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Sigma Chain acquires Cyworld for revival efforts

PRIVATEAug 12, 2026about 3 hours ago

Acquiring Company

Sigma Chain

Acquired Company

Cyworld

South KoreaSouth KoreaInformation TechnologySoftwareBlockchainCryptocurrencySocial MediaSocial Media Management

Description

Sigma Chain has successfully acquired the intellectual property of Cyworld, aiming to relaunch the platform as Cyworld 3.0. The beta service is set to begin in October 2026, with a full rollout planned for the first half of 2027. Despite legal uncertainties surrounding the acquisition, Sigma Chain is focused on integrating blockchain technology to enhance user experience and monetization. This acquisition marks a new chapter for Cyworld, which has changed ownership multiple times in its history.

Company Information

Company

Sigma Chain

Location

South Korea

About

Sigma Chain is a blockchain technology company that specializes in data processing, software, and identity authentication technologies. The company holds several patents related to its services and aims to reshape digital interactions. Sigma Chain focuses on innovation in the blockchain sector, aiming to create new revenue models and digital asset opportunities. Its acquisition of Cyworld marks a significant step in its business expansion efforts.

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M&A Insights

Based on deal data
Integration timeline
70% of M&A integrations take 12-24 months to complete
Tech stack consolidation
83% of merged companies consolidate technology vendors within first year
Post-acquisition investment
Companies increase IT spending by 23% on average after acquisitions
Success factor
M&A deals with strong technology integration plans are 2.5x more likely to succeed

Frequently asked

Who acquired Cyworld?

Cyworld was acquired by Sigma Chain, based in South Korea. The deal was reported on August 12, 2026. Sigma Chain is a blockchain technology company that specializes in data processing, software, and identity authentication technologies. Sigma Chain is privately held and operates in Information Technology.

When did Sigma Chain acquire Cyworld?

Sigma Chain's acquisition of Cyworld was reported on August 12, 2026. Sigma Chain has successfully acquired the intellectual property of Cyworld, aiming to relaunch the platform as Cyworld 3.0. The beta service is set to begin in October 2026, with a full rollout planned for the first half of 2027. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.

What does Cyworld do?

Cyworld is an iconic social networking service that gained popularity in the 2000s and 2010s. Originally created by KAIST graduate students, it offered features like Minihompy and Dotori, which drove substantial revenue. It is privately held, operating in Social Media, and is based in South Korea.

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