Island.io builds the Enterprise Browser, and raised $400M at a $6.4 billion valuation in September, backed by Sequoia Capital and J.P. Morgan Growth Equity Partners.

Arkis holds master accounts at the exchanges its borrowers trade on, and the people who configure those accounts hold credentials that move capital. Island.io now governs that access. Every Arkis session authenticates through it, the credentials stay with the browser rather than the operator, and each operator's provisioning names the venues they may reach. That policy is enforced on each endpoint, so an operator cannot open a resource their role does not cover. Secure Browser monitors what operators do, raises security alerts in real time, and prevents sensitive data from leaving a session.

"We separate our security work into two problems," said Aleksandr Kopnin, CTO of Arkis. "Governing the capital itself is an architecture question, and we solve it in the architecture. Operational security around the people who touch the system is a different problem, and it needs the right partner. Island Browser gives us a single entrance into the ecosystem, where we set the policy once and it holds for everyone who reaches a venue."

"Much of modern financial infrastructure runs in the browser now, and trading venue accounts are among the highest-consequence applications any enterprise touches," said James Savory, Regional Vice President at Island.io. "Access like that should come with identity, provisioning and data controls, and the Enterprise Browser was built to carry them."

Island joins Spearbit and Copper among the partners Arkis relies on, covering smart contract verification, off-exchange settlement, and now operator access. For more on what Island.io does for Arkis, and how this access is provisioned in practice, read How Arkis Governs Operator Access from CTO Aleksandr Kopnin.

About Arkis

Arkis is an institutional prime broker that margins CeFi, DeFi and TradFi positions as one portfolio, giving funds unified credit, collateral and risk management across the venues they trade. Backed by Spark, Arkis has deployed over $250M in institutional credit with zero bad debt since 2022.

Prospective clients can reach the Arkis team at operations@arkis.xyz.

About Island.io

Island is the agentic control plane for enterprises, where organizations govern people and AI agents as they work across devices, browsers, applications, networks, and data. Island gives agents the identity management, access, guardrails, cost controls, and auditability they need to operate safely at scale. Millions of users trust Island to protect sensitive information, simplify enterprise work, and reduce reliance on legacy infrastructure.