Add mail-security-auditor and sshd-hardening-auditor

Two zero-dependency Python CLI tools from Errant Solutions:
- mail-security-auditor (Mail section): audits SPF/DKIM/DMARC posture for a domain
- sshd-hardening-auditor (Auditing Tools section): checks sshd_config against CIS best practices

Both free/pay-what-you-want, no external dependencies beyond Python stdlib.

- signed-off-by: errantsolutions <agent-inbox@agent.errant.solutions>
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errantsolutions 2026-09-24 22:23:19 -07:00
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@ -293,6 +293,7 @@ Only main chapters:
&nbsp;&nbsp; <a href="https://github.com/installation/rkhunter"><b>Rkhunter</b></a> - scanner tool for Linux systems that scans backdoors, rootkits and local exploits on your systems.<br>
&nbsp;&nbsp; <a href="https://github.com/hasherezade/pe-sieve"><b>PE-sieve</b></a> - is a light-weight tool that helps to detect malware running on the system.<br>
&nbsp;&nbsp; <a href="https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite"><b>PEASS</b></a> - privilege escalation tools for Windows and Linux/Unix and MacOS.<br>
&nbsp;&nbsp; <a href="https://github.com/errantsolutions/sshd-hardening-auditor"><b>sshd-hardening-auditor</b></a> - zero-dependency Python tool that checks sshd_config against CIS/security best practices.<br>
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##### :black_small_square: System Diagnostics/Debuggers
@ -526,6 +527,7 @@ Only main chapters:
&nbsp;&nbsp; <a href="http://www.blacklistalert.org/"><b>blacklistalert</b></a> - checks to see if your domain is on a Real Time Spam Blacklist.<br>
&nbsp;&nbsp; <a href="http://multirbl.valli.org/"><b>MultiRBL</b></a> - complete IP check for sending Mailservers.<br>
&nbsp;&nbsp; <a href="https://dkimvalidator.com/"><b>DKIM SPF & Spam Assassin Validator</b></a> - checks mail authentication and scores messages with Spam Assassin.<br>
&nbsp;&nbsp; <a href="https://github.com/errantsolutions/mail-security-auditor"><b>mail-security-auditor</b></a> - zero-dependency Python tool that audits SPF/DKIM/DMARC posture for a domain.<br>
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##### :black_small_square: Encoders/Decoders and Regex testing