Zack Whittaker

Zack Whittaker

Security Editor

Zack Whittaker is the security editor at TechCrunch. You can send tips securely via Signal and WhatsApp to +1 646-755-8849. He can also be reached by e-mail at zack.whittaker@techcrunch.com.

The Latest from Zack Whittaker

Mintlify says customer GitHub tokens exposed in data breach

Documentation startup Mintlify says dozens of customers had GitHub tokens exposed in a data breach at the start of the month and publicly disclosed last week. Mintlify helps developers create document

Tech giant Fujitsu says it was hacked, warns of data breach

Multinational technology giant Fujitsu confirmed a cyberattack in a statement Friday, and warned that hackers may have stolen personal data and customer information. “We confirmed the presence o

How to verify a data breach

Over the years, TechCrunch has extensively covered data breaches. In fact, some of our most-read stories have come from reporting on huge data breaches, such as revealing shoddy security practices at

A bug in an Irish government website that exposed COVID-19 vaccination records took 2 years to publicly disclose

Two years ago, the Irish government fixed a vulnerability in its national COVID-19 vaccination portal that exposed the vaccination records of around a million residents. But details of the vulnerabili

Four things we learned when US intelligence chiefs testified to Congress

Cyberattacks, regional conflict, weapons of mass destruction, terrorism, commercial spyware, AI, misinformation, disinformation, deepfakes and TikTok. These are just some of the top perceived threats

As the Change Healthcare outage drags on, fears grow that patient data could spill online

A cyberattack at U.S. health tech giant Change Healthcare has ground much of the U.S. healthcare system to a halt for the second week in a row. Hospitals have been unable to check insurance benefits o

Elon Musk switched on X calling by default: Here’s how to switch it off

In his quest to turn a simple and functioning Twitter app into X, the everything app that doesn’t do anything very well, Elon Musk launched audio and video calling on X last week — and this new fe

A leaky database spilled 2FA codes for the world’s tech giants

A technology company that routes millions of SMS text messages across the world has secured an exposed database that was spilling one-time security codes that may have granted users’ access to t

UnitedHealth confirms ransomware gang behind Change Healthcare hack amid ongoing pharmacy outages

American health insurance giant UnitedHealth Group has confirmed a ransomware attack on its health tech subsidiary Change Healthcare, which continues to disrupt hospitals and pharmacies across the Uni

Anycubic users say their 3D printers were hacked to warn of a security flaw

Anycubic customers are reporting that their 3D printers have been hacked and now display a message warning of an alleged security flaw in the company’s systems. Numerous threads on news sharing

Ransomware attack blamed for Change Healthcare outage stalling US prescriptions

An ongoing cyberattack at U.S. health tech giant Change Healthcare that sparked outages and disruption to hospitals and pharmacies across the U.S. for the past week was caused by ransomware, TechCrunc

LoanDepot says about 17M customers had personal data and Social Security numbers stolen during cyberattack

Almost 17 million LoanDepot customers had sensitive personal information, including Social Security numbers, stolen in a January ransomware attack, the company has confirmed. The loan and mortgage gia

UnitedHealth says Change Healthcare hacked by nation-state, as US pharmacy outages drag on

U.S. health insurance giant UnitedHealth Group (UHG) said Thursday in a filing with government regulators that its subsidiary Change Healthcare was compromised, likely by government-backed hackers. In

FTC bans antivirus giant Avast from selling its users’ browsing data to advertisers

The Federal Trade Commission (FTC) on Thursday said it will ban the antivirus giant Avast from selling consumers’ web browsing data to advertisers after Avast claimed its products would prevent

US health tech giant Change Healthcare hit by cyberattack

U.S. healthcare technology giant Change Healthcare has confirmed a cyberattack on its systems. In a brief statement Wednesday, the company said it was “experiencing a network interruption relate

Six things we learned from the LockBit takedown

A sweeping law enforcement operation led by the U.K.’s National Crime Agency (NCA) this week took down LockBit, the notorious Russia-linked ransomware gang that for years has wreaked havoc on busine

US sanctions LockBit members after ransomware takedown

The U.S. government has sanctioned two key members of LockBit, the Russian-speaking hacking and extortion gang accused of launching ransomware attacks against victims across the U.S. and international

US military notifies 20,000 of data breach after cloud email leak

The U.S. Department of Defense is notifying tens of thousands of individuals that their personal information was exposed in an email data spill last year. According to the breach notification letter s

Hackers uncover new TheTruthSpy stalkerware victims: Is your Android device compromised?

A consumer-grade spyware operation called TheTruthSpy poses an ongoing security and privacy risk to thousands of people whose Android devices are unknowingly compromised with its mobile surveillance a

‘World’s biggest casino’ app exposed customers’ personal data

The startup that develops the phone app for casino resort giant WinStar has secured an exposed database that was spilling customers’ private information to the open web. Oklahoma-based WinStar b
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