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News

Blockchain Capital Co-Founder Sues Hacker Over $6.3 Million Digital Asset Theft

August 21, 2023 - Around 2 mins mins to read

Key Points:

  • Blockchain Capital’s Bart Stephens sues a hacker for stealing Bitcoin and Ethereum from his wallet.
  • The hacker used the SIM swap technique to bypass security and systematically steal digital assets.
  • The rising trend of SIM swap attacks prompts concern over safeguarding digital wealth.
In a recent development reported by Forbes, Bart Stephens, co-founder and managing partner of cryptocurrency fund Blockchain Capital, has initiated legal action against an anonymous hacker who managed to steal $6.3 million in various cryptocurrencies, including Bitcoin and Ethereum, from his digital wallet.
Blockchain Capital Co-Founder Sues Hacker Over $6.3 Million Digital Asset Theft

The lawsuit was filed in the U.S. District Court for the Northern District of California in August.

The accused hacker, referred to as “Jane Doe,” allegedly exploited information found online and on the dark web to bypass security measures implemented by Stephens’ cellular network provider. The attack occurred in May, when the hacker gained control of Stephens’ cellular network account and subsequently changed account passwords.

Employing a technique known as a SIM swap attack, the hacker ordered a new phone and transferred Stephens’ private cell phone number to the new device’s SIM card.

This granted the hacker access to reset passwords and circumvent two-factor authentication on undisclosed digital wallets, ultimately leading to the “systematic theft of Plaintiff’s digital assets.”

The FBI issued a warning in 2022 regarding the increasing prevalence of SIM swap attacks, particularly targeting individuals holding substantial amounts of cryptocurrency. The Bureau estimated that these attacks resulted in the theft of $72 million in 2022, up from $68 million in the previous year.

Bart Stephens, who co-founded Blockchain Capital with his brother Brad Stephens in 2013, has been a prominent figure in the cryptocurrency landscape.

The San Francisco-based fund has backed a range of crypto startups, including Worldcoin, Coinbase, Kraken, and Opensea. The incident involving Stephens’ cryptocurrency theft sheds light on the vulnerability of digital assets and the need for heightened security measures within the crypto space.

DISCLAIMER: The information on this website is provided as general market commentary and does not constitute investment advice. We encourage you to do your own research before investing.

Bart Stephens

Blockchain Capital

Coinbase

Jane Doe

Kraken

OpenSea

SIM swap attack

Worldcoin

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Author

Harold

With a passion for untangling the complexities of the financial world, I've spent over four years in financial journalism, covering everything from traditional equities to the cutting edge of venture capital. "The financial markets are a fascinating puzzle," I often say, "and I love helping people make sense of them." That's what drives me to bring clear and insightful financial journalism to the readers of Coincu.
News

Blockchain Capital Co-Founder Sues Hacker Over $6.3 Million Digital Asset Theft

Key Points:

  • Blockchain Capital’s Bart Stephens sues a hacker for stealing Bitcoin and Ethereum from his wallet.
  • The hacker used the SIM swap technique to bypass security and systematically steal digital assets.
  • The rising trend of SIM swap attacks prompts concern over safeguarding digital wealth.
In a recent development reported by Forbes, Bart Stephens, co-founder and managing partner of cryptocurrency fund Blockchain Capital, has initiated legal action against an anonymous hacker who managed to steal $6.3 million in various cryptocurrencies, including Bitcoin and Ethereum, from his digital wallet.
Blockchain Capital Co-Founder Sues Hacker Over $6.3 Million Digital Asset Theft

The lawsuit was filed in the U.S. District Court for the Northern District of California in August.

The accused hacker, referred to as “Jane Doe,” allegedly exploited information found online and on the dark web to bypass security measures implemented by Stephens’ cellular network provider. The attack occurred in May, when the hacker gained control of Stephens’ cellular network account and subsequently changed account passwords.

Employing a technique known as a SIM swap attack, the hacker ordered a new phone and transferred Stephens’ private cell phone number to the new device’s SIM card.

This granted the hacker access to reset passwords and circumvent two-factor authentication on undisclosed digital wallets, ultimately leading to the “systematic theft of Plaintiff’s digital assets.”

The FBI issued a warning in 2022 regarding the increasing prevalence of SIM swap attacks, particularly targeting individuals holding substantial amounts of cryptocurrency. The Bureau estimated that these attacks resulted in the theft of $72 million in 2022, up from $68 million in the previous year.

Bart Stephens, who co-founded Blockchain Capital with his brother Brad Stephens in 2013, has been a prominent figure in the cryptocurrency landscape.

The San Francisco-based fund has backed a range of crypto startups, including Worldcoin, Coinbase, Kraken, and Opensea. The incident involving Stephens’ cryptocurrency theft sheds light on the vulnerability of digital assets and the need for heightened security measures within the crypto space.

DISCLAIMER: The information on this website is provided as general market commentary and does not constitute investment advice. We encourage you to do your own research before investing.

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