cursor.sh

15-check dossier · scoreboard above, section details below

Get a pack →

Scanning…

dns

info

Open standalone →

resolving…

mx

info

Open standalone →

resolving mx…

spf

info

Open standalone →

resolving spf…

dmarc

info

Open standalone →

resolving dmarc…

dkim

info

Open standalone →

probing dkim selectors…

tls

info

Open standalone →

fetching tls cert…

redirects

info

Open standalone →

tracing redirects…

headers

info

Open standalone →

fetching headers…

cors

info

Open standalone →

sending preflight…

web-surface

info

Open standalone →

inspecting web surface…

dnssec

info

Open standalone →

checking dnssec…

mta-sts

info

Open standalone →

checking mta-sts…

tls-rpt

info

Open standalone →

checking tls-rpt…

whois

info

Open standalone →

resolving whois…

ct-log

info

Open standalone →

querying CT logs…

additional context — IP + user-agent lookups

lookups that complement a dossier — useful when investigating a finding, but not part of the dossier engine itself.

IP lookup — geolocation, ASN, ISP for any IP address surfaced by the DNS or redirect sections.
user-agent parser — the browser/OS/device the request came from.
single-record DNS lookup — drill into one record type at a time.

cursor.sh

15-check dossier · scoreboard above, section details below

Get a pack →

C+

7 items need attention

Aggregate grade across 15 checks. Auditors typically flag any High-severity finding.

Pass: 8
Warn: 7
Fail: 0

What an auditor would flag first

medium
SPF
~all softfail — receivers may still accept
SOC 2 CC6.7ISO 27001 A.13.2.1
medium
DMARC
p=none — monitoring only, no enforcement
SOC 2 CC6.7ISO 27001 A.13.2.1
medium
Redirect chain
redirects to different domain: cursor.com
SOC 2 CC6.6

Need this as an artifact your auditor can verify?

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Scanning…

15-check summary

DNS recordsA/AAAA records present
MX5 MX record(s) present
SPF~all softfail — receivers may still accept
DMARCp=none — monitoring only, no enforcement
DKIM1/6 DKIM selectors valid
TLS certificatecert expires in 57 days
Redirect chainredirects to different domain: cursor.com
Security headers4 security header(s) missing
CORSno CORS headers — cross-origin requests blocked by default
Web surfaceHTTPS surface reachable (robots ✓, sitemap ✓, title ✓)
MTA-STSnot applicable: no _mta-sts TXT record
TLS-RPTnot applicable: no TLSRPT record
DNSSECDNSSEC not configured — no DS or DNSKEY records found
WHOISdomain registered until 2027-04-05
Certificate Transparencycheck failed: crt.sh: Error: crt.sh http 429; certspotter: Error: certspotter http 429

dns

info

Open standalone →

A/AAAA records present

Why it matters: Without authoritative A or AAAA records on the apex, the domain is unreachable. Missing baseline DNS shows up in vendor reviews as evidence of unmanaged infrastructure (SOC 2 CC6.6).

A: ttl=300 76.76.21.21
AAAA: —
NS: ttl=168717 ns-1143.awsdns-14.org.
ttl=168717 ns-1554.awsdns-02.co.uk.
ttl=168717 ns-70.awsdns-08.com.
ttl=168717 ns-896.awsdns-48.net.
SOA: ttl=900 ns-1143.awsdns-14.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
CAA: —
TXT: ttl=300 "google-site-verification=C1TncBZ0C00dMCHHosS_vTyRPM02dJCJsKN2zkcfFZ0"
ttl=300 "v=spf1 include:_spf.google.com ~all"

fetched 2026-05-23T09:22:47.324Z

dns

info

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resolving…

mx

info

Open standalone →

5 MX record(s) present

Why it matters: MX records direct inbound mail. Misconfiguration silently breaks email delivery and lets attackers stand up parallel MX hosts for spoofing campaigns (ISO 27001 A.8.21).

pri=1 aspmx.l.google.com.
pri=5 alt1.aspmx.l.google.com.
pri=5 alt2.aspmx.l.google.com.
pri=10 alt3.aspmx.l.google.com.
pri=10 alt4.aspmx.l.google.com.

fetched 2026-05-23T09:22:47.321Z

mx

info

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resolving mx…

spf

medium

Open standalone →

~all softfail — receivers may still accept

Why it matters: SPF tells receiving servers which hosts may send mail for the domain. Without it, any sender can forge the envelope-from — the primary mechanism behind business-email-compromise (SOC 2 CC6.7).

Recommendations

Move to -all (hardfail) once your mail flow is confirmed — softfail gives no real protection

v=spf1 include:_spf.google.com ~all

v=spf1
include:_spf.google.com
~all

fetched 2026-05-23T09:22:47.308Z

spf

info

Open standalone →

resolving spf…

dmarc

medium

Open standalone →

p=none — monitoring only, no enforcement

Why it matters: DMARC binds SPF and DKIM into an enforceable policy (quarantine or reject) and surfaces spoofing attempts via aggregate reports. `p=none` or absent means spoofing succeeds silently (SOC 2 CC6.7).

Recommendations

Review rua= aggregate reports to confirm legitimate mail passes SPF/DKIM
Move to p=quarantine and then p=reject once mail flow is validated

v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email;

v=: DMARC1
p=: none
rua=: mailto:dmarc_agg@vali.email

fetched 2026-05-23T09:22:47.308Z

dmarc

info

Open standalone →

resolving dmarc…

dkim

low

Open standalone →

1/6 DKIM selectors valid

Why it matters: DKIM signs outbound mail so receivers can detect tampering. Missing selectors or rotated-away keys break DMARC alignment and let receivers downgrade trust (ISO 27001 A.8.24).

Recommendations

Check the missing selectors in your DNS provider and re-add any removed records

default:: —
google:: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2R0YdapOx6WKXDuLOkA+PG7auvkUYKpq9yrIXUycOtlSLZdQ2gXvYHyd1GD5gLnJLudmKu8tSHVMITbYfJbOkE6YWW15Bdwnp2hDRSga2qJqq7N/BGudx/aPSEIDheWVRAVrngKSEbx/HUYpjKxtDFHHJW6VBUyzoSsvuOGX7bh8yqCdVDrKtceQlG1UgAp/rT5+Q2B9Qr0cFf3WZg5jy2bTQEptuMjkmHfq1vxcYEN+z2bwDVZ2HNOw6vUj0PvWhKWf6AloQ3bRPLRSKFIyMKBlywwxWBjAyGP03/rOiOkAmJkun1PTBpkCxfzUziaTd05gw2TWWEddCxiTLy4+VQIDAQAB
k1:: —
selector1:: —
selector2:: —
mxvault:: —

fetched 2026-05-23T09:22:47.311Z

dkim

info

Open standalone →

probing dkim selectors…

tls

low

Open standalone →

cert expires in 57 days

Why it matters: A valid current TLS certificate is the baseline for data in transit. Expiry, weak chain, or hostname mismatch break HTTPS and fail PCI 4.2.1 / SOC 2 CC6.1.

Recommendations

Schedule certificate renewal — consider enabling auto-renewal

subject cn:: cursor.sh
issuer:: R13 / Let's Encrypt
valid:: Apr 21 03:13:50 2026 GMT → Jul 20 03:13:49 2026 GMT
authorized:: yes
sha256:: 39:4E:08:0F:39:68:4B:DD:71:68:0F:14:D3:B0:27:4F:3A:D2:19:96:5A:19:DC:57:71:95:0D:A4:A3:21:33:C0
sans: cursor.sh

fetched 2026-05-23T09:22:47.363Z

tls

info

Open standalone →

fetching tls cert…

redirects

medium

Open standalone →

redirects to different domain: cursor.com

Why it matters: Bare HTTP requests must redirect to HTTPS without dropping the user mid-chain. Plain-text fallback or open redirects fail PCI 4.2.1 and feed phishing chains (SOC 2 CC6.6).

Recommendations

Verify this cross-domain redirect is intentional (e.g. domain migration or CDN)
Ensure the destination domain is owned and expected — unintended redirects can leak traffic

final status: 200 · 2 hops

[308] https://cursor.sh/
[200] https://cursor.com/

fetched 2026-05-23T09:22:47.523Z

redirects

info

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tracing redirects…

headers

low

Open standalone →

4 security header(s) missing

Why it matters: Security headers — HSTS, CSP, X-Frame-Options, Referrer-Policy — defend against XSS, clickjacking, and downgrade attacks. Absent headers map directly to OWASP ASVS V14 findings (ISO 27001 A.8.23).

Recommendations

Add response header — X-Frame-Options: DENY (or SAMEORIGIN if framing is intended)
Add response header — X-Content-Type-Options: nosniff
Add response header — Referrer-Policy: strict-origin-when-cross-origin
Add permissions-policy response header

final url: https://cursor.com/

security headers

strict-transport-security: max-age=63072000
content-security-policy: default-src 'self' ; script-src 'self' 'unsafe-inline' 'unsafe-eval' cursor.com *.cursor.com cursor.sh *.cursor.sh *.tiktok.com alb.reddit.com pixel-config.reddit.com www.redditstatic.com *.unifyintent.com *.cloudfront.net pro.ip-api.com *.liadm.com *.usbrowserspeed.com alocdn.com va.vercel-scripts.com vercel.live jobs.ashbyhq.com os.ryo.lu connect.facebook.net js.zi-scripts.com ws-assets.zoominfo.com *.chilipiper.com www.googletagmanager.com *.googletagmanager.com *.roadwayai.com www.googleadservices.com www.google.com pagead2.googlesyndication.com *.doubleclick.net s.pinimg.com chat.cdn-plain.com ; connect-src 'self' cursor.com *.cursor.com cursor.sh *.cursor.sh unifyintent.com *.unifyintent.com *.cloudfront.net pro.ip-api.com *.liadm.com *.usbrowserspeed.com alocdn.com 9xgnrndqve.execute-api.us-west-2.amazonaws.com api.ashbyhq.com jobs.ashbyhq.com api.conceptualhq.com ip.conceptualhq.com *.facebook.com facebook.com featureassets.org prodregistryv2.org youtube.com *.youtube.com js.zi-scripts.com ws.zoominfo.com *.zoominfo.com *.chilipiper.com www.googletagmanager.com *.google-analytics.com analytics.google.com *.analytics.google.com *.roadwayai.com *.mux.com stream.mux.com inferred.litix.io pagead2.googlesyndication.com www.googleadservices.com *.doubleclick.net www.google.ad www.google.ae www.google.al www.google.am www.google.as www.google.at www.google.az www.google.ba www.google.be www.google.bf www.google.bg www.google.bi www.google.bj www.google.bs www.google.bt www.google.by www.google.ca www.google.cat www.google.cd www.google.cf www.google.cg www.google.ch www.google.ci www.google.cl www.google.cm www.google.cn www.google.co.ao www.google.co.bw www.google.co.ck www.google.co.cr www.google.co.id www.google.co.il www.google.co.in www.google.co.jp www.google.co.ke www.google.co.kr www.google.co.ls www.google.co.ma www.google.co.mz www.google.co.nz www.google.co.th www.google.co.tz www.google.co.ug www.google.co.uk www.google.co.uz www.google.co.ve www.google.co.vi www.google.co.za www.google.co.zm www.google.co.zw www.google.com www.google.com.af www.google.com.ag www.google.com.ar www.google.com.au www.google.com.bd www.google.com.bh www.google.com.bn www.google.com.bo www.google.com.br www.google.com.bz www.google.com.co www.google.com.cu www.google.com.cy www.google.com.do www.google.com.ec www.google.com.eg www.google.com.et www.google.com.fj www.google.com.gh www.google.com.gi www.google.com.gt www.google.com.hk www.google.com.jm www.google.com.kh www.google.com.kw www.google.com.lb www.google.com.ly www.google.com.mm www.google.com.mt www.google.com.mx www.google.com.my www.google.com.na www.google.com.ng www.google.com.ni www.google.com.np www.google.com.om www.google.com.pa www.google.com.pe www.google.com.pg www.google.com.ph www.google.com.pk www.google.com.pr www.google.com.py www.google.com.qa www.google.com.sa www.google.com.sb www.google.com.sg www.google.com.sl www.google.com.sv www.google.com.tj www.google.com.tr www.google.com.tw www.google.com.ua www.google.com.uy www.google.com.vc www.google.com.vn www.google.cv www.google.cz www.google.de www.google.dj www.google.dk www.google.dm www.google.dz www.google.ee www.google.es www.google.fi www.google.fm www.google.fr www.google.ga www.google.ge www.google.gg www.google.gl www.google.gm www.google.gr www.google.gy www.google.hn www.google.hr www.google.ht www.google.hu www.google.ie www.google.im www.google.iq www.google.is www.google.it www.google.je www.google.jo www.google.kg www.google.ki www.google.kz www.google.la www.google.li www.google.lk www.google.lt www.google.lu www.google.lv www.google.md www.google.me www.google.mg www.google.mk www.google.ml www.google.mn www.google.mu www.google.mv www.google.mw www.google.ne www.google.nl www.google.no www.google.nr www.google.nu www.google.pl www.google.pn www.google.ps www.google.pt www.google.ro www.google.rs www.google.ru www.google.rw www.google.sc www.google.se www.google.sh www.google.si www.google.sk www.google.sm www.google.sn www.google.so www.google.sr www.google.st www.google.td www.google.tg www.google.tl www.google.tm www.google.tn www.google.to www.google.tt www.google.vu www.google.ws *.tiktok.com *.tiktokw.us pixel-config.reddit.com alb.reddit.com s.pinimg.com chat.uk.plain.com prod-uk-services-attachm-attachmentsuploadbucket2-1l2e4906o2asm.s3.eu-west-2.amazonaws.com ; worker-src 'self' blob: data: cursor.com *.cursor.com cursor.sh *.cursor.sh ; style-src 'self' 'unsafe-inline' cursor.com *.cursor.com cursor.sh *.cursor.sh fonts.googleapis.com ; img-src 'self' blob: data: cursor.com *.cursor.com cursor.sh *.cursor.sh *.tiktok.com alb.reddit.com www.redditstatic.com *.public.blob.vercel-storage.com *.facebook.com facebook.com *.chilipiper.com www.googletagmanager.com *.google-analytics.com *.mux.com image.mux.com images.lumacdn.com cdn.lu.ma prod-uk-services-workspac-workspacefilespublicbuck-vs4gjqpqjkh6.s3.amazonaws.com prod-uk-services-attachm-attachmentsbucket28b3ccf-uwfssb4vt2us.s3.eu-west-2.amazonaws.com i0.wp.com *.doubleclick.net pagead2.googlesyndication.com www.googleadservices.com www.google.ad www.google.ae www.google.al www.google.am www.google.as www.google.at www.google.az www.google.ba www.google.be www.google.bf www.google.bg www.google.bi www.google.bj www.google.bs www.google.bt www.google.by www.google.ca www.google.cat www.google.cd www.google.cf www.google.cg www.google.ch www.google.ci www.google.cl www.google.cm www.google.cn www.google.co.ao www.google.co.bw www.google.co.ck www.google.co.cr www.google.co.id www.google.co.il www.google.co.in www.google.co.jp www.google.co.ke www.google.co.kr www.google.co.ls www.google.co.ma www.google.co.mz www.google.co.nz www.google.co.th www.google.co.tz www.google.co.ug www.google.co.uk www.google.co.uz www.google.co.ve www.google.co.vi www.google.co.za www.google.co.zm www.google.co.zw www.google.com www.google.com.af www.google.com.ag www.google.com.ar www.google.com.au www.google.com.bd www.google.com.bh www.google.com.bn www.google.com.bo www.google.com.br www.google.com.bz www.google.com.co www.google.com.cu www.google.com.cy www.google.com.do www.google.com.ec www.google.com.eg www.google.com.et www.google.com.fj www.google.com.gh www.google.com.gi www.google.com.gt www.google.com.hk www.google.com.jm www.google.com.kh www.google.com.kw www.google.com.lb www.google.com.ly www.google.com.mm www.google.com.mt www.google.com.mx www.google.com.my www.google.com.na www.google.com.ng www.google.com.ni www.google.com.np www.google.com.om www.google.com.pa www.google.com.pe www.google.com.pg www.google.com.ph www.google.com.pk www.google.com.pr www.google.com.py www.google.com.qa www.google.com.sa www.google.com.sb www.google.com.sg www.google.com.sl www.google.com.sv www.google.com.tj www.google.com.tr www.google.com.tw www.google.com.ua www.google.com.uy www.google.com.vc www.google.com.vn www.google.cv www.google.cz www.google.de www.google.dj www.google.dk www.google.dm www.google.dz www.google.ee www.google.es www.google.fi www.google.fm www.google.fr www.google.ga www.google.ge www.google.gg www.google.gl www.google.gm www.google.gr www.google.gy www.google.hn www.google.hr www.google.ht www.google.hu www.google.ie www.google.im www.google.iq www.google.is www.google.it www.google.je www.google.jo www.google.kg www.google.ki www.google.kz www.google.la www.google.li www.google.lk www.google.lt www.google.lu www.google.lv www.google.md www.google.me www.google.mg www.google.mk www.google.ml www.google.mn www.google.mu www.google.mv www.google.mw www.google.ne www.google.nl www.google.no www.google.nr www.google.nu www.google.pl www.google.pn www.google.ps www.google.pt www.google.ro www.google.rs www.google.ru www.google.rw www.google.sc www.google.se www.google.sh www.google.si www.google.sk www.google.sm www.google.sn www.google.so www.google.sr www.google.st www.google.td www.google.tg www.google.tl www.google.tm www.google.tn www.google.to www.google.tt www.google.vu www.google.ws ct.pinterest.com ; media-src 'self' blob: data: cursor.com *.cursor.com cursor.sh *.cursor.sh *.public.blob.vercel-storage.com *.mux.com stream.mux.com ; font-src 'self' cursor.com *.cursor.com cursor.sh *.cursor.sh fonts.gstatic.com ; object-src 'none' ; base-uri 'self' ; form-action 'self' cursor.com *.cursor.com cursor.sh *.cursor.sh vercel.live *.chilipiper.com ; frame-src 'self' cursor.com *.cursor.com cursor.sh *.cursor.sh vercel.live jobs.ashbyhq.com youtube.com *.youtube.com youtu.be *.chilipiper.com www.googletagmanager.com chat.uk.plain.com *.plain.com ; frame-ancestors 'self' cursor.com *.cursor.com cursor.sh *.cursor.sh ; upgrade-insecure-requests;

headers

info

Open standalone →

fetching headers…

cors

info

Open standalone →

no CORS headers — cross-origin requests blocked by default

Why it matters: Overly permissive CORS (wildcard with credentials, or reflected origin) lets any origin read authenticated responses from this domain. OWASP A05 misconfiguration territory (NIST AC-4).

origin: https://drwho.me
method: GET
preflight status: 308

access-control-* headers

access-control-allow-origin: —
access-control-allow-methods: —
access-control-allow-headers: —
access-control-allow-credentials: —
access-control-max-age: —
access-control-expose-headers: —

no access-control-* headers returned — site does not advertise CORS to this origin

fetched 2026-05-23T09:22:47.409Z

cors

info

Open standalone →

sending preflight…

web-surface

info

Open standalone →

HTTPS surface reachable (robots ✓, sitemap ✓, title ✓)

Why it matters: Public files — robots.txt, sitemap.xml, head meta — are what attackers see first during reconnaissance. Misadvertised paths, stale sitemaps, and verbose generators leak more than intended (ISO 27001 A.8.9).

robots.txt

present

# *
User-agent: *
Allow: /
Allow: /marketplace
Allow: /*/marketplace
Disallow: /api/
Disallow: /dashboard
Disallow: /*/dashboard
Disallow: /agents
Disallow: /*/agents
Disallow: /settings/
Disallow: /*/settings/
Disallow: /marketplace/publish$
Disallow: /*/marketplace/publish$
Disallow: /team/accept-invite
Disallow: /*/team/accept-invite
Disallow: /team/free-trial
Disallow: /team/new-team
Disallow: /*/team/new-team
Disallow: /verifyEmail
Disallow: /*/verifyEmail
Disallow: /failure
Disallow: /*/failure
Disallow: /loginDeepControl
Disallow: /*/loginDeepControl
Disallow: /loginDeepPage
Disallow: /*/loginDeepPage
Disallow: /pricing-history
Disallow: /*/pricing-history
Disallow: /artifacts/c/
Disallow: /artifacts/v/
Disallow: /marketing-static/
Disallow: /docs-static/
Disallow: /link/prompt
Disallow: /*/link/prompt
Disallow: /*/docs
Disallow: /*/docs/
Disallow: /*/learn
Disallow: /*/learn/
Disallow: /*/help
Disallow: /*/help/
Disallow: /*/for
Disallow: /*/for/

# Host
Host: https://cursor.com

# Sitemaps
Sitemap: https://cursor.com/sitemap_index.xml
Sitemap: https://forum.cursor.com/sitemap.xml

sitemap.xml

present — 107 url(s)

head

title: Cursor: The best way to code with AI
description: Built to make you extraordinarily productive, Cursor is the best way to build software with AI.

social

og:title: The best way to code with AI
og:description: Built to make you extraordinarily productive, Cursor is the best way to build software with AI.
og:url: https://cursor.com
og:site_name: Cursor
og:locale: en-US
og:image: https://cursor.com/public/opengraph-image.png
og:type: website
twitter:card: summary_large_image
twitter:title: The best way to code with AI
twitter:description: Built to make you extraordinarily productive, Cursor is the best way to build software with AI.
twitter:image: https://cursor.com/public/opengraph-image.png

fetched 2026-05-23T09:22:47.522Z

web-surface

info

Open standalone →

inspecting web surface…

dnssec

low

Open standalone →

DNSSEC not configured — no DS or DNSKEY records found

Why it matters: DNSSEC cryptographically signs DNS responses, blocking cache-poisoning attacks. US federal civilian agencies are required to enable it under OMB M-22-09 (NIST SC-20).

Recommendations

Enable DNSSEC in your DNS provider's control panel and add the resulting DS record at your registrar

enabled: no
DS records: —
DNSKEY records: —

fetched 2026-05-23T09:22:47.466Z

dnssec

info

Open standalone →

checking dnssec…

mta-sts

info

Open standalone →

not applicable: no _mta-sts TXT record

Why it matters: MTA-STS forces inbound SMTP to use TLS and refuse downgraded connections. Without it, an in-path attacker can strip TLS and read mail in plaintext (SOC 2 CC6.7).

no _mta-sts TXT record

mta-sts

info

Open standalone →

checking mta-sts…

tls-rpt

info

Open standalone →

not applicable: no TLSRPT record

Why it matters: TLS-RPT publishes a reporting address for SMTP-TLS failures. Without it, downgrade attacks on inbound mail go unnoticed (SOC 2 CC7.2).

no TLSRPT record

tls-rpt

info

Open standalone →

checking tls-rpt…

whois

info

Open standalone →

domain registered until 2027-04-05

Why it matters: Registrar and expiry tell auditors the domain is owned, current, and not about to lapse. An expired or about-to-expire domain fails business-continuity evidence (SOC 2 A1.2).

registrar: NameCheap, Inc.
created: 2023-04-05T07:53:26Z
expires: 2027-04-05T07:53:26Z
statuses: clientTransferProhibited https://icann.org/epp#clientTransferProhibited

fetched 2026-05-23T09:22:48.100Z

whois

info

Open standalone →

resolving whois…

ct-log

info

Open standalone →

check failed: crt.sh: Error: crt.sh http 429; certspotter: Error: certspotter http 429

Why it matters: Every certificate issued for this domain is published in Certificate Transparency logs — including subdomains you may have forgotten. Unknown subdomains in CT are pre-disclosed attack surface (ISO 27001 A.8.16).

crt.sh: Error: crt.sh http 429; certspotter: Error: certspotter http 429

ct-log

info

Open standalone →

querying CT logs…

additional context — IP + user-agent lookups

lookups that complement a dossier — useful when investigating a finding, but not part of the dossier engine itself.

IP lookup — geolocation, ASN, ISP for any IP address surfaced by the DNS or redirect sections.
user-agent parser — the browser/OS/device the request came from.
single-record DNS lookup — drill into one record type at a time.