Network:
- access control mechanisms and access control lists
- authentication mechanisms
- Domain name
- IDS
- internal domain names
- IP addresses of the reachable systems
- network blocks
- networking protocols
- private websites
- rogue websites
- system enumeration
- TCP and UDP services running
- telephone numbers
- VPN devices
Systems:
- passwords
- remote system type
- routing tables
- SNMP information
- system architecture
- system banners
- system names
- user and group names
Organization:
- address and phone numbers
- background of the organization
- comments in HTML source code
- company directory
- employee details
- location details
- new articles
- organizations website
- press releases
- security policies implemented
- Web server links relevant to the organization