other caveats, such as decreased battery life and overall performance.
Why does updating an iPhone to the latest version of iOS makes battery life and performance worse?
In one of the latest iOS updates (26.4), Apple, yet again, stated that new updates include features and improvements that might affect performance and battery life. Older hardware sometimes struggles with the new bells and whistles of newer operating systems. And Apple has acknowledged on multiple occasions that software updates can lead to lower performance and decreased battery life. However, updating iOS devices remains extremely important.
Why is it so vital to keep Apple devices fully updated?
One of the main reasons is that almost every time Apple releases an iOS update, it includes bug and security patches that render malicious tools such as DarkSword obsolete. Even though the device may feel slower than before, or its battery might not last as long, security is of high importance. And the device becomes more secure when Apple fully updates its software. If security is a priority, it remains vital for Apple users to ensure devices are protected and running the latest iOS. Apple strongly encourages users to visit Settings > General > Software Update immediately and install the latest iOS.
It is no secret that updates can be a pain and lead to lower performance and shorter battery life. People may consider these issues inconvenient if they cannot always upgrade to Apple’s latest devices. However, we live in an age where spy agencies and governments sometimes use cybersecurity tools that leak to the real world. This allows low-profile hackers to gain unauthorized access to smart devices and commit fraud, blackmail, or other malicious activities. Having the latest software updates on all Apple devices is as important as having high-end antivirus software that protects from various digital threats.