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Windows Event ID 4625: How to Investigate Failed Logons

Oct 26, 2026

What Windows Event ID 4625 means, how to read its status codes and logon types, and how to tell a mistyped password from a brute-force or password spraying attack.

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How to Check Email Headers for Phishing: SPF, DKIM and DMARC Explained

Oct 26, 2026

Learn how to check email headers for phishing. View full headers in Outlook, Gmail and Apple Mail, read the Received chain and understand SPF, DKIM and DMARC results.