Critical iPhone Security Alert: If You Haven’t Updated Since March 11, Do It Now

A powerful iPhone hacking toolkit is now publicly available to any cybercriminal with an internet connection. If your employees haven’t updated their iPhones recently, their devices may be at risk.

Here’s what’s happening and what you need to do.

What Is DarkSword?

DarkSword is a complete exploit chain and infostealer written in JavaScript. It chains multiple iOS vulnerabilities together to establish privileged code execution and access sensitive information on a compromised device. It was originally discovered by Google’s Threat Intelligence Group and security firms iVerify and Lookout.

Last week, someone leaked a newer version of DarkSword and published it on the code-sharing site GitHub. Researchers are warning this will allow any hacker to easily use the tools to target iPhone users running older versions of Apple’s operating systems.

In plain terms: what was once a sophisticated nation-state weapon is now in the hands of everyday cybercriminals.

How Does the Attack Work?

No phishing email. No suspicious app download. DarkSword is a full exploit chain built entirely in JavaScript that can silently compromise an iPhone when a user simply visits an infected website using Safari.

Exploit chains like DarkSword enable threat actors to gain full access to a user’s device with little to no action needed from the user. Once inside, the malware operates quickly — DarkSword takes a “hit-and-run” approach, collecting and exfiltrating targeted data from the device within seconds or at most minutes, followed by cleanup. That data can include passwords, contacts, messages, call history, and more.

Who Is Affected?

Both DarkSword and the related exploit kit Coruna rely on WebKit and other vulnerabilities that Apple has patched in iOS 16.7.15, iOS 15.8.7, iPadOS 16.7.15, and iPadOS 15.8.7. If you or your employees are running any version of iOS that hasn’t been updated since March 11, 2026, you may be exposed.

Users who are already on the latest version of the iPhone software do not need to take any action.

What You Need to Do Right Now

  • On your iPhone or iPad, go to Settings → General → Software Update
  • If an update is available, install it immediately
  • If you’re still on iOS 13 or 14, you must upgrade to iOS 15 and then apply the critical security update Apple will push to your device
  • Enable Lockdown Mode if you work in a high-risk industry (legal, financial, healthcare) — Lockdown Mode blocks these attacks even on older systems, though updates are still strongly recommended

Why This Matters for Your Business

Your employees’ iPhones are connected to your business email, your Microsoft 365 or Google Workspace accounts, your MFA apps, and potentially your company VPN. A compromised personal device is a door into your business.

The proliferation of these tools doesn’t mean everyone will suddenly suffer data theft — but it does mean the risk is no longer limited to high-profile targets. As one security researcher put it, this is no longer just a concern for journalists or activists. It’s a concern for any business whose employees carry a smartphone.

Nicom Can Help

Cyber threats like DarkSword are a reminder that security isn’t just about the devices your team uses — it’s about the policies, protections, and response plans behind them. If you want to make sure your business has the right security framework in place, our team is here to help.

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Is Your Business Ready for the Next Threat?

DarkSword is a reminder that cyberattacks don’t wait for a convenient time. If you want to make sure your business has the right security policies, endpoint protections, and response plan in place, let’s talk.

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