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Public advisory of scammers impersonating CSA and the SPF

Members of public are advised to stay vigilant and not follow any instructions given by these scammers. Read the public advisory

Cyber Security Agency of Singapore
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Information resources

Pages in Information resources

Last updated 22 January 2025

DNS-based Authentication of Named Entities (DANE)

Information resource on DANE

Domain Key Identified Message (DKIM)

Information resource on DKIM

Domain Name System Security Extensions (DNSSEC)

Information resource on DNSSEC

Domain-based Message Authentication, Reporting & Conformance (DMARC)

Information resource on DMARC

Hypertext Transfer Protocol Secure (HTTPS)

Information resource on HTTPS

Internet Protocol Version 6 (IPv6)

Information resource on IPv6

Sender Policy Framework (SPF)

Information resource on SPF

Start Transport Layer Security (STARTTLS)

Information resource on StartTLS

Transport Layer Security (TLS)

Information resource on TLS