This guide outlines the security best practices employed by CellTrust, a company founded by cybersecurity pioneers. It details the company's expertise in information security strategy for enterprises and government, highlighting its partnerships with Microsoft and the integration of its SL2 Enterprise Capture platform within the Azure Cloud. The document describes the multilayered security provided by Microsoft, which is utilized by a significant portion of Fortune 500 companies. It explains the engineering of SL2 integrations with third-party applications, emphasizing adherence to original vendor specifications and the importance of encryption in communications. The guide also presents CellTrust's alignment with leading cybersecurity frameworks, including the NIST Cybersecurity Framework 2.0 and NIST SP 800-53, which guide the development of secure information systems. Additionally, it covers the company's proactive approach to privacy and security, data minimization practices, compliance with SEC and DOJ standards, and the procedures for incident response and breach notification.