AltoShield — Free Domain & Email Security Snapshot

DOMAIN & EMAIL SECURITY

Could someone send an email pretending to be you? An under-the-hood scan of your domain and email security — the exposure most owners never notice until someone else finds it first. Get started with a free AltoShield Snapshot — no login, no attack traffic, nothing installed. Just a scan of what's already public.

Get your free snapshot

84%

of businesses have no DMARC protection at all

90%+

of cyberattacks begin with a phishing or spoofed email

77%+

haven't closed even the basic email-authentication gap

Your domain is part of your brand — and it may be unguarded right now

Spoofing and impersonation don't just risk a breach. They spend the trust your name has earned. It's fast becoming the first thing cyber-insurers and larger clients check before they'll work with you. AltoShield shows you exactly where you stand — free.

Real-world risk

Without DMARC, criminals can send fake invoices "from you." An attacker spoofing your billing address, sent to one of your actual clients, can cost you more than money — it costs the relationship.

WHAT WE CHECK

What we check

Email spoofing exposure

SPF (and whether its "all" qualifier is actually enforcing anything); DKIM (common selectors); DMARC (present? monitoring-only or blocking? reporting configured?)

DNS & mail transport hardening

DNSSEC; MTA-STS; TLS-RPT; MX record presence

Web transport

HTTPS enforced; certificate validity & expiry; TLS version

Security headers

HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy

Version disclosure

Server/software version banners that hand attackers a head start

84% of businesses have no DMARC protection at all — meaning anyone can send email that looks like it came from their domain.

HOW IT WORKS

From Scan to Fixed, In Four Steps

STEP 01

Scan

We check your domain's email authentication, DNS hardening, web TLS, and security headers. Entirely passive, entirely public data.

STEP 02

Score

A 0–100 posture score, scored the same way every time so it's comparable if you check again later.

STEP 03

Report

A branded posture scorecard, framed around what a cyber-insurer or compliance check would actually ask for.

STEP 04

Fix

Want it handled, not just reported? We can safely implement the DNS and header changes for you, without disrupting your business, then re-scan to confirm.

Find out where you stand — free

No login, no attack traffic, nothing installed — just a scan of what's already public. Get your branded posture scorecard today.

Get your free snapshot