Copperfasten was founded in January 2000 by the original design team of the highly successful Alta Vista Firewall at Digital Equipment Corporation. Following the acquisition by Compaq and subsequent sale of the Alta Vista firewall to Raptor and then Symantec, the Galway based development team decided that it would pursue its own interests and formed Copperfasten Technologies.

While designing and developing the firewall over several years and many releases, the team witnessed the scaling down of firewall technologies. While the perimeter defense is intact, and the market for firewalls has matured, the technology has failed to many critical security issues. It is in this area which Copperfasten has focused its energies, specifically, the need to secure the enterprise not just from the packets themselves but also from the content of these packets. As such, a solid security strategy combines a perimeter firewall with one or more content firewalls for each of the main data types entering and leaving the organisation.

The first product released by the company in 2001, Copperfasten Intrusion Immunity, addressed the burgeoning area of website security.

Copperfasten develops leading edge Internet Security products for international markets. The first product developed, Intrusion Immunity for Web Servers, was released 2001 and provides state of the art digital signatures, auto-remediation and several other advanced technologies for securing the corporate web presence. This was followed by the release of the sister products Immunity for Web Devices and Delegator.

In 2003, the company extended its offering to providing protection to additional critical applications. This has seen the release of the first in a series of application centric firewalls, the Mail Firewall Appliance, providing protection to corporate email services.