CoinDesk’s New Owner Bullish Replaces CEO in Restructuring
Sara Stratoberdha replaces Kevin Worth, who has led CoinDesk since 2017.

CoinDesk’s longtime CEO Kevin Worth is out amid a major restructuring initiated by the media, events and information company’s new owner, Bullish Group, which operates the Bullish crypto exchange.
In Worth's place, the parent company has appointed Sara Stratoberdha, who previously ran business development for Bullish.
"CoinDesk will remain an independent subsidiary of Bullish and Sara is committed to maintaining CoinDesk's journalistic independence and integrity," a CoinDesk spokesperson said.
The shakeup, which comes two months after Bullish Group acquired CoinDesk from its embattled former owner Digital Currency Group, affects much of CoinDesk’s leadership.
Other departures include Chief Operating Officer and President of Media Elinor Hirschhorn, Vice President of Engineering John DeGuenther and Executive Director of Global Strategy Emily Parker.
Chief Content Officer Michael Casey no longer has a full-time role, but is in discussions with Bullish to stay on board with CoinDesk in some other capacity.
CoinDesk and Bullish employees were informed of the changes via a memo on Thursday from Bullish CEO Tom Farley, who said the restructuring was designed to shift CoinDesk’s media, indices and events businesses into a flatter organizational structure. Some CoinDesk functions, such as Human Resources, will now report to their equivalents at Bullish. CoinDesk’s tech and product teams will also be integrated with Bullish, said Farley.
"Kevin and the leadership team oversaw the evolution of CoinDesk into a leading global media company, effected the sale to Bullish, and successfully integrated the two companies. We thank them and wish them well,” Farley said in a statement shared with CoinDesk.
“Sara and the CoinDesk leadership team are thrilled about the opportunity to invest in and grow CoinDesk’s media, events, and indices.”
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Specialized AI detects 92% of real-world DeFi exploits

New research claims specialized AI dramatically outperforms general-purpose models at detecting exploited DeFi vulnerabilities.
Ano ang dapat malaman:
- A purpose-built AI security agent detected vulnerabilities in 92% of 90 exploited DeFi contracts ($96.8 million in exploit value), compared with 34% and $7.5 million for a baseline GPT-5.1-based coding agent running on the same underlying model.
- The gap came from domain-specific security methodology layered on top of the model, not differences in core AI capability, according to the report.
- The findings come as prior research from Anthropic and OpenAI shows AI agents can execute end-to-end smart contract exploits at low cost, accelerating concerns that offensive AI capabilities are scaling faster than defensive adoption.











