Peter Williams researched secure communications at University College London, before transferring to NASA Ames Research Center working for Sterling Federal Systems. The NASA initiative transferred cryptographic key management know-how to various civilian Federal government agencies. As Chief Architect in a dotcom startup known as Digital Certificates International – better known as VeriSign Inc – Peter Williams worked on standards and co-authored the book “Digital Certificates.” At another venture-backed firm called ValiCert, his work emphasized the need to enable consumers to independently validate certificates. Peter Williams worked on the secure microelectronics firmware of the Rapattoni “Lockbox” – enabling Realtors® to show homes for sale – before joining Rapattoni Corporation as CIO/CISO. As a 40-year old “SAAS” vendor working in the US Multiple Listing Service outsourcing marketplace, Rapattoni offers web single sign-on for both business to business and consumer to business federations serving about million Realtors® and their 100 million or so clients.