An important aspect of IT security is the protection of confidential data. Implementation issues are:

• authorization systems with authentication and authorization methods, such as passwords, file permissions

• encryption methods to prevent eavesdropping of passwords and to ensure integrity of files (electronic signature)

• secure (VPN) connections over the Internet, usually mail access is unencrypted - revealing passwords and messages to potential men-in-the-middle

• introduction of S/MIME for higher levels of confidentiality

•  WLAN- security for internal corporate networks