About Websense, Inc. Websense, Inc. (NASDAQ: WBSN) is a global leader in protecting organizations from the latest cyber attacks and data theft. Websense TRITON comprehensive security solutions unify web security, email security, mobile security and data loss prevention (DLP) at the lowest total cost of ownership. Tens of thousands of enterprises rely on Websense TRITON security intelligence to stop advanced persistent threats, targeted attacks and evolving malware. Websense prevents data breaches, intellectual property theft and enforces security compliance and best practices. A global network of channel partners distributes scalable, unified appliance- and cloud-based Websense TRITON solutions. Websense TRITON stops more threats; visit www.websense.com/proveit to see proof. To access the latest Websense security insights and connect through social media, please visit social.websense.com. For more information, visit www.websense.com and www.websense.com/triton.About Vista Equity Partners Vista Equity Partners, a U.S. based private equity firm with offices in San Francisco, Chicago and Austin, currently invests over $7 billion in capital committed to dynamic, successful technology-based organizations led by world-class management teams with long-term perspective. Vista is a value-added investor, contributing professional expertise and multi-level support towards companies realizing their full potential. Vista's investment approach is anchored by a sizable long-term capital base, experience in structuring technology-oriented transactions, and proven management techniques that yield flexibility and opportunity in private equity investing. For further information please visit www.vistaequitypartners.com. Important Additional Information This press release is neither an offer to purchase nor a solicitation of an offer to sell shares of Websense. The offer to buy securities of Websense described in this press release will be made only pursuant to the offer to purchase and related materials that Vista has filed on Schedule TO with the SEC. In addition, Websense has filed its recommendation of the tender offer on Schedule 14D-9 with the SEC. In connection with the proposed transaction, Websense has also filed a preliminary proxy statement with the SEC. Additionally, Websense and Vista will file other relevant materials in connection with the proposed acquisition of Websense by Vista pursuant to the terms of the merger agreement. INVESTORS AND STOCKHOLDERS OF WEBSENSE ARE ADVISED TO READ THE SCHEDULE TO, THE SCHEDULE 14D-9, AND THE PROXY STATEMENT, AS EACH MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME, AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC WHEN THEY BECOME AVAILABLE BEFORE THEY MAKE ANY DECISION WITH RESPECT TO THE TENDER OFFER OR MERGER, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND THE PARTIES THERETO.