ABOUT LEXINGTON TECHNOLOGY GROUP:Lexington Technology Group invests both expertise and capital in the development and monetization of pioneering technologies. Lexington’s goal is to catalyze technology development within its investments and to reward those who take on the risks of innovation. The enterprise invests in companies that have developed important innovations but have not been fairly rewarded by the marketplace, where shareholder value depends on the company’s ability to successfully monetize patented technologies. Its efforts contribute to an intellectual property market in which inventors are better able to profit from their inventions. More information is available at www.lex-tg.com. ABOUT DOCUMENT SECURITY SYSTEMS: Document Security Systems, Inc. (NYSE MKT: DSS) is a leader in anti-counterfeit, authentication, and mass-serialization technologies, providing security solutions to corporations, governments, and financial institutions. DSS security programs are designed to protect against product diversion, counterfeit, theft, and other costly and damaging occurrences. From risk analysis and vulnerability assessment, to systems integration and monitoring, DSS offers the advanced tools and knowledge base needed to protect the world’s most valuable and at-risk brands. More information can be found at their website, www.dsssecure.com. Important Additional Information Will Be Filed with the SEC This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities of DSS, or Lexington Technology Group or the solicitation of any vote or approval. In connection with the proposed transaction, DSS will file with the SEC a Registration Statement on Form S-4 containing a proxy statement/prospectus. The proxy statement/prospectus will contain important information about DSS, Merger Sub, Lexington Technology Group, the transaction and related matters. DSS will mail or otherwise deliver the proxy statement/prospectus to its stockholders and the stockholders of Lexington Technology Group when it becomes available. Investors and security holders of DSS and Lexington Technology Group are urged to read carefully the proxy statement/prospectus relating to the Merger (including any amendments or supplements thereto) in its entirety when it is available, because it will contain important information about the proposed transaction.