Foxconn, one of the world’s largest manufacturers of electronics sold by major tech vendors, is recovering from a cyberattack that disrupted some of the company’s factories in North America.

Nitrogen, a ransomware group that’s known for targeting organizations in the manufacturing, construction and technology sectors, claimed responsibility for the attack on its data leak site and said it stole 8 terabytes of data spanning more than 11 million files. 

The threat group posted screenshots of some of the allegedly stolen data and claimed it compromised “confidential instructions, projects and drawings from Intel, Apple, Google, Dell, Nvidia and many other projects.” 

Foxconn is famously known as the primary assembler of Apple iPhones. Apple and the other companies allegedly impacted by the attack did not respond to a request for comment.

A spokesperson for Foxconn confirmed some of its factories in North America suffered a cyberattack, and said its cybersecurity team immediately responded to the breach by implementing additional “measures to ensure the continuity of production and delivery.”

The spokesperson did not answer questions about when the attack occurred or what systems or data was impacted, but noted that “affected factories are currently resuming normal production” as of Tuesday. 

Nitrogen was first observed in 2023, using ALPHV, one of the most prevalent ransomware variants at that time, Cynthia Kaiser, senior vice president at Halcyon’s Ransomware Research Center, told CyberScoop. The group started using stolen code from Conti, another formerly prolific ransomware variant, in 2024 to build its own custom attack tools to hit Windows and VMware server environments, she added.

The threat group has most recently focused on companies in the manufacturing and technology sectors. “However, the most recent cases of claims by Nitrogen do not include a working file listing on the leak site and include mostly older images of files,” Kaiser said. “This raises questions about whether Nitrogen is inflating data-theft claims in an attempt to pressure victims into paying higher ransoms.”

Foxconn hasn’t described the nature of the attack or confirmed the existence of a ransom demand. 

Ismael Valenzuela, vice president of threat research and intelligence at Arctic Wolf Labs, said Nitrogen follows a “consistent playbook, stealing data before encrypting systems so they have leverage on multiple fronts, combining operational disruption with the threat of sensitive information being exposed.”

The threat group’s tactics indicate it’s not opportunistic, but rather “operating with a defined model, focusing on organizations that are easier to access but still critical enough to drive pressure and payment,” Valenzuela added. 

Foxconn, also known as Hon Hai Precision Industry with headquarters in Taiwan, is among the world’s largest companies with $259 billion in revenue last year, the company said. Foxconn’s North American footprint includes multiple factories in Mexico, Wisconsin, Ohio, Texas, Virginia and Indiana.

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Leaked iOS spyware has some cybersecurity professionals raising urgent alarms about potential mass iPhone compromises, a development that pairs ominously with the recent discovery of two sophisticated iOS exploit kits.

At the same time, some other experts say Apple’s defensive features for iPhones remain elite. But several factors have created unprecedented circumstances: the public accessibility of a version of DarkSword, shortly after the discovery of the original version of DarkSword and the earlier discovery of a similar kit known as  Coruna, and a  growing market for iPhone exploits driven by their high value as targets.

Allan Liska, field chief information security officer at Recorded Future, said he was worried about what the leaked DarkSword version could do to “democratize” iPhone exploits.

“Right now, iPhone exploitations are among the most expensive to research/implement so they have been, largely, the realm of nation-states,” he said. “If anyone can exploit an iPhone, suddenly something that has managed to be relatively secure now is a much bigger attack surface.”

Google, iVerify and Lookout released research last week on DarkSword’s discovery, centered on Ukraine. Google also said it saw targeting in Saudi Arabia, Turkey and Malaysia. And that was before a version turned up on GitHub, a development TechCrunch first reported and Google and iVerify have analyzed. (The week before, iVerify and Google uncovered Coruna. Google declined to comment further for this story.)

“It’s extremely alarming that this leaked out on GitHub,” said Rocky Cole, co-founder of iVerify. “I would assume that it’s being used all around the world, and including here in the United States.”

Hundreds of millions of iPhones running iOS 18 could be vulnerable to DarkSword.

“I think that the top line issues here are pretty clear: people who have devices that are vulnerable should upgrade ASAP,” said Eva Galperin, director of cybersecurity at the Electronic Frontier Foundation. “It is very likely that these vulnerabilities are being used right now to exploit vulnerable devices at scale, which is unusual for Apple products.”

The propagation problem

Coruna was concerning enough for Apple that it took the rare step of backporting security updates to still older versions of iOS, Cole said. The fear, he said, was that it might be wormable — capable of spreading from one device via text message to everyone in a phone’s contact list.

But Cole said Apple hasn’t released similar security-focused updates to iOS 18, for reasons he doesn’t know.

Apple has emphasized the patches it has issued, urged users to update their phones and touted Lockdown Mode as a defense against spyware.

“Apple devices are designed with multiple layers of security in order to protect against a wide range of potential threats, and every day Apple’s security teams around the world work tirelessly to protect users’ devices and data,” said Apple spokesperson Sarah O’Rourke. “Keeping your software up to date is the single most important thing you can do to maintain the security of your Apple products, and devices with updated software were not at risk from these reported attacks.”

IPhones’ widespread use makes them high-value targets, fueling a thriving market for exploits. Coruna and DarkSword are indicators of this growing demand. 

“It’s time for organizations to start thinking of mobile security the way they think about desktop security, which is to say everyone knows how to secure their laptop,” Cole said. And for iPhone exploit hunting in particular, “you’re starting to see people do it at a mass level.” Furthermore, the resale market is such that exploits that once were exclusive are no longer, and AI makes it even easier to customize them in the code, he said. 

DarkSword has drawn federal attention: The Cybersecurity and Infrastructure Security Agency this week added vulnerabilities that DarkSword exploits to the list that federal agencies must patch.

The number of people still using iOS 18 is large, up to 25% of all iPhones. Cole said several factors are contributing to that, such as users being leery of iOS 26’s onboard artificial intelligence or the Liquid Glass interface.

Said Galperin: “There are many reasons why people do not keep their devices up to date, so when I tell people ‘just patch your stuff’ I think it is important to realize that there are circumstances under which this is easier said than done.”

Proven defenses despite expanding risks

Despite the concerns, Cole credited iPhone for its high security standards, in particular for its app store.

For Natalia Krapiva, senior tech-legal counsel at Access Now, a key takeaway is the worrisome proliferation of commercial spyware and cyber intrusion capabilities.

“This is exactly what human rights activists and digital security researchers have been warning governments and companies about: In the absence of effective regulation for the industry, these exploits will get out and end up in the hands of adversaries like Russia, China, Iran, or, as in the case of DarkSword, leaked online for any criminal to use,” she said.

On the other hand, Apple’s Lockdown Mode and Memory Integrity Enforcement are top-notch defensive measures, Krapiva said. We’ve yet to see a Lockdown Mode-enabled iPhone being infected with spyware, she said.

“I think we’ll keep seeing more attempts to exploit both Apple and Android devices as they improve their software and hardware security,” she said. “It’s the old cat-and-mouse game.”

Adam Boynton, senior enterprise strategy manager at Jamf, said what’s happened with Coruna and DarkSword is evidence of Apple’s success.

“What’s encouraging here is that Apple’s security model works,” he said. “Coruna skips devices running the latest iOS versions and avoids those with Lockdown Mode enabled entirely. That’s a strong validation of the defences Apple has built.

“DarkSword reinforces the same principle,” he continued. “Where Coruna targeted older iOS versions, DarkSword demonstrates that even relatively current releases can be targeted by determined actors. Apple moved quickly to patch the vulnerabilities involved, and devices running the latest iOS are protected.”

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