The story
Accellion (1999–2021)
The company was founded as Accellion in Singapore in 1999 and was originally focused on distributed file storage. It moved to Palo Alto, California and shifted its focus on secure file transmission.
Accellion reached a total funding of about $35 million in 2011, and it was valued at $500 million in 2014. The company's chief executive officer, Yorgen Edholm, credited aversion to "National Security Agency—style snooping" as a factor in their success.
Accellion raised $12.2 million, in January 2012, from Riverwood Capital, to continue their expansion.
The company began focusing on security and compliance in 2016, and released features that included data security, governance, and compliance. They also began integrations with major cybersecurity independent software vendors (ISVs).
In April 2020, the company received $120 million investment from Bregal Sagemount. Later that year, a zero-day exploit in Accellion’s legacy File Transfer Appliance (FTA) product led to data breaches of dozens of government and private organizations. The vulnerabilities were confirmed only in the FTA and not in the Kiteworks platform, which has a separate codebase. Accellion later announced it would stop supporting its legacy FTA product starting April 30, 2021.
Kiteworks
Accellion was rebranded as Kiteworks in October 2021.
Kiteworks completed a SOC 2 Type II audit examination and received ISO/IEC 27001:2013, 27017:2015, and 27018:2019 certifications for its platform in October 2023. Unlike a Type I assessment, which reviews control design at a specific point in time, the SOC 2 Type II audit process involves an independent CPA firm evaluating the operational effectiveness of controls over a period of 3 to 12 months, typically including scoping, fieldwork, and evidence collection phases.
The company became an early signee of Cybersecurity and Infrastructure Security Agency's (CISA) Secure by Design Pledge in May 2024.
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In August 2024, Kiteworks raised US$456 million from Insight Partners and Sixth Street, valuing it at over US$1 billion.
As of 2024, Kiteworks has over 100 million users, across over 3,800 organizations.
In March 2025, Kiteworks received Federal Information Processing Standard (FIPS) 140-3 validation for its cryptographic module, building upon its previous FIPS 140-2 certification. Additionally, its Secure Gov Cloud obtained FedRAMP High Ready status.
Following the company's 2025 acquisition of Zivver [nl], the Dutch investigative journalism outlet Follow the Money raised concerns that sensitive government and corporate data could be exposed under U.S. jurisdiction. Experts noted that several members of Kiteworks’ leadership are former personnel of Israel’s Unit 8200, an elite military intelligence unit, which could present potential security vulnerabilities.
From Wikipedia’s article on Kiteworks, shared under CC BY-SA 4.0.4