Automated public DNS and web checks; results may be incomplete. These are passive observations, not an assessment of the organization.

C75/100

Executive summary

notion.so

Moderate exposure. There are gaps an attacker could exploit — fix them soon.

Partial coverage: the score is based on 95% of applicable check weight. 1 unverified check(s) are excluded, not counted as failures.

2026-11-15 18:19 UTC

Print report / PDF

Useful for your IT provider or a colleague. Anyone with the link can view the report.

Track your progress

Fix the findings, then come back and rescan. Your scan history is saved in this browser so you can see exactly what improved.

Email security22/25

Good83% coverage

Spoofing email from this domain is hard.

Encryption & certificate25/25

Good

Traffic to the site is encrypted and the certificate is valid.

Browser protections21/30

Needs attention

Some browser protections are missing.

DNS infrastructure3/15

Critical

The domain's infrastructure lacks basic protections.

Help someone else check their domain

Share this public report with a colleague. They can review the evidence and check their own domain.

Get the report badge

What to do first

1.
Turn on DNS signing for your domain
Signing helps resolvers detect forged answers about your domain.
Who can fix it: Your domain registrar or DNS provider
How to verify after the fix
```
dig +short DS notion.so
```
2.
Choose which companies may issue certificates for your domain
This reduces the chance of a certificate being issued by a provider you did not choose.
Who can fix it: Your domain registrar or DNS provider
How to verify after the fix
```
dig +short CAA notion.so
```

A starting point, not a security guarantee.

What this grade means

Tested hostname: notion.so
Website request: GET https://notion.so/ → https://www.notion.com/
Scan time: 2026-11-15 18:19:13 UTC
Grading method: Version 2How grading works
Unverified or excluded checks: DKIM — digital signature on email · Not detected (common selectors only)

This is a snapshot of the public configuration checks listed in this report. It does not verify the site's owner, business legitimacy, application security, or absence of vulnerabilities. It is not a security certification.

Get the badge

Show the live grade for notion.so in a README, docs or site footer. The badge links to the public report and refreshes every 24 hours.

Scan shown on this page: ⁦2026-11-15 18:19:13 UTC⁩. The badge may display a cached result for up to 24 hours. Open the linked report to check its scan time.

Markdown

[![Domain Armor grade](https://getmirror.online/badge/notion.so.svg)](https://getmirror.online/report/notion.so)

HTML

<a href="https://getmirror.online/report/notion.so"><img src="https://getmirror.online/badge/notion.so.svg" alt="Domain Armor grade"></a>

Badge URL

https://getmirror.online/badge/notion.so.svg

Scan history

AI fix plan

Pick scans from this browser's history. The AI compares them, explains what changed and builds a prioritized, step-by-step plan.

Scans to analyze

0 of 6 selected

C75/10011/15/26, 06:19 PMCurrent

The current scan is always included.

AI-generated from your scan results only. Review each step before applying it; nothing is sent to or changed on the domain.

Technical detail

Click a check to see the public data, a verification command, a safe fix recommendation and documentation sources.

Email security

22/25

Encryption & certificate

25/25

Browser protections

21/30

DNS infrastructure

3/15

Public DNS records

A	notion.so	208.103.161.17 208.103.161.2 208.103.161.16 208.103.161.1
AAAA	notion.so	2602:f79a::2 2602:f79a:0:1::2 2602:f79a::1 2602:f79a:0:1::1
MX	notion.so	—
NS	notion.so	dana.ns.cloudflare.com woz.ns.cloudflare.com
TXT	notion.so	_eohaffzltripfzavo0ehlmi84k0tkxw facebook-domain-verification=2agf76ffad9vxlxya597jrzil7xoxf google-site-verification=01Xid8U6cE4LuiG2OeRTL-hnDC9MxKvVD6mAgAS51Oo google-site-verification=LBOGI6TChsA_9vwaJYLU7RXgunDGAWKG0fcHxiU2-o4 google-site-verification=U2r6h9FWkKMadZDxW94daNJ1YUGXP-9_tJ7PUYfYz4c google-site-verification=_aahlmtDiPlbg224pU3M_8w9Ka-3tcGUmBd6ZW052AU proxy-ssl.webflow.com v=spf1 ~all
TXT	_dmarc.notion.so	v=DMARC1; p=quarantine; pct=100; rua=mailto:re+1b3a27dd30bc@inbound.dmarcdigests.com;
CAA	notion.so	—
DS	notion.so	—

Fix priorities

Sorted by risk: severity first, confirmed issues before hardening gaps, then effort and score impact.

1MediumDNSSEC — signed DNS recordsHardening gap+7
2LowCAA — who may issue certificatesHardening gap+5
3LowX-Content-Type-OptionsHardening gap+4
4LowPermissions-PolicyHardening gap+2
5LowCSP — protection from script injectionHardening gap+3

To verify

Couldn't be confirmed from public data, so excluded from the score. Checking them clarifies your posture; it doesn't guarantee a score change.

DKIM — digital signature on email

Indicative alignment

Best-practice mapping of public findings to common frameworks. Passive scanning tests public configuration only; it doesn't prove compliance or a violation.

Google & Yahoo sender rulesIncomplete evidence · 1 unverified
SPF, DKIM and DMARC are required for bulk senders to Gmail and Yahoo; missing them risks rejected or spam-foldered mail.
PCI DSS v4.01 observed gaps
TLS, certificate and browser-header protections relate to PCI DSS v4.0 requirements 4.2 and 6.4 for payment pages.
CSP — protection from script injection
NIS2 / vendor due diligence2 observed gaps
Vendor risk reviews under NIS2/DORA and cyber-insurance questionnaires check these public signals.
DNSSEC — signed DNS records CAA — who may issue certificates
SOC 2 / ISO 27001 baseline2 observed gaps
Baseline external hygiene commonly expected in SOC 2 and ISO 27001 audits.
CSP — protection from script injection X-Content-Type-Options

Indicative alignment only, based on public configuration. It doesn't establish whether a framework applies to you, and it isn't legal advice, an audit or a certification.

Head-to-head vs competitor

How do you stack up against competitors?

The check reads public data only and makes no changes to the domain. Recommendations are intended for the domain owner.

Is your domain as secure? Scan it free, no sign-up

All pre-scanned domains

notion.so

Moderate exposure. There are gaps an attacker could exploit — fix them soon.

Partial coverage: the score is based on 95% of applicable check weight. 1 unverified check(s) are excluded, not counted as failures.

2026-11-15 18:19 UTC

Useful for your IT provider or a colleague. Anyone with the link can view the report.

What to do first

Turn on DNS signing for your domain

Signing helps resolvers detect forged answers about your domain.

Who can fix it: Your domain registrar or DNS provider

How to verify after the fix

dig +short DS notion.so

Choose which companies may issue certificates for your domain

This reduces the chance of a certificate being issued by a provider you did not choose.

Who can fix it: Your domain registrar or DNS provider

How to verify after the fix

dig +short CAA notion.so

What this grade means

Tested hostname

notion.so

Website request

GET https://notion.so/ → https://www.notion.com/

Scan time

2026-11-15 18:19:13 UTC

Grading method

Version 2How grading works

Unverified or excluded checks

DKIM — digital signature on email · Not detected (common selectors only)

Technical detail

Click a check to see the public data, a verification command, a safe fix recommendation and documentation sources.

Email security

22/25

Encryption & certificate

25/25

Browser protections

21/30

DNS infrastructure

3/15

Public DNS records

A	notion.so	208.103.161.17 208.103.161.2 208.103.161.16 208.103.161.1
AAAA	notion.so	2602:f79a::2 2602:f79a:0:1::2 2602:f79a::1 2602:f79a:0:1::1
MX	notion.so	—
NS	notion.so	dana.ns.cloudflare.com woz.ns.cloudflare.com
TXT	notion.so	_eohaffzltripfzavo0ehlmi84k0tkxw facebook-domain-verification=2agf76ffad9vxlxya597jrzil7xoxf google-site-verification=01Xid8U6cE4LuiG2OeRTL-hnDC9MxKvVD6mAgAS51Oo google-site-verification=LBOGI6TChsA_9vwaJYLU7RXgunDGAWKG0fcHxiU2-o4 google-site-verification=U2r6h9FWkKMadZDxW94daNJ1YUGXP-9_tJ7PUYfYz4c google-site-verification=_aahlmtDiPlbg224pU3M_8w9Ka-3tcGUmBd6ZW052AU proxy-ssl.webflow.com v=spf1 ~all
TXT	_dmarc.notion.so	v=DMARC1; p=quarantine; pct=100; rua=mailto:re+1b3a27dd30bc@inbound.dmarcdigests.com;
CAA	notion.so	—
DS	notion.so	—

Indicative alignment

Best-practice mapping of public findings to common frameworks. Passive scanning tests public configuration only; it doesn't prove compliance or a violation.

Google & Yahoo sender rulesIncomplete evidence · 1 unverified

SPF, DKIM and DMARC are required for bulk senders to Gmail and Yahoo; missing them risks rejected or spam-foldered mail.

PCI DSS v4.01 observed gaps

TLS, certificate and browser-header protections relate to PCI DSS v4.0 requirements 4.2 and 6.4 for payment pages.

CSP — protection from script injection

NIS2 / vendor due diligence2 observed gaps

Vendor risk reviews under NIS2/DORA and cyber-insurance questionnaires check these public signals.

DNSSEC — signed DNS records CAA — who may issue certificates

SOC 2 / ISO 27001 baseline2 observed gaps

Baseline external hygiene commonly expected in SOC 2 and ISO 27001 audits.

CSP — protection from script injection X-Content-Type-Options

Indicative alignment only, based on public configuration. It doesn't establish whether a framework applies to you, and it isn't legal advice, an audit or a certification.

notion.so

Track your progress

Help someone else check their domain

What to do first

What this grade means

Get the badge

Scan history

AI fix plan

Scans to analyze

Technical detail

Email security

Encryption & certificate

Browser protections

DNS infrastructure

Public DNS records

Is your domain as secure? Scan it free, no sign-up

notion.so

Track your progress

Help someone else check their domain

What to do first

What this grade means

Get the badge

Scan history

AI fix plan

Scans to analyze

Technical detail

Email security

Encryption & certificate

Browser protections

DNS infrastructure

Public DNS records

Is your domain as secure? Scan it free, no sign-up

Agent access & discovery signals