OVHcloud, the French cloud provider based in Roubaix, announced on January 26, 2026 that it had acquired Seald, a French startup that makes a software development kit (SDK) for adding end-to-end encryption to web and mobile applications.
Financial terms were not disclosed. OVHcloud shares rose more than 7% in Paris on the day, to €9.80 (about $11.60), according to French financial press. Maddyness, citing a source close to the deal, reported that the transaction was completed in record time.
Seald's technology is moving into OVHcloud's Public Cloud offering under a new name, OVHcloud End-to-End Encryption (E2EE). Seald said existing customers outside the United States would keep their service and be migrated to the new product, which runs on the same technology.
What Seald built
Seald was founded in 2016 by Timothée Rebours, Mehdi Kouhen, Maxime Huber and Dan Lousqui. It began with encryption for emails and documents and later focused on an SDK that developers can build into their own apps. The kit encrypts data on the user's device before it is sent, so that only the intended recipients can decrypt it; neither the host, the software publisher nor a system administrator can read it. OVHcloud calls this a zero-knowledge model.
The SDK handles access rights, encryption key rotation, use across several devices and secure recovery of private keys, and works with languages including JavaScript, Swift, Objective-C, Kotlin, Java, Go and C. It has held a CSPN security certification from ANSSI, France's national cybersecurity agency, since 2020. Le Monde Informatique listed Framatome, Stellantis and Wimi among Seald's customers.
Seald sold the SDK in three tiers, according to Le Monde Informatique: a free Sandbox plan for up to 500 users, a Production plan for up to 100,000 users with a 99.9% availability commitment, and an Enterprise plan for larger deployments with a dedicated instance and a 99.99% commitment. The kit is designed for collaboration, health and fintech apps on web, mobile or desktop.
Why OVHcloud is buying
OVHcloud said the deal was part of its strategy to offer a trusted cloud that combines security with regulatory compliance for the most sensitive uses. It plans to offer end-to-end encryption as a service in its public cloud alongside its existing Secret Manager, KMS and HSM products, giving customers protection from the back end of an application to the user's device.
Octave Klaba, OVHcloud's founder, who took back the chief executive role in October 2025, told Le Monde Informatique that the company was pleased to add Seald's technology to the services it offers customers. An OVHcloud spokesperson said the Seald component does not fall within the company's SecNumCloud qualification, which currently covers infrastructure and platforms.
OVHcloud operates more than 500,000 servers in 46 data centres on four continents and serves 1.6 million customers in more than 140 countries. For its 2025 financial year it reported revenue above €1 billion for the first time, up 9% on 2024, Maddyness reported.
The founders and the funding
Seald raised a first round of €800,000 (about $940,000) in 2018 from business angels, 50 Partners Capital and Bpifrance, according to Maddyness. The company went through the San Francisco accelerator The Refiners and, from mid-2017, the Paris accelerator 50 Partners.
Its shareholders before the sale included Bpifrance's Fonds Ambition Amorçage Angels (F3A), 50 Partners Capital and French angel investors such as Laurent Delaporte, Vincent Barat, Sébastien Lucas, Thierry Vandewalle, Xavier Gury and Damien Guermonprez.
What happens to customers
Seald said its existing offer would continue unchanged for current customers outside the United States and be gradually folded into OVHcloud's products. Its US operations were discontinued during the transition, and the company said it was working to make OVHcloud E2EE available in the US through appropriate channels.
An alpha version of OVHcloud End-to-End Encryption was opened to sign-ups through OVHcloud Labs, which Seald described as a rebranded version of its staging environment.
