ISTQB RSS
CT-SEC (Security Tester, 2016) is the ISTQB security testing certification focused on risk, strategy and protection mechanisms. We explain its syllabus, the exam and how it differs from the newer CT-STE so you can choose well.
CT-STE is the ISTQB certification for people who carry out security testing: techniques, process, standards (OWASP, CWE, CVSS), SAST/DAST tools and reporting. Here is the v1.0.1 syllabus explained chapter by chapter, plus the exam and how to prepare.