Considering your company's substantial reliance on cloud and SaaS service providers like salesforce.com, Office365, and Google, what are the potential security concerns you may encounter?

SAML (Security Assertion Markup Language) is an Extensible Markup Language (XML) framework for creating and exchanging security information between partners online. The integrity of users is the weakness in the SAML identity chain. To mitigate this risk, SAML systems need to use timed sessions, HTTPS, and SSL/TLS. LDAP (Lightweight Directory Access Protocol) is a protocol that enables a user to locate individuals and other resources such as files and devices in a network. Terminal Access Controller Access Control System Plus (TACACS+) is a protocol that is used to control access into networks. TACACS+ provides authentication and authorization in addition to an accounting of access requests against a central database. Transitive trust is a two-way relationship that is automatically created between a parent and a child domain in a Microsoft Active Directory (AD) forest. It shares resources with its parent domain by default and enables an authenticated user to access resources in both the child and parent domains.