Atsign (@sign) is a secure-by-design connectivity and identity platform built on a zero-trust architecture. Its atPlatform gives people, devices, and applications unique end-to-end encrypted identifiers so they can connect and exchange data directly and privately, without exposing open network ports or relying on passwords.
Specifications
Zero-trust, de-perimeterized security model where no device or connection is trusted by default
End-to-end encryption of both the network connection and the data being exchanged
Unique cryptographic identifiers replace passwords and traditional authentication
Technology eliminates the need for open inbound network ports, reducing attack surface
Designed to secure IoT devices, remote access, and machine-to-machine/AI agent connections
Edge-based architecture that keeps control and encryption keys with the endpoint
Common Uses
Providing secure remote access to servers and devices without opening firewall ports
Securing IoT device fleets and machine-to-machine communications
Enabling private, encrypted connectivity for distributed teams and applications
Securing AI agent and automated system communications under a zero-trust model
How This Strengthens Your Security
SPADE recommends atSign’s zero-trust connectivity for clients running sensitive systems or remote access points, where an open network port is as real a vulnerability as an unlocked door — encrypted, identity-based connections close that gap.
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