Actionable guides on exposed API keys in public JavaScript, API documentation leaks, SSL certificate issues, DNS security (SPF/DKIM/DMARC), and security headers. Practical fixes for developers and small teams.
A practical checklist to harden prompts, validate tool calls, and reduce data exfiltration risk in production AI workflows.
Security review checklist for AI agents: identity boundaries, tool permissions, retrieval policies, and rollback safety.
How to isolate retrieval, sanitize injected instructions, and prevent cross-tenant leakage in RAG systems.
What can be public vs private in AI apps, plus key rotation, revocation, and leak-response steps.
Launch-week controls for HTTPS, DNS auth, secret scanning, prompt injection defenses, and incident monitoring.
Environment variables prefixed with NEXT_PUBLIC_ are bundled into your client-side JavaScript. If you're storing API keys there, they're visible to everyone.
Source maps reverse your minified JavaScript back to readable code. If you ship them to production, you're giving attackers a detailed map of your application.
Stop getting F grades on security header scans. Here are ready-to-use security header configurations for Vercel and Netlify that you can copy directly into your project.
Compare the best free website security scanners: DomainOptic, SecurityHeaders.com, Mozilla Observatory, Qualys SSL Labs. Find the right tool for SSL, DNS, headers, and exposed secrets.
Security checklist for vibe coders using AI to write code. Prevent API key leaks, SQL injection, and XSS in Claude, Cursor, and Copilot-generated code.
Learn how to run a website security audit step by step. Check SSL certificates, DNS health, security headers, and exposed secrets. No security experience required.
Learn how attackers scan public JavaScript bundles for exposed API keys, AWS credentials, and secrets. Check your public code with DomainOptic's Secret Scanner.
Discover how exposed /swagger, /graphql, /.env and debug endpoints can leak your API surface. Practical steps to reduce exposure.
Enable low-frequency SSL/DNS/headers/reputation alerts for one domain without creating an account. Stay ahead of expirations and misconfigurations in under a minute.
Learn about HTTP security headers, why they matter, and how to implement them to protect your website from common attacks.
Comprehensive guide to SSL/TLS certificates: types, validation levels, security best practices, and how to check certificate health.
Learn how to secure your DNS configuration to prevent hijacking, spoofing, and other DNS-based attacks on your domain.
Learn the fastest ways to check if your desired domain name is available, including free tools, WHOIS lookups, and what to do if it's taken.
Compare the top domain name generators including AI-powered tools. Find the best free domain generator for your business or startup.
Learn what WHOIS is, how to perform a WHOIS lookup, and what information you can find about any domain name.
Should you buy a premium domain? Learn what makes domains premium, typical costs, and whether the investment makes sense for your business.
Confused about domain names, URLs, and websites? Learn the clear differences between these commonly confused terms.
Expert tips for choosing the perfect business domain name. Learn what makes a great domain and avoid common mistakes.
Detailed comparison of .com, .io, and .ai domain extensions. Learn which TLD is best for your startup or tech business.
Learn what happens when a domain expires, the grace period process, and how to get an expired domain before others do.
Should you use a free subdomain or buy your own domain? Compare the pros and cons of free vs paid domain names.
Step-by-step guide to transferring your domain name to a new registrar. Learn the process, timeline, and how to avoid issues.
With millions of .com domains registered, finding available names is challenging. Learn proven strategies to discover brandable .com domains for your startup.
How artificial intelligence is transforming domain name discovery, valuation, and management. Explore AI-powered generators and the rise of .ai TLDs.
HTTPS isn't optional anymore. Learn why SSL certificates are essential for SEO rankings, user trust, and data security.
What is Domain Authority (DA) and why does it matter for SEO? Learn how DA is calculated and strategies to improve it.
.COM, .ORG, .AI, or something else? Learn how to choose the right Top-Level Domain for your website.
What makes a domain name stick in people's minds? Learn the psychology of memorable names and practical brainstorming techniques.
Should you pay for WHOIS privacy? Learn what information is exposed in public WHOIS records and how privacy protection works.
DomainOptic Blog helps indie hackers ship fast and stay secure. Learn prompt injection defense, AI agent security audits, RAG exfiltration prevention, website security audits, exposed API key detection, SSL hardening, DNS authentication, and security headers.
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