opiniac.com security report

Certificate, security headers, email authentication, DNS, registration, and exposed hosts — from public sources.

63risk

Elevated

Several issues worth triaging this week.

0Critical

2High

3Medium

4Low

2Info

Collected 6 hours ago12.2sfrom cache

Certificate Transparency5
DNS resolution6
Network ownership0
CDN / WAF detection0
Exposed ports & CVEs10
Registration
DNS posture0
Email authentication1
Certificate
Security headers2
Archived URLs
Analysis11

noteCertificate inspection is unavailable in this runtime.
noteNetwork ownership lookup is unavailable in this runtime; ASN and org are omitted.
noteCDN/WAF detection is unavailable in this runtime.

A visitor who types the address without https, or follows an old link, gets the unencrypted site. On public Wi-Fi that page can be read and rewritten in transit.
What to do
Redirect every http:// request to https:// with a 301, then add HSTS.
asset: https://opiniac.com/
SPF and DKIM alone do not protect the From: address a person sees. Without DMARC, a spoofed message can pass SPF for some other domain and still display yours.
What to do
Publish `_dmarc.opiniac.com TXT "v=DMARC1; p=none; rua=mailto:dmarc@opiniac.com"`, review the reports, then move to p=quarantine and p=reject.
asset: opiniac.com
Public SSH invites credential stuffing and key brute force.
What to do
Restrict 22/tcp to a VPN, bastion, or allow-listed source range.
asset: 54.37.131.31:22
Without HSTS the browser will still try http:// first on a fresh visit, which is the window an on-path attacker uses.
What to do
Send `Strict-Transport-Security: max-age=31536000; includeSubDomains` once you are sure everything works over HTTPS.
asset: https://opiniac.com/
CSP is the main defence that limits what an injected script can do. Without it, any XSS bug is fully exploitable.
What to do
Start with a report-only policy, tighten it against the reports, then enforce.
asset: https://opiniac.com/
Check it is not an open relay.
What to do
Restrict 25/tcp to a VPN, bastion, or allow-listed source range.
asset: 51.68.155.82:25
54.37.131.31 (static.opiniac.com) reports nginx 1.26.3, openssh 10.0p2. Publishing precise versions lets anyone match the host against a CVE feed without probing it, which is how targets get shortlisted for mass exploitation after a new advisory lands.
What to do
Suppress version tokens in server banners (for example `ServerTokens Prod` in Apache) and keep the packages current.
asset: 54.37.131.31
Lets browsers guess content types, which turns some upload and text endpoints into script injection points.
What to do
Send `X-Content-Type-Options: nosniff` on every response.
asset: https://opiniac.com/
Answers for this domain are not signed, so a resolver cannot tell a forged response from a real one.
What to do
Enable DNSSEC at your DNS host and publish the DS record at the registrar.
asset: opiniac.com
Mail to this domain can be downgraded to plaintext by an on-path attacker, because senders have no way to know TLS is required.
What to do
Publish an MTA-STS policy (a TXT record plus a small HTTPS-hosted file).
asset: opiniac.com
Any public certificate authority may issue certificates for this domain. CAA lets you name the ones allowed to.
What to do
Add a CAA record naming your CA, e.g. `0 issue "letsencrypt.org"`.
asset: opiniac.com

final https://opiniac.com/status 526time 1333msstack cloudflare

✗http:// redirects to https://
✗Strict-Transport-Security
✗Content-Security-Policy
✓Clickjacking protection
SAMEORIGIN
✗X-Content-Type-Options
✓Referrer-Policy
same-origin
–Permissions-Policyoptional
–security.txt publishedoptional — tells researchers where to report bugs

✓Receives mail via 1 server
mail.yourcx.io
✓SPFends in -all
v=spf1 mx mx:mail2.yourcx.io ip4:51.68.134.97 ip4:51.77.44.27 include:spf.protection.outlook.com -all
✗DMARC
no record
!MTA-STSinbound mail can be downgraded to plaintext

!DNSSECanswers can be forged
–CAAany CA may issue
–IPv6 (AAAA)IPv4 only
✓0 nameservers

✓Registered with Key-Systems GmbH18.4 years old
opiniac.com
✓Registration expiry214 days
2027-04-09
✓Transfer lock
client transfer prohibited
✓3 nameservers at registry
ns10.az.pl ns11.az.pl ns12.az.pl

Address	Ports	CVEs	Edge	Network
51.68.155.82 opiniac.com +5	2580143443587993995	0	direct	—
54.37.131.31 static.opiniac.com +4	2280443	0	direct	—

Archived URLs

Endpoints the Wayback Machine has kept — config files, backups, scripts. Slow to fetch, so it is here on request.

opiniac.com security report

Elevated

Findings

Security headers

Email authentication

DNS

Registration

Hosts

Hostnames