Ukraine's ATB confirms cyberattack as hackers demand $400,000 and threaten data leak

Ukraine's largest grocery chain ATB confirmed a cyberattack after hackers posted a $400,000 extortion demand on its website. The DataSuckers group claims to have stolen data on 7.9 million customers, including names, phone numbers, addresses and password hashes; ATB denies customer data was compromised.

• DataSuckers demands $400,000 and threatens to publish stolen data
• Hackers claim data on 7.9 million customers and 11 million orders
• ATB denies customer data compromise and took some online services offline
• ATB operates over 1,300 stores and employs more than 60,000 people