Proofpoint has agreed to purchase cybersecurity software developer FireLayers in a $55m deal, a year after it closed an Akamai-backed funding round.

Cybersecrity company Proofpoint has agreed to acquire US-based cloud security platform FireLayers for $55m, offering an exit to content delivery network operator Akamai Technologies.

Proofpoint will pay approximately $46m in cash for FireLayers, with the remainder provided in stock, subject to continued vesting. The transaction is expected to close by the end of 2016.

FireLayers has created a software platform that monitors usage of, and actions taken in cloud applications to assess risk and detect threats. The technology will be…