About

Security that speaks
your language.

Most cybersecurity services are built for enterprises with IT teams and six-figure budgets. Critical End Security is built for everyone else — the small business that just wants to know if they're safe. No jargon, no contracts, no bloated retainers. Just a clear report that tells you exactly where you stand and what to do about it.

The prices are intentionally low. Most security firms charge $500–$2,000 for the same checks I'm offering for $49–$149. I'm keeping prices accessible while I build my client base — the goal is to make solid cybersecurity something a local restaurant, dentist, or law firm can actually afford, not a service reserved for companies with IT departments.

This is just the start. Critical End Security will keep expanding over the coming months — soon offering 24/7 automated monitoring and same-day alerts, with more services on the way as the business grows.

Who's Behind This

Hi, I'm Matheus Nani

I'm studying Cybersecurity in college and Critical End Security is my freelance practice. It's just me — which means when you reach out, you're talking directly to the person running the scan and writing the report. No account managers, no outsourcing, no runaround.

I started this because the problem is obvious once you see it: small businesses are attacked constantly, but the tools to understand and fix their exposure have always been priced for large companies. A $50 scan that tells you exactly where you're vulnerable is something every business should be able to afford — not just ones with a dedicated security team.

Every report I deliver is written the way I'd want to receive it — a clear score, plain-English explanations of what's wrong and why it matters, and a specific list of what to fix first. You shouldn't need to hire a consultant just to understand your own security report.

Get a Scan → LinkedIn
🔍
18 Security checks per scan
⚡
< 24 hrs From scan to PDF report in your inbox
💬
Plain English No jargon — written for business owners, not engineers
🔒
Confidential Your findings are never shared with anyone
How I Work

What you can expect from me

🎯

Clarity Over Complexity

Security reports shouldn't require a degree to understand. Every finding I deliver comes with a plain-English explanation and a specific action to take.

⚖️

Honest Assessment

I report what I find — good or bad. A HIGH risk score isn't a failure, it's a starting point. I'd rather give you an uncomfortable truth than a comfortable lie.

🔒

Confidentiality First

Every scan and report is strictly confidential. I never share client data, findings, or domain information with third parties. Your security details stay yours.

📈

Progress Over Perfection

Perfect security doesn't exist. What matters is consistent improvement. Monthly monitoring tracks your score over time so you can see real, measurable progress.

What We Check

18 security checks. One clear report.

Here's exactly what we look at on every scan and why it matters for your business.

📄 Download Sample Report
ALL PLANS

SSL / TLS Certificate

Grades your encryption A–F, checks the expiry date, and flags outdated protocols like TLS 1.0 that leave customer data exposed in transit.

ALL PLANS

Security Headers

Checks for 6 critical HTTP headers that protect your site against XSS attacks, clickjacking, and content injection from malicious scripts.

ALL PLANS

Email Security (SPF, DMARC, DKIM)

Verifies your DNS email records. Without these, anyone can send emails pretending to be your business — the foundation of most phishing attacks.

ALL PLANS

Subdomain Exposure

Scans 30+ common subdomains like admin, staging, vpn, and dev — and flags any that are publicly reachable when they shouldn't be.

ALL PLANS

HTTP→HTTPS Redirect

Checks that your site forces visitors to the encrypted version. Without it, passwords and form data sent over plain HTTP are visible on the network.

ALL PLANS

Cookie Security

Checks that your cookies have Secure, HttpOnly, and SameSite flags. Missing flags let attackers steal session tokens and impersonate logged-in users.

ALL PLANS

CMS Detection

Identifies your platform (WordPress, Shopify, Wix, etc.) so we can flag version-specific vulnerabilities and known exploits in the report.

ALL PLANS

WHOIS & Domain Expiry

Checks your domain registrar and expiry date. A lapsed domain can be registered by someone else and used to impersonate your business overnight.

FULL + PRO

Dark Web Breach Check

Searches breach databases for every incident involving your domain — and lists exactly which emails and data types were exposed.

FULL + PRO

DNS Security (DNSSEC & CAA)

Checks for DNSSEC signing and CAA records. Without these, attackers can hijack your DNS traffic or issue fraudulent SSL certificates for your domain.

FULL + PRO

Broken Link Scanner

Crawls your homepage and checks every internal link. Broken links damage trust and can expose old, unpatched pages still sitting on your server.

PRO ONLY

Port Scan

Scans 17 common ports and flags anything risky that's open to the internet — like RDP, Telnet, or exposed database ports that invite direct attacks.

PRO ONLY

Google Safe Browsing

Checks if your domain is flagged by Google for malware or phishing. A flagged domain shows a full-page warning to every visitor in Chrome and Firefox.

PRO ONLY

Typosquat Detection

Generates and checks 50 lookalike versions of your domain. Registered lookalikes are a common tool for phishing your customers and staff.

PRO ONLY

TLS Certificate Chain

Validates your full certificate chain end-to-end. A broken chain causes browser security warnings that drive visitors away and kill trust immediately.

FULL + PRO

Email Hardening (MTA-STS, DMARC policy)

Goes beyond basic email records: checks MTA-STS and TLS-RPT, flags a weak DMARC policy that only monitors instead of blocking spoofing, and catches an SPF record that's silently broken from too many lookups.

PRO ONLY

Exposed Sensitive Files

Scans for files that should never be public — exposed .git repositories, .env files leaking passwords and API keys, database backups, and directories left open for anyone to browse.

PRO ONLY

Subdomain Takeover Risk

Finds "dangling" subdomains pointing to unclaimed services (GitHub Pages, S3, Heroku, etc.) that an attacker could claim and use to host malicious content under your own domain.

Ready to see where your business stands?

A scan takes minutes to book and could save you from a breach that costs hundreds of thousands.

Book Your Scan →
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