Domain registration
ICANN's Security and Stability Advisory Committee guide addresses protecting registration accounts and maintaining appropriate contact and renewal practices. It is background guidance; current registrar features and agreements should be checked for the actual account. Open ICANN SAC 044.
Choose the official source for the question
The reference page connects operating topics to the authority behind the guidance.
Email response
Microsoft documents symptoms of compromise and actions for protecting and investigating Microsoft 365 mail-enabled accounts. Use the current instructions for the environment and the permissions of the responding administrator. Open Microsoft compromised account guidance.
Social media
The UK NCSC guide covers authorized publishing, security features, content approval, and recovery arrangements. The operational principles are useful; UK reporting procedures are not presented as US legal requirements. Open NCSC social media guidance.
Vendor incident
The FTC guide addresses response coordination, evidence, remediation, and communication after a data breach. Requirements for a particular incident depend on its facts and applicable law and agreements. Open FTC breach response guidance.
User credentials
The RDA guides explain how external requirements connect to the service workflow. Shared mailboxes, access removal, MFA, HIPAA, CJIS, and Massachusetts data security each include the relevant official source.