Two New Free Tools: SPF & DMARC Generator and Password Breach Checker
Generate correct SPF and DMARC DNS records in seconds, and check whether any password has appeared in a data breach — without ever sending the password to a server.
Erich Kolb
Insights
Practical IT insights for your organization
Strategy, security, and operational guidance for enterprise and professional services teams.
Free IT Diagnostic Tools: DNS, SSL, Email Security, and HTTP Headers
Free DNS checker, SSL certificate inspector, email security validator (SPF, DMARC, DKIM), and HTTP headers analyzer. No account, no install, instant results from your browser.
Erich Kolb
What the New Email Authentication Requirements Mean for Your Domain
Google and Yahoo now require DMARC, SPF, and DKIM for all senders. If your domain is not configured correctly, your email lands in spam or gets rejected outright.
Erich Kolb
How to Spot LinkedIn Recruitment Scams Before They Become a Security Incident
LinkedIn recruitment scams often look like legitimate job opportunities, making them one of the most effective social engineering attacks. Learn the warning signs, common scam patterns, and practical steps employees can take to stay protected.
Erich Kolb
MFA Is Not Enough: Protecting Against Session Token Hijacking
Multi-factor authentication is a critical security control, but attackers can bypass it by stealing active session tokens. Learn how layered defenses help prevent account takeovers and strengthen identity security.
Erich Kolb
How to Stop Burning Tokens in Claude Code: Practical Ways to Reduce Costs and Extend Your Usage
A practical guide to Claude Code token optimization, including context management, cost reduction strategies, and proven techniques to conserve API credits.
Erich Kolb