Kids at risk: The disclosure of the scope of the breach of the digital toymaker has been described as disturbing.
A cyberattack on digital toymaker VTech Holdings Ltd exposed the data of 6.4 million children, the company said, in what experts called the largest known hack targeting youngsters.
The Hong Kong-based firm said the attack on databases for its Learning Lodge app store and Kid Connect messaging system affected even more kids than the 4.9 million adults that the company disclosed.
Security experts said they expected the size of the breach would prompt governments to scrutinise VTech and other toymakers to review their security.
"The disclosure of the scope of the breach is disturbing," said Jaclyn Falkowski, a spokeswoman for Connecticut's attorney general.
Connecticut and Illinois said on Monday they plan to investigate the breach. Regulators in Hong Kong are also looking into the matter.
"This breach is a parent's nightmare of epic proportions," said Seth Chromick, a threat analyst with network security firm vArmour. "A different approach to security for all organisations is needed."
Chris Wysopal, co-founder of cybersecurity firm Veracode, said it could be a wake up call for families in the same way that the hack on infidelity website Ashley Madison earlier this year made adults realise online data might not be safe.
VTech said in a statement that children's profiles included name, gender and birth date. Stolen adult data included name, mailing address, email address, password retrieval questions, IP address and passwords.
The most VTech customers affected were in the United States, followed by France, the United Kingdom, Germany, Canada, Spain, Belgium and the Netherlands.
Shai Samet, a security expert who audits toymakers for compliance with the US government's Children's Online Privacy Protection Act, said he believed the case would lead many toy companies to "rethink" security protections on children's data.
Technology news site Motherboard, which broke news of the breach last week, reported that the person who claimed responsibility for the hack said "nothing" would be done with the stolen information.
Security experts were sceptical, noting that the stolen data could be worth millions of dollars.
"I wouldn't trust him," said Troy Hunt, a security expert who reviewed samples of stolen data and information about the attack for Motherboard.
Justin Harvey, chief security officer with Fidelis Cybersecurity, said stolen records sell for US$1 (RM4.20) to US$4 (RM16.90) in underground markets. — Reuters
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