Our learning platforms include the following security mechanisms to protect clients, users and their resources: passwords, walled communities, authenticated resource access, secure profiles, secure messaging, communications monitoring, secure e-commerce, secure storage, secure servers. All communications are over HTTPS, all personal passwords are encrypted with individual SALT values, we use a rate limiter to prevent script kiddies or malicious attackers from overwhelming the system, our Amazon servers are hosted in their own VPC (virtual private cloud), and all remote ssh logins are protected using public/private keys. We conduct regular security audits and run daily security tools on our site to automatically detect and report security issues. You can easily prevent selected users from logging in, revoke their access rights, or delete them entirely if necessary. You can configure your site security policies to specify which operations can be performed by specific account types.