# Server says "200 OK". It's lying

> Source: <https://silens.no/>
> Published: 2026-09-07 17:49:58+00:00

# Silens — operational monitoring & security intelligence: uptime, certificates, DNS, attack surface and zero-day exposure monitoring for small and mid-size teams

Your infrastructure is lying to you

**Silens watches what your monitoring doesn't.**

Silent failures, security
    exposure, expiring certs, broken backups, suspicious changes and emerging threats
    — caught *before* they become incidents.

No credit card. No agent. No noise.

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**"what should I worry about today?"**— grounded in live data, never invented numbers.

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Green isn't the same as working. Silens checks the difference — and tells you before it costs you.

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Who is this for

## What Silens does for you, on a normal Tuesday

[Run an online store](/tools/domain-check)

Silens warns you **before** your certificate expires and checkout dies mid-sale. And if your payment provider has trouble, you know before your customers complain.

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[Depend on suppliers](#)

Your hosting provider goes bankrupt — you hear it **from Silens**, not from your servers going dark. Bankruptcy, leadership changes, financial warning signs.

## [Keep it up →](/operational)

The failures that stay silent while everything looks green.

- ✓ Disk-full prediction
- ✓ Frozen / 0-byte backups
- ✓ Degraded RAID
- ✓ Cert & domain expiry
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- ✓ URL / content / response time
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## [Keep it safe →](/security)

What attackers see about you — before they use it.

- › Attack surface & exposed ports
- › Origin exposure / CDN bypass
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- › Blocklist, email auth, breach
- › Security score & drift over time
- › Forgotten assets & concentration risk

One service. Both worlds. From operations to attack surface — Silens sees what you'd otherwise find out too late.

🏢 Supplier watch · unique to Silens

## The failure that isn't on your servers — it's at your supplier's

Your hosting provider, your accountant, the consultant with your deploy keys — when one of them gets into trouble, you usually find out far too late. Silens watches the companies you depend on in Brønnøysund and warns you early.

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Free open Norwegian data (Brønnøysund + Norges Bank). No international competitor builds this for Norwegian SMBs.

[☀️
Daybreak — your AI morning briefing 07:00
Everything that changed overnight — your systems and the threat landscape — in one calm report with your coffee.
→](/register)

[🌍 Cyber Weather live
See what's happening on the attack front right now — before your morning coffee · 🤖 ask it anything
→](/threats)

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Alerts where you already are

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[See everything Silens does →](#)

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### Check a cert / domain

See when any site's TLS certificate and domain registration expire.

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Check SPF, DKIM and DMARC — the records that keep your mail out of spam.

[Check email →](/tools/email-check)

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See if your email or domain turned up in a known breach. Nothing stored.

[Check breaches →](#)

### 👁️ See what attackers see

Your whole external attack surface for one domain — the way an attacker maps it.

[Scan surface →](#)

### Config score 🛡️

One score for your domain's whole security setup — email, DNS, TLS, headers.

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### End-of-life check 📆

Is your Ubuntu, PHP or Windows still supported — or quietly past end-of-life?

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[**See all 15+ free tools →**](#)  ·  Try one on your own domain — then let Silens watch it and alert you before anything expires or changes.

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- 15+ free security tools — check any domain, CVE, password & more
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- 🧟 Zombie assets · 🌐 Routing · 🎣 Phishing · 🧨 Chaos Engine
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Intelligence-grade — before it becomes a problem.

- Everything in Pro
- **🔮 Predictive alerts** — "disk full in 6 days", EOL warnings
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- 👻 Shadow infrastructure · breach & CT monitoring · public status page

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## Your systems are talking.

## Silens listens.

    Infrastructure. Security. Exposure. Threats.

One place. One answer:

What should I worry about today?

[Start watching — free →](/register)

No credit card. No agent. No noise.
