Security Guides
Email and domain security terms explained for software teams
Plain definitions of SPF, DKIM, DMARC, MTA-STS, CAA, registry lock, dangling DNS and more, with links to the guides that go deeper on each term.
Oct 19, 20265 min read
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Supply Chain Security, in plain English.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
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Why do edge runtimes block eval, and which dependencies break?
CloudFront Functions and Vercel's Edge runtime both disable dynamic code evaluation. Learn what that blocks, which libraries break, and how to check yours.
Oct 19, 20264 min read
Security Guides
How do host patterns work when blocking extensions on a site?
Edge's runtime_blocked_hosts uses scheme, subdomain, hostname and eTLD patterns. Worked examples show what matches, what does not and how to scope it.
Oct 19, 20263 min read
Security Guides
What should an edge function dependency review check?
A practical checklist for reviewing edge function dependencies on Lambda@Edge, Workers and Vercel: inventory, size, runtime fit, secrets, owners.
Oct 19, 20264 min read
Security Guides
Dynamic secrets or rotated passwords for a payments database?
Dynamic secrets issue short-lived database credentials per session. Rotated passwords change a long-lived one on a schedule. Here is how to choose.
Oct 19, 20264 min read
Security Guides
Are .NET user secrets safe to use in production?
No. Secret Manager stores values unencrypted in your user profile and is for development only. Use a managed store such as Azure Key Vault in production.
Oct 19, 20264 min read
Security Guides
DORA's pervasive security capability: the measures it suggests
DORA's pervasive security page suggests specific ways to measure security inside delivery. What each measure means and how to collect it from your tools.
Oct 19, 20264 min read
Security Guides
Donated software for a nonprofit: what should you check first?
Free or donated software still carries security duties. Use this checklist of questions on data, access, updates and exit before you accept an offer.
Oct 19, 20263 min read
Security Guides
How should you handle a domain transfer auth code safely?
A domain transfer auth code is a password for moving your domain. How to generate, share, expire and verify one, and what the standard says about it.
Oct 19, 20264 min read
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