Your websites and servers,
under watch.

We check your sites from outside, match vulnerability feeds, and tell you what to patch — by when, then re-check after the fix.

How signalfort works: your sites and servers are checked against vulnerability databases, and results appear in your dashboard and arrive by emailacme.comyour sitesservers & servicesvulnerability datadashboard · email
Data from open sources
CVEFSTEC BDUCISA KEVEPSSGHSA / OSVEUVDCIRCLMetasploit

PHP2Shell on your site? What to check

A flaw in PHP itself, not a plugin. Checklists for Bitrix, WordPress and VPS — plus an outside check with no agent.

What to do →

How it works

From a list of your sites to a clear answer: what to patch, by when, and a check after the fix.

  1. 01

    Find

    Your sites, subdomains and services — including forgotten and brand-new ones. Plus domain expiry and SSL.

  2. 02

    Match

    We compare the software on your sites with CVE, BDU and other feeds. On top — what attackers already use online.

  3. 03

    Check

    A safe look from outside. “Confirmed” only if the issue is really open — not just a version name match.

  4. 04

    Follow through

    Owner, deadline, email if you’re late, and a re-check. On Business — deeper API checks if you agree.

✓Free to start✓No server access✓14-day Contour trial✓Running in minutes

Up and running in three steps

Nothing to install on servers, no passwords to share. We look from the outside — the way any visitor or attacker would.

  1. 01

    Enter your domain

    Add the company’s site address. We’ll find the subdomains and services.

  2. 02

    Prove you own it

    Add one TXT record in DNS. That’s how we know the domain is yours.

  3. 03

    See the result

    First results in about 10 minutes. After that the check runs on its own.

No server access, no agents

What signalfort does

We find sites, match feeds, confirm the issue, set a deadline and write a report. Nothing to install on the server.

Discovery
Sites · acme.com
acme.ru+14 new
www.acme.runginx
api.acme.runodejs
mail.acme.rupostfix
vpn.acme.ruopenvpn

All your sites in one list

Your domains, subdomains and services. The list updates itself when a new server shows up.

DomainsSubdomainsOpen portsSoftwareCertificates
Vulnerabilities
Issues
.envapi.acme.ru
:9200 open10.0.4.2
AWS keywww.acme.ru
TLS · 6dmail.acme.ru

Vulnerability search

Exposed files with passwords, services with no password, leaked keys and outdated software — plus matching against eight sources.

Exposed filesNo passwordLeaked keysHTTPSOld versions
Confirmation
Confirmation
47 suspects
12 probable
3 confirmed

Only what is really open

Each issue is safely checked. “Confirmed” only after a real probe; on top — what attackers already use online.

Safe checkKnown attacksAttack likelihood (EPSS)
Follow-through
Follow-through
07:37sites re-checked
08:25vulnerability data updated
08:32email: fix deadline passed

Deadline, re-check and report

On Contour — a deadline on the finding, email if you’re late, and a re-check after the fix. On Business — time to answer and to fix, webhooks into your tools, AI assistants over MCP, FSTEC/CRA reports and deeper API checks with consent.

Owner & deadlineRe-checkReportsWebhook · MCP

We also watch domain, SSL, new boxes

Not only CVEs: registration expiry, HTTPS certificates and sudden subdomains. In every plan; on Radar — once a week.

Domain expiry

We warn before registration lapses, so the site doesn’t drop at the registrar.

acme.com · 18 days leftexpiring soon

SSL certificate

Expiry, chain and hostname. An email if HTTPS is about to break.

www.acme.com · TLS · 6 daysrenew

New subdomains

A forgotten staging box appears online — straight into the list and your inbox.

staging.acme.com · found todaynew

Free on Radar · daily on Contour

Not a suspicion list —
what is really open

A scanner often says “version matched”. We mark “confirmed” only after a safe check from outside.

Match
Elasticsearch with no password
search.acme.com:9200
probable

Version and port matched a known vulnerability

After the check
Elasticsearch with no password
search.acme.com:9200
confirmed

The service answered from outside with no password

We keep the fact, not your data
  • ·port 9200 open externally
  • ·response without a password
  • ·version from banner

A CVE just dropped.
Do you need to patch?

In a few minutes you see if it’s on your sites. No week spent in a spreadsheet — patch today, or safely skip it.

CVE-2024-XXXX
example
  1. 09:12CVE published
  2. 09:18matched to the acme.com stack
  3. 09:24safe external check
  4. 09:25answer ready
patch needed

nginx on www.acme.com · update by end of day

signalfort in numbers

Nothing to install: enter your site’s address — and the check starts right away.

10min
to first results
8sources
of vulnerability data
1h
between database updates
24h
between site checks
Open important issues
example: week 1 → week 8
−86%
14
12
9
7
5
4
2
2
12345678

First — what attackers already use

A typical scanner calls half the list “critical”. We raise what is already used in attacks, has a ready exploit or a high chance of attack — not a high CVSS score alone.

Typical scanner
  • CVE-2023-1111 · 9.8
  • CVE-2022-2222 · 9.8
  • CVE-2021-23017 · 9.4
  • CVE-2020-3333 · 9.8
→
signalfort
  • 1.CVE-2021-23017known attacks
  • 2.CVE-2023-1111ready exploit available
  • 3.CVE-2020-3333server faces the internet
  • 4.CVE-2022-2222can wait

Choose a plan

Radar

Free

2 users

1 domain

We watch from the outside and warn you. Touches nothing.

  • CVE, BDU, GHSA, OSV, EUVD, CIRCL feed
  • Priority: known attacks, EPSS and public exploits
  • Subdomains from public sources
  • Weekly domain expiry and SSL monitoring
  • Email on a new subdomain or expiry risk
  • 30-day history
Best fit

Contour

1,490 ₽/mo

5 users

Checks on your schedule, confirmation and fix deadlines.

  • 14-day trial after domain verification
  • Everything in Radar, on your schedule, down to daily
  • Safe active checks from outside
  • Confirmed vulnerabilities and re-checks after fixes
  • Bitrix, 1C and common site stacks
  • Deadlines, owner and email if you’re late
  • Short report for leadership
  • 12-month history

Contour Business

4,490 ₽/mo

20 users

Several domains, regulator reports, webhooks and MCP for AI assistants.

  • Everything in Contour on 5 domains
  • Priority in the check queue
  • Full report plus FSTEC and CRA exports
  • Time to answer and time to fix
  • Webhooks into your tools and AI assistants over MCP
  • Deeper API and access checks with consent
  • 24-month history

Frequently asked questions

How do I check a website for vulnerabilities?

Enter your website’s address and confirm it’s yours by adding one record in your domain settings (a DNS TXT record). signalfort then finds your sites and servers, works out what software they run, and shows the known vulnerabilities, most important first. First results arrive in 10 minutes.

More: check a site from outside →

Do you need access to our servers?

No. We look at your sites from the outside, the way any visitor or attacker sees them. Nothing to install, no passwords to share.

How is signalfort different from a regular scanner?

A scanner hands you a long list of possible issues, and it’s hard to know where to start. We safely check each one, drop the false alarms, put on top flaws already used in attacks online — and follow remediation through to a re-check.

Do you need to patch this CVE →

What exactly do you find?

Files with passwords and settings left open to everyone, database copies, services with no password, leaked access keys, outdated software with known vulnerabilities, and expired or misconfigured HTTPS certificates. On Business — also API and access checks with your test accounts (only if you explicitly agree).

Do you use FSTEC BDU?

Yes. We look at FSTEC BDU, CVE, GHSA/OSV, EUVD and CIRCL. On top — flaws already used in attacks (CISA KEV), easy to exploit (EPSS) and ones with a ready exploit (Metasploit). Feeds update every hour.

CVE and FSTEC BDU: how we match →

How often do you check my sites?

On Radar, once a week: domain expiry, SSL, subdomains and CVE matching. On Contour and Business you choose how often and when, down to daily, and safe active checks from outside are added. If something important appears or a fix deadline passes, you get an email.

SSL and domain expiry monitoring →

What does Contour Business add beyond Contour?

Up to 5 domains, priority in the check queue, a full report plus FSTEC and CRA exports, and time to answer and to fix. Send events to your own tools by webhook, and connect signalfort to an AI assistant over MCP: Claude, Cursor, VS Code and others. The assistant sees your sites and findings without access to your server. Deeper API and access checks with your test accounts run only with your explicit consent. 24-month history.

AI assistant over MCP: why and how it’s safe →

How much does signalfort cost?

Three plans. Radar is free. After the first domain verification you get 14 days of Contour with no card. Then Contour is 1,490 ₽/month (1 domain, +990 ₽ each extra) and Contour Business is 4,490 ₽/month (5 domains, +790 ₽ each extra). Yearly = 10× monthly (−2 months). Monitoring is in every plan; 10+ domains and SSO are invoiced.

Ready to start?

Create an account and add your site. First results in 10 minutes.