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

US offers $10M to help catch Change Healthcare hackers

The government's reward for information now extends to ALPHV's affiliates, which claimed responsibility for a massive weekslong healthcare cyberattack.

UK blames China for massive breach of voter data

It's the first time the United Kingdom has attributed the massive breach of millions of citizens' voter data since the cyberattack was first disclosed in 2023.

AT&T won’t say how its customers’ data spilled online

Customers say their leaked AT&T customer data — names, addresses, phone numbers and Social Security numbers — is accurate.

DOT to investigate data security and privacy practices of top US airlines

The U.S. Department of Transportation announced its first industry-wide review of data security and privacy policies across the largest U.S. airlines. The DOT said in a press release Thursday that the

Users say Glassdoor added real names to user profiles without their consent

One user said Glassdoor pulled her full name from an email and added it to her profile. Another user said it wasn't clear how Glassdoor got his data.

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
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