Technical library

Domain monitoring and security resources

Practical guides for diagnosis, understanding limitations, and deciding where continuous monitoring adds value.

SSL expiration alerts

How to get SSL certificate expiration alerts

Inventory SSL/TLS certificates, choose renewal windows, and configure alerts before expiration disrupts a service.

DMARC RUA reports

Interpret aggregate DMARC RUA data, SPF/DKIM alignment, and disposition before moving from p=none to enforcement.

DNS change monitoring

Build a DNS baseline, compare normalized snapshots, and prioritize changes to A, AAAA, CNAME, MX, NS, TXT, and security records.

SPF DKIM DMARC checker

Check SPF, DKIM, and DMARC syntax and alignment, understand common errors, and learn why a single pass does not guarantee protection.

lookalike domain detection

Identify typos, homographs, and domains combining a brand with trust words, then prioritize technical signs of abuse.

typosquatting detection

Learn common typosquatting techniques, how to identify plausible variations, and which evidence to review before responding.

forgotten subdomain discovery

Combine DNS, Certificate Transparency, and internal inventory to find forgotten subdomains, validate ownership, and prioritize exposure.

external attack surface management

Learn how EASM discovers, validates, and monitors internet-exposed assets and how it differs from a point-in-time scan.

API availability monitoring

Design safe API monitors with useful assertions, timeouts, retries, regional confirmation, and alerts that do not expose secrets.

SSL monitoring vs manual checks

Compare browsers, OpenSSL, and point-in-time checkers with continuous certificate monitoring, change history, and expiry alerts.