By using partner and customer portals, you can collaborate with both your customers and partners. A partner portal is a great way to share and capture leads, accounts, and contacts with your third-party partner. A customer portal is another way to offer efficient and faster services to your customer from the cloud. Your customers and partners can access your information via portals in many ways. To ensure your data security, it's important to keep in mind and follow best practices for portal implementation.
The Portal Health Check Report provides a summary of the access level for data on the portals. Using Portal Health Check, you can improve portal security. To access various Portal Health Check Reports, you can navigate to Setup | Administer | Security Controls | Portal Health Check: