HONG KONG: Hackers claim to have obtained a trove of data on 1 billion Chinese from a Shanghai police database in a leak that, if confirmed, could be one of the largest data breaches in history.
In a post on the online hacking forum Breach Forums last week, someone using the handle “ChinaDan” offered to sell nearly 24 terabytes (TB) of data, including what they claimed was information on 1 billion people and “several billion case records” for 10 Bitcoin, worth about $200,000.
The data purportedly include information from the Shanghai National Police database, including names, addresses, national identification numbers and mobile phone numbers, as well as case details.
A sample of data seen by The Associated Press (AP) listed names, birthdates, ages and mobile numbers. One person was listed as having been born in “2020,” with their age listed as “1,” suggesting that information on minors was included in the data obtained in the breach.
The AP could not immediately verify the authenticity of the data samples. Shanghai police did not immediately respond to a request for comment.
The data leak initially sparked discussion on Chinese social media platforms such as Weibo, but censors have since moved to block keyword searches for “Shanghai data leak.”
One person said they were skeptical until they managed to verify some of the personal data leaked online by attempting to search for people on Alipay using their personal information.
“Everyone, please be careful in case there are more phone scams in the future!” they said in a Weibo post.
Another person commented on Weibo that the leak meant everyone was “running naked” — slang used to refer to a lack of privacy — and it was “horrifying.”
Experts said the breach, if confirmed, would be the biggest in history.
Kendra Schaefer, a partner for technology at policy research firm Trivium China, said in a tweet that it’s “hard to parse truth from the rumor mill, but can confirm file exists.”
Such data leaks are fairly common, according to Michael Gazeley, managing director at Hong Kong-based security company Network Box.
“There are approximately 12 billion compromised accounts posted on the Dark Web right now. That’s more than the total number of people in the world,” he said, adding that a majority of data leaks often come from the United States.
Chester Wisniewski, principal research scientist at cybersecurity firm Sophos, said the breach was “potentially incredibly embarrassing to the Chinese government,” and the political harm would probably outweigh the damage to the people whose data was leaked.
Most of the data is similar to what advertising companies that run banner advertisements would have, he added.
“When you’re talking about a billion people’s information and its static information, it’s not about where they traveled, who they communicated with, or what they were doing, then it becomes very much less interesting,” Wisniewski said.
Still, once hackers get data and put it online it’s impossible to fully remove it.
“The information, once it’s unleashed, is forever out there,” Wisniewski said. “So if someone believes their information was part of this attack, they have to assume it’s forever available to anyone and they should be taking precautions to protect themselves.”
A major cryptocurrency exchange said it had stepped up verification procedures to guard against fraud attempts, such as using personal information from the reported hack to take over people’s accounts.
Zhao Changpeng, chief executive officer of cryptocurrency exchange Binance, said in a tweet on Monday its threat intelligence had detected the sale of “1 billion resident records.”
“This has an impact on hacker detection/prevention measures, mobile numbers used for account takeovers, etc.” Zhao wrote in his tweets, before saying Binance had already stepped up verification measures.
In 2020, a major cyberattack believed to be by Russian hackers compromised several US federal agencies, including the State Department and the Department of Homeland Security; telecommunications firms; and defense contractors.
Last year, over 533 million Facebook users had their data published in a hacking forum after hackers scraped their data due to a vulnerability that has since been patched.
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