Newbies should start here
some general SAP tips
SAP toolbox
Security for SAP R/3 Servers and Networks / SAP-Sicherheit (german)
IT-Grundschutz Module for SAP Security (german BSI)
Hacking SAP R/3
Using SAP ITS or WAS without multi level security? be warned!
Hacking a SAP Database (german)
SAP Securitymanagement with mySAP.com
SAP Security Audit Checklist ( local copy)
SAP Security [...]
