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Technical Documentation

Technical Documents

In-depth reference guides on the security headers, DNS and email records, and vulnerabilities behind every EzyAudit AI scan. Written for site owners and developers who want to understand exactly what a scan finds and how to fix it.

Guides and How-Tos

Step-by-step walkthroughs for scanning, auditing and fixing the most common website security issues - from first scan to final fix.

Security Headers

The HTTP response headers that tell browsers how to protect your visitors. Deep-dive explainers and step-by-step fixes for every header EzyAudit AI checks.

Security Headers  •  4 min read

How to Fix a Missing CSP Header

How to add a Content-Security-Policy header the right way, with copy-paste examples for Apache, Nginx and WordPress.

Security Headers  •  4 min read

How to Fix HSTS Errors

From a missing header to a browser locking users out: the common HSTS errors, and how to resolve each one.

Security Headers  •  5 min read

How to Fix Missing Security Headers (Step-by-Step Guide)

Missing security headers? Here is how to fix them in minutes - what each header does, copy-paste snippets for Apache, Nginx and…

Security Headers  •  4 min read

Website Security Headers Explained

Server instructions that tell the browser how to behave more safely - what each key security header does and why it matters.

Security Headers  •  4 min read

What Does X-Frame-Options Do?

X-Frame-Options controls whether other sites can embed your pages in a frame, stopping clickjacking attacks.

Security Headers  •  4 min read

What is Content Security Policy?

A Content-Security-Policy tells the browser which scripts, styles and resources it may load - the strongest defence against cross-site scripting.

Security Headers  •  4 min read

What is HSTS?

HSTS forces browsers to connect only over HTTPS, closing the gap that SSL-stripping attacks exploit.

Security Headers  •  4 min read

What is Permissions-Policy?

Permissions-Policy controls which browser features - camera, microphone, location - your pages and embedded content are allowed to use.

Security Headers  •  4 min read

What is Referrer-Policy?

Referrer-Policy controls how much of your URLs the browser reveals to other sites, preventing sensitive addresses from leaking.

DNS and Email Security

SPF, DKIM, DMARC and the wider DNS records that stop attackers spoofing your domain and keep your email out of the spam folder.

DNS and Email Security  •  4 min read

How to Fix an SPF Record

Duplicate records, the ten-lookup limit, syntax slips: the most common SPF record problems, and exactly how to fix each one.

DNS and Email Security  •  4 min read

How to Fix DMARC p=none

A DMARC p=none policy reports spoofed email but blocks none of it. How to move safely to quarantine, then reject.

DNS and Email Security  •  4 min read

How to Fix SPF and DMARC Records (Stop Email Spoofing)

Missing or weak SPF and DMARC lets anyone spoof your domain. Here is how to fix SPF, DKIM and DMARC step by…

DNS and Email Security  •  12 min read

How to Set Up DMARC, SPF, and DKIM to Protect Your WordPress Email

Set up SPF, DKIM and DMARC for WordPress with clear steps to stop spoofing and improve your email deliverability.

DNS and Email Security  •  4 min read

SPF vs DKIM vs DMARC

Not competing options but three layers that work together - what each does, how they differ, and why you need all three.

DNS and Email Security  •  4 min read

What is DKIM?

DKIM adds a cryptographic signature to your email that proves it is genuine and has not been altered in transit.

DNS and Email Security  •  4 min read

What is DMARC?

DMARC stops criminals sending email that appears to come from your domain, working alongside SPF and DKIM.

DNS and Email Security  •  4 min read

What is DNSSEC?

DNSSEC adds cryptographic signatures to DNS so forged answers are rejected, stopping hijacking and cache poisoning.

DNS and Email Security  •  4 min read

What is MTA-STS?

MTA-STS forces inbound email to your domain over encrypted, authenticated connections, closing the silent TLS-downgrade gap.

DNS and Email Security  •  4 min read

What is SPF?

SPF is a DNS record listing which servers may send email for your domain - and the common pitfalls to avoid.

DNS and Email Security  •  4 min read

What is TLS-RPT?

TLS-RPT asks sending servers to report how securely they delivered your email, exposing hidden encryption failures.

Vulnerability Guides

Plain-English guides to the vulnerabilities and industry standards behind every finding in your EzyAudit AI security report.

Vulnerability Guides  •  5 min read

How to Fix Vulnerable and Outdated WordPress Plugins

Vulnerable or outdated WordPress plugins are the number one cause of hacked sites. Here is exactly how to find and fix them,…

Vulnerability Guides  •  11 min read

PHP2Shell (CVE-2026-109618 and CVE-2026-109619): Is Your Website Vulnerable? How to Check and Fix It

PHP2Shell lets attackers run code on any unpatched PHP server with one request. Here is how to check your website in a…

Vulnerability Guides  •  4 min read

What is a CISA KEV Vulnerability?

A vulnerability attackers are actively exploiting in the wild - what the CISA KEV catalogue is and why it matters.

Vulnerability Guides  •  4 min read

What is a CVE?

A unique public identifier for a known security vulnerability, giving everyone a common language for tracking flaws.

Vulnerability Guides  •  4 min read

What is an Exposed .env File?

An exposed .env file lets anyone download your database passwords, API keys and secrets - and why it is so dangerous.

Vulnerability Guides  •  4 min read

What is CSRF?

CSRF tricks a logged-in user into making unwanted authenticated requests - and how tokens and SameSite cookies stop it.

Vulnerability Guides  •  4 min read

What is CVSS?

CVSS scores how severe a vulnerability is, from zero to ten, so you know what to fix first.

Vulnerability Guides  •  4 min read

What is Directory Traversal?

Directory traversal lets attackers reach files outside the web root, such as config files that hold passwords.

Vulnerability Guides  •  4 min read

What is SQL Injection?

SQL injection lets attackers manipulate the database queries behind your site to steal or destroy data.

Vulnerability Guides  •  4 min read

What is XML-RPC?

A legacy WordPress interface often abused for brute-force amplification and pingback DDoS - and how to disable it safely.

Vulnerability Guides  •  4 min read

What is XSS?

Cross-site scripting lets attackers run malicious JavaScript in the browsers of your visitors - the main types and how to prevent it.

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