22 March 2021

Corero Network Security plc

("Corero" or the "Company")

Change of Adviser

Corero Network Security plc (AIM: CNS), a leading provider of real-time, high-performance, automatic Distributed Denial of Service (DDoS) cyber defense solutions, today announces that it has appointed Canaccord Genuity Limited as its nominated adviser and sole broker, with immediate effect.

Canaccord Genuity Group Inc. is a leading independent, full-service financial services firm, with operations in two principal segments of the securities industry: wealth management and capital markets.  As nominated adviser and corporate broker, Canaccord Genuity Limited will work to broaden the Company's investor base across UK and North America.

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About Corero Network Security

Corero Network Security plc is a global leader in real-time, high-performance, automatic DDoS cyber defense solutions. Both Service and Hosting providers, alongside digital enterprises across the globe rely on Corero's award winning cybersecurity technology to eliminate the threat of Distributed Denial of Service (DDoS) to their digital environment through automatic attack detection and mitigation, coupled with network visibility, analytics and reporting. Corero's industry leading SmartWall and SecureWatch technology provides scalable protection capabilities against external DDoS attackers and internal DDoS botnets in the most complex edge and subscriber environments, while enabling a more cost-effective economic model than previously available. Corero's key operational centers located in Marlborough, Massachusetts, USA and Edinburgh, UK, with the Company's headquarters in Amersham, UK. The Company is listed on the London Stock Exchange's AIM market under the ticker CNS.  For more information, visit  www.corero.com