ISSEP is a concentration exam of CISSP. It is not that hard but intimidating because of the limited number of exam prep materials. The following official sources are crucial.
ISSEP CBK SUGGESTED REFERENCES
- IATF is obsolete.
- NIST SP 800-160 volumes 1 & 2
- INCOSE System Engineering Handbook
- NIST SP 800-37 (RMF)
- NIST SP 800-161 (Supply Chain Risk Management)
- PMI PMBOK (Free for PMI members)
- The ISSEP CBK book is outdated but good to have