Biden, Obama, tech moguls' Twitter accounts hacked in apparent bitcoin scam - Action News
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Biden, Obama, tech moguls' Twitter accounts hacked in apparent bitcoin scam

A series of high-profile Twitter accounts were hijacked on Wednesday, and the social media company took the extraordinary step of temporarily preventing at least some verified accounts from publishing messages altogether.

Twitter takes extraordinary step of temporarily preventing some verified accounts from posting

An apparent Twitter hack has affected the accounts of major public figures including Joe Biden, Barack Obama, Elon Musk, Bill Gates and Jeff Bezos. (Matt Rourke/The Associated Press)

A series of high-profile Twitter accounts were hijacked on Wednesday, with some of the platform's top voices including U.S. presidential candidate Joe Biden, reality television show star Kim Kardashian, former U.S. president Barack Obama, billionaire Elon Musk, and rapper Kanye West, among many others used to solicit digital currency.

Nearly two hours after the first wave of hacks, the cause of the breach had not yet been made public. In a sign of the seriousness of the problem, Twitter took the extraordinary step of preventing at least some verified accounts from publishing messages altogether.

It was not clear whether all verified users were affected but, if they were, it would have had a huge impact on the platform and its users. Verified users include celebrities, journalistsand news agencies, governments, politicians, heads of stateand emergency services.

Twitter didn't offer clarification but said in a statement that users "may be unable to tweet or reset your password while we review and address this incident."

Just after 8:40 p.m. ET, Twitter said that "most accounts" should be able to tweet again but functionality "may come and go."

The unusual scope of the problem suggested that it was not limited to a single account or service. While account compromises are not unusual, experts were surprised at the sheer scale and co-ordination of Wednesday's incident.

"This appears to be the worst hack of a major social media platform yet," said Dmitri Alperovitch, who co-founded cybersecurity company CrowdStrike.

Some experts said it seemed probable that hackers had access to Twitter's internal infrastructure.

"It is highly likely that the attackers were able to hack into the back end or service layer of the Twitter application," said Michael Borohovski, director of software engineering at security company Synopsys.

"If the hackers do have access to the back end of Twitter, or direct database access, there is nothing potentially stopping them from pilfering data in addition to using this tweet-scam as a distraction," he said.

No explanation

Earlier, Twitter told Reuters that it was investigating what it later called a "security incident" and would be issuing a statement shortly. However, two hours later, the company had still not issued an explanation of what exactly took place.

Twitter CEO Jack Dorsey saidthe company is diagnosing the problem and will share findings "when we have a more complete understanding of exactly what happened."

Shares in the company tumbled almost five per cent in trading after the market close before paring their losses.

Reaction online to the wave of hacks, as well as Twitter's warning that some users may be unable temporarily to tweet, was swift.

Earlier, some of the platform's biggest users appeared to be struggling to re-establish control of their Twitter accounts. In the case of billionaire Tesla chief executive Elon Musk, for example, one tweet soliciting cryptocurrency was removed and, sometime later, another one appeared, and then a third.

Among the others affected: Amazon founder Jeff Bezos, investor Warren Buffett, Microsoft co-founder Bill Gates, and the corporate accounts for Uber and Apple. Several accounts of cryptocurrency-focused organizations were also hijacked.

Altogether, the affected accounts had tens of millions of users.

Biden's campaign was "in touch" with Twitter, according to a person familiar with the matter. The person said the company had locked down the Democrat's account "immediately following the breach and removed the related tweet." Tesla and other affected companies were not immediately available for comment.

Twitter locked down Biden's account 'immediately following the breach and removed the related tweet,' said a person familiar with the matter. (Matt Rourke/The Associated Press)

Publicly available blockchain records show that the apparent scammers have already received more than $100,000 worth of cryptocurrency.

Several experts said the incident has raised questions about Twitter's cybersecurity.

"It's clear the company is not doing enough to protect itself," said Oren Falkowitz, former CEO of Area 1 Security.

Alperovitch, who now chairs the Silverado Policy Accelerator, said that, in a way, the public had dodged a bullet so far.

"We are lucky that given the power of sending out tweets from the accounts of many famous people, the only thing that the hackers have done is scammed about $110,000 in bitcoins from about 300 people," he said.

With files from CBC News