Top 5 Security Vulnerabilities dectected from compromises

Promoting CISP (Cardholder Information Security Program), Visa has published the educational bulletin: Top Five Data Security Vulnerabilities Identified to Promote Merchant Awareness. To summarize the top 5 vulnerabilities are:

1. Storage of Track Data
2. Missing or Outdated Security Patches
3. Vendor-Supplied Default Settings and Passwords
4. SQL Injection
5. Unnecessary and Vulnerable Services on Servers