Public network application security options:

• SSL (prevent passwords collection from public wifi)
• White list (prevent application inspection from known hostile networks)
• "Session Security Level" to 4 (prevent session hijacking)
• "Minimum password length" to 8 (make password guessing harder)
• Auto blacklisting block IPs that use the wrong password to often (defaults to 20 per minute)
• 2 factor authentication
• Authentication keys for RSS, and Calendar subscriptions.
• Injection detection
• Analytics
• Active Directory Authentication