DICKER DATA LIMITED — Regulatory Filings 2013

May 6, 2013

Tuesday 7 May 2013

Manager of Company Announcements ASX Limited Exchange Centre 20 Bridge Street Sydney NSW 2000

By E-Lodgement

DICKER DATA TO DISTRIBUTE WATCHGUARD’S FULL RANGE OF SECURITY DEVICES

Dicker Data is pleased to announce the signing of internet security solution vendor WatchGuard. Effective immediately, Dicker Data will gain access to the full range of WatchGuard products including their award winning UTM devices. Dicker Data joins as WatchGuard’s third distribution partner in Australia alongside Distribution Central and WhiteGold Solutions.

Chairman and CEO, David Dicker, said “We look forward to developing our new partnership with WatchGuard. Their sole focus on security aligns with our needs and the demands of our SMB resellers. Together, there is an opportunity for us to develop strong synergies between our businesses.”

WatchGuard’s Regional Director, Australia and New Zealand, Pat Devlin, said “We are very excited about this new partnership. Dicker Data has enjoyed huge growth over the last three years and this partnership now opens up opportunities for WatchGuard to connect with new partners. In the first quarter this year, we reported our highest quarterly billings in the history of the company. Here in ANZ, we are into our eighth consecutive quarter of double-digit growth and our business shows no sign of slowing. We look forward to working closely with Dicker Data moving forward to continue this momentum. Indeed, their deep industry experience coupled with their technical excellence and service expertise will be of major benefit and provide a positive impact to our business in Australia at this time.”

About Dicker Data Limited

Dicker Data Limited was listed on the Australian Stock Exchange on January 24, 2011. Since its listing, the company has achieved record trading results. The Company is Australia’s largest and longest established Australian owned distributor of Information Technology products. Vendors include Hewlett-Packard, Lenovo, Toshiba, Samsung, ASUS and other major brands. The Company’s clients include over 3,800 value added resellers. For more information, see www.dickerdata.com.au

About WatchGuard

Since 1996, WatchGuard® Technologies, Inc. has been a global leader of business security solutions that intelligently combine industry standard hardware, Best-in-Class security features, and policy-based management tools. WatchGuard provides easy-to-use but enterprisepowerful protection to hundreds of thousands of businesses worldwide. The WatchGuard family of Smart Firewalls provides; smart security through seamless integration of multiple security services; smart management by providing a single console for deploying and maintaining services; and smart performance to ensure that customers of all sizes can securely operate at the pace of business. WatchGuard products are backed by WatchGuard LiveSecurity® Service, an innovative support program. WatchGuard is headquartered in Seattle, Wash. with offices throughout North America, Europe, Asia Pacific, and Latin America. To learn more, visit www.watchguard.com