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AskCyber Home » News » News » Twitter Says Phone Spear Phishing Used in Security Incident

Twitter Says Phone Spear Phishing Used in Security Incident

2020-07-31 by Max

Twitter Phone Spear Phishing

Phone spear phishing attack used to launch cryptocurrency scam on hijacked high-profile accounts

Twitter posted an update today about the security incident that took place on July 15. In that incident, 45 Twitter accounts of high-profile individuals including Tesla CEO Elon Musk, Microsoft CEO Bill Gates, and Amazon CEO Jeff Bezos, were compromised. In addition, corporate accounts belonging to tech giants like Apple and Uber were also compromised. Once attackers gained access, they used the accounts to tweet a cryptocurrency investment scam. Although the forensic investigation is still ongoing, the company shared that the cyberattack began with a phone spear phishing attack on employees.

According to the incident update, the cyberattack began with a spear phishing phone attack that targeted a small, but undisclosed, number of Twitter employees. The attack was focused on employees the threat actors believed had access to Twitter’s internal networks. Not all employees targeted had the necessary permissions to carry out the account hijacking and cryptocurrency scam.

However, the threat actors used the compromised employee accounts to move through the network to gain knowledge about Twitter’s internal systems and processes. They were also able to determine which employees did have the access they needed.

Twitter said, “A successful attack required the attackers to obtain access to both our internal network as well as  specific employee credentials that granted them access to our internal support tools.”

Twitter employs people from around the world to work on account support. The threat actors were able to obtain employee credentials from those who could give them the needed access to carry out the cyber attack.

Account Logins Compromised

The attackers then attempted to compromised 130 Twitter accounts. For 45 of those accounts, the attackers initiated a password reset, logged in to the accounts, and sent Tweets from them. The Tweets contained messaging about a cryptocurrency scheme that promised large returns. They also accessed the direct messages of 36 accounts. For seven of the compromised accounts, the attackers downloaded the account’s data from the Your Twitter Data feature.

“This attack relied on a significant and concerted attempt to mislead certain employees and exploit human vulnerabilities to gain access to our internal systems,” says the update from Twitter.

What is phone spear phishing?

Phone spear phishing is a type of cyber attack where the criminal calls the target on the phone, rather then sending a spear phishing email. The attacker intends to steal something during the call. Often a threat actor wants a password reset so they can then compromise an account. They may also try to get the names and contact information of other people to contact. The attacker already knows information about the target, like job function, phone number, name, etc.… They may use other information that have collected about the target to make the telephone calls seem legitimate.

According to the post Twitter continues to work with the forensic cyber security investigators as well as law enforcement.

Filed Under: News Tagged With: Twitter

About Max

Max is a Data Privacy Coordinator at a major global law firm and a science fiction author residing in the Philadelphia area. He has been writing for https://www.askcybersecurity.com since early 2017.


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