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Most Influential 2021: Arianna Simpson
The a16z general partner is investing in the future of the internet, Web 3.
Arianna Simpson’s trip to Zimbabwe in 2013 changed her life. But it was the experience of using Western Union, and the platform’s extortionary fees, to send money to the family she sponsored that changed her mind on crypto. Now a general partner at Andreessen Horowitz (a16z), she helps to manage the massively influential venture capital firm’s $2.2 billion crypto fund. Simpson previously spent time at Facebook and BitGo. She’s also run her own investment funds, Autonomous Partners, which focused on digital assets, and Crystal Towers Capital, which worked with early-stage startups.
The Complete List: CoinDesk’s Most Influential 2021
CoinDesk
CoinDesk is the world leader in news, prices and information on bitcoin and other digital currencies.
We cover news and analysis on the trends, price movements, technologies, companies and people in the bitcoin and digital currency world.
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Multisig Failures Dominate as $2B Is Lost in Web3 Hacks in the First Half
A wave of multisig-related hacks and operational misconfiguration led to catastrophic losses in the first half of 2025.
What to know:
- Over $2 billion was lost to Web3 hacks in the first half of the year, with the first quarter alone surpassing 2024’s total.
- Multisig wallet mismanagement and UI tampering caused the majority of major exploits.
- Hacken urges real-time monitoring and automated controls to prevent operational failures.
