Posting of Circular

7 August 2015

Corero Network Security plc

("Corero" or the "Company")

Posting of Circular

Corero Network Security plc (AIM: CNS), the AIM listed network security company, is pleased to announce that, further to its announcement of 30 July 2015, a circular (the "Circular") setting out full details of the Subscription and convening a General Meeting, has today been posted to Shareholders.

The General Meeting will be held at the offices of finnCap at 60 New Broad Street, London, on 27 August 2015 at 9.30 a.m.

Capitalised terms used but not defined in this announcement shall have the meaning given to them in the Circular.

Enquiries:

About Corero Network Security

Corero Network Security, an organization's First Line of Defense® against Distributed Denial of Service (DDoS) attacks and cyber threats, provide enterprises and service providers with an additional layer of security capable of inspecting and analysing Internet traffic and mitigating attacks. Corero products and services enhance existing security architecture with a scalable, flexible and responsive defence against DDoS attacks and cyber threats before they reach the targeted IT infrastructure, allowing online services to perform as intended. The latest addition to Corero First Line of Defense® product family includes the Corero SmartWall® Threat Defense System (TDS) allowing for modular, highly scalable network visibility and DDoS defence for the Large Enterprise, Datacentre and Hosting Provider, as well as the Internet Service Provider.

For more information about how Corero solutions are protecting over 500 businesses across the globe, visit www.corero.com.