AIM-listed security solutions provider Corero Network Security announced it has secured its first largest Line of Defence solution contract for £0.5m. The order will provide protection for an unnamed Wall Street financial service firm and compromises several of the group's DDoS system and SecureWatch services. The firm's solution is expected to provide protection for the customer's internet connected infrastructure and high profile financial services websites.Chief Executive Officer Ashley Stephenson said: "We are delighted to have secured this significant customer contract which clearly demonstrates the strength of the Corero offering in the financial services industry, an important market opportunity for Corero. "We worked in conjunction with a key US reseller partner on securing this deal and we look forward to continued growth in this commercial relationship in the future."As of 11:20 the share price had risen 10% to 24p.WS