We can have multiple level security in enterprise application
1. data level security with masking (enrypting data)
2. SSL/TLS

Another thing is how we organize how to store private keys

Advanced protection of Web applicationsagainst the following threats:

• Web, HTTPS and XML attacks
• SQL Injection
• session hijacking
• cross site scripting (XSS)
• abuse of form fields
• known worms
• Zero Day worms
• buffer overflow
• cookie poisoning
• Denial of Service
• parameter tampering
• brute force login
• malicious code
• directory traversal
• attacks on Web servers and operating systems
• scanning
• command injection
• illegal coding
• identity theft
• data theft
• data disclosure
• corporate espionage
• phishing

data destruction