TLDFYI

DNSSEC

Cryptographic extensions that authenticate DNS responses to prevent tampering.

Cryptographic certificate enabling encrypted HTTPS connections for a domain.

Unauthorized takeover of a domain through social engineering or security exploits.

All measures protecting domain names from unauthorized access or modification.

TLD-level requirement for HTTPS, enforced via browser HSTS preload lists.

Attack that corrupts DNS cache data to redirect users to malicious sites.

Registering misspelled variants of popular domains to capture mistyped traffic.

Registering domains in bad faith that infringe on existing trademarks.

DNS TXT record specifying authorized email-sending servers for a domain.

Email authentication protocol that uses SPF and DKIM to prevent email spoofing.

Email authentication adding digital signatures verified via DNS public keys.

Malicious use of domains for phishing, malware, spam, or fraud.

Attack creating malicious subdomains under a legitimate domain after compromising its registrar account.

Attack that tricks browsers into accessing internal network resources by rapidly changing a domain's DNS resolution.

Open standard requiring all TLS certificates to be recorded in public, auditable logs for transparency and abuse detection.

Submission of a domain to browser preload lists ensuring HTTPS-only access from the very first connection.

Protocol using DNSSEC-signed TLSA records to bind TLS certificates to domains, bypassing traditional CA trust.

DNS firewall mechanism allowing resolvers to block or redirect queries for domains on threat intelligence lists.

Technique hiding traffic's true destination by using a trusted domain's CDN infrastructure to route encrypted requests.

Email standard enabling verified brand logos in inboxes, requiring DMARC enforcement and a Verified Mark Certificate.

Standard requiring mail servers to use valid TLS when delivering email to a domain, preventing TLS downgrade attacks.

Score assigned to a domain based on abuse history, email behavior, and content signals used by filters and security systems.