Regulatory and Non Regulatory Frameworks
NIST has a Cybersecurity Framework. https://www.nist.gov/itl/applied-cybersecurity/nice/nice-framework-resource-center
CIS Benchmarks https://www.cisecurity.org/
Standards
ISO/IEC 27002:2013
US Legislation
GLBA Gramm-Leach-Bliley ACT
Europe Legislation
GDPR