Skip to main content

Uncontrollable iPhone calls to 911 last fall could have been a huge cyberattack

iphone se
Digital Trends
Repeated calls to the 911 emergency number may be cause for an emergency in and of itself. Last October, an iOS exploit resulted in a number of iPhones dialing 911 over and over again without any user input. For 12 hours on October 25 and October 26, at least 12 states including California, Florida, and Texas saw what is now said to be “the largest-ever cyberattack on the country’s emergency-response system,” according to a new report from The Wall Street Journal.

The 911 system has been in place for nearly five decades, first becoming the official emergency number of the United States in 1968. And with the age of the technology comes fears of its weaknesses, and the October cyberattack served only to underscore those concerns. “I don’t want to be alarmist, but it’s an emerging crisis,” retired Rear Adm. David Simpson told the Journal. For three years, Simpson oversaw emergency management and cybersecurity at the FCC during the Obama administration.

Recommended Videos

It now appears that the thousands of 911 calls received during that short time frame in October can be traced back to one tweeted link, which set off the iPhone exploit. That tweeted link was clicked on 117,502, and each time someone clicked, it led to a 911 call. Worse still, if users hung up their iPhones, the hack would just force another 911 call — the only way to stop it was to turn off the device completely.

“It was hard for investigators to trace the cyberattack as it cascaded across the country,” the Journal reported. “Twitter users who saw the link shared it with their followers, who shared it with their followers, turning the malware into a runaway virus.” The concern now, of course, is that another more targeted attack using the same technique could present a huge problem.

While there are 6,500 911 call centers across the country, just a small fraction of them (420 to be exact) have a cybersecurity defense that would protect against this sort of hack. Luckily, Apple is working on a fix. “The ability to dial and reach a 911 operator quickly is critical to public safety,” the company said. “The dialing feature in this instance was intentionally misused by some people with no regard for public safety. To prevent further abuse, we’re putting safeguards in place and have also worked with third-party app developers to prevent this behavior in their apps.”

Lulu Chang
Former Digital Trends Contributor
Fascinated by the effects of technology on human interaction, Lulu believes that if her parents can use your new app…
I was wrong about the iPhone 16
An iPhone 16 laying on a shelf with its screen on.

The iPhone 16 is a little over a month old, and I've been using it almost nonstop since it was announced last month. I reviewed the phone for Digital Trends and bought one with my own money as my personal phone of choice.

Not long after its unveiling, I wrote an op-ed complaining about the iPhone 16's lack of a 120Hz display. I said it was the "one thing holding back the iPhone 16" and that its 60Hz screen was "an unreasonable spec." I'd still like to see the refresh rate addressed with the iPhone 17, but after living with the iPhone 16 for over a month now, I've found that it's not nearly as big of an issue as I believed it would be.
A 60Hz screen matters, until it doesn't

Read more
This iPhone 16 Pro accessory proves less is more
WaterField Designs CitySlicker Pouch for iPhone in white leather.

Now that we’re approaching the end of the year, hot tech summer and flagship phone season are winding down, too. That means I’ve been looking for fun little accessories to help me carry around all my phones and gadgets.

One of my trusted brands for tech accessories is Waterfield Designs. I’ve been using its bags and other accessories for the past decade, and they’re some of the finest bags I own. They’re built to last, as my first messenger bag is still looking fantastic.

Read more
Android 16 might give its own spin to iPhone’s Dynamic Island alerts
The DynamicSpot Dynamic Island at the top of the Pixel 7 Pro.

Over the past few weeks, we’ve come across some interesting details about the next major build of Android. Currently in development under the apparent codename of Baklava, Android 16 will reportedly bring a cool new feature called Priority modes for notifications.

If that sounds familiar, that’s because Apple already offers a bunch of focus modes toward the same goal and bolsters the system with AI-assisted priority notifications in iOS 18. It seems Google doesn’t want to be left behind, and in doing so, could very well lift from a popular iPhone trick.

Read more