Available now · Windows 10 & 11

See what AI is doing
on your machine.

Your apps are connecting to Anthropic, OpenAI, Google, and more — right now, in the background. Nocturn shows you exactly which processes, where they're sending data, and lets you block anything that shouldn't be there.

£29 one-time · no subscription

Installs in under a minute. Lives in your system tray. Never phones home.

Nocturn by Swordwright
All clear
AI Watch
Scan
Alerts
Quarantine
Settings
14
AI Processes
2 tools, all trusted
4
LLM Connections
0 unauthorized
0
Need Attention
nothing flagged
19/19
DNS Resolved
hosts fresh
Anthropic
Trusted · Anthropic, PBC
4
connections · claude.exe
Monitoring
no attributable ancestor
0
connections · pythonw.exe
See it running

Sixty seconds, real machine, real traffic.

A quick walkthrough of Nocturn catching an unrecognised AI connection and shutting it down — no script, no staged demo.

1

Open AI Watch

Every AI process and LLM connection on the machine, live — the same table shown in the app card above.

2

Something new shows up

A process nobody recognises starts talking to an LLM endpoint. Nocturn flags it in amber the moment it appears.

3

One click, it's gone

Block cuts its network access; Kill ends the process outright. No digging through Task Manager.

4

Back to quiet

Trusted tools stay silent in the background. Nocturn only interrupts you for what's actually new.

What's inside

Every tool you need to stay in control.

Nocturn runs quietly in your tray and only speaks up when something needs your attention.

👁

AI Watch

A live process table showing every AI tool, agent, and script running on your machine — and every outbound LLM connection it's making. Trust what you know; flag everything else.

🔪

Block & Kill

One click cuts a process's network access or terminates it entirely. Auto-kill mode handles anything unauthorized automatically — with a safety guard that prevents it fighting a respawn loop.

📋

Clipboard Guard

Clipboard-hijacking malware swaps sensitive copied data between copy and paste without you noticing — most commonly a crypto wallet address. Nocturn detects the swap instantly and offers to restore what you actually copied. Covers BTC, ETH, XRP, LTC, DOGE and more.

🔍

File Scanner + Vault

Quick, full, and targeted scans with multi-layer detection. Suspicious files go into an encrypted quarantine vault — locked away but recoverable if it turns out to be a false positive.

🧰

System Apps

Every installed utility and Windows control-panel applet — Task Manager, Disk Management, Device Manager and the rest — in one searchable, categorised grid. One click to launch, no digging through Start Menu mid-investigation.

💽

Drive Control

Take any non-system drive offline with one click, enforced by Windows itself — instantly stops all I/O to it. Your system and boot disks are protected and can't be toggled by accident. Perfect for isolating backups or personal data before you run something you don't fully trust yet.

Privacy note: Nocturn's detection is entirely passive — it reads the process list and connection list from Windows. It does not read the contents of your AI conversations, decrypt any traffic, or send anything to our servers. The app itself never phones home.
A workflow worth knowing

Two layers of protection, not one.

Here's how a lot of Nocturn users combine AI Watch with the Drives tab before testing anything they don't fully trust yet — a new agent, an untrusted script, a model they just downloaded. See more real-world scenarios on the Use Cases page.

1

Before you hit run

Open the Drives tab and take your backup or personal-data drive offline — one click, enforced by Windows itself. Nothing running on the machine can read, write, or even see that drive until you bring it back online. No exceptions, no bypass.

2

If something shows up

AI Watch flags any unrecognised AI process or LLM connection the moment it appears. Kill it on the spot — and even if it had slipped past for a few seconds, the drive holding your real files was never reachable in the first place.

AI Watch is the early warning. Drive Control is the wall behind it.

Getting started

From install to in control in five minutes.

1

Install & activate

Run the installer, paste your licence key from your purchase email, and click Activate. Nocturn starts with Windows and lives in your tray.

2

Review what's active

Open AI Watch. You'll see every AI process and connection on your machine. Anything you recognise — allowlist it, or trust the whole publisher.

3

Allow what you trust, block the rest

Once your known tools are trusted, anything new stands out immediately. Block with one click. Get on with your day.

Read the full guide →
Founding Member
£29
One-time purchase
  • AI Watch — live feed of every AI process and LLM connection
  • Block & Kill — cut connections, terminate rogue processes
  • Clipboard Guard — real-time protection against clipboard hijacking
  • File Scanner + Vault — multi-layer scan with encrypted quarantine
  • System tray app · autostart · light & dark theme
  • One purchase. Yours for life on the V1 line.
See pricing & buy →

Full details, requirements recap, and checkout on the buy page. Windows 10 & 11 · 64-bit only.

Requirements

What you need to run Nocturn.

Operating System
Windows 10 (1809+) or Windows 11
Architecture
64-bit (x64) only
Disk space
~60 MB installed
RAM
~40 MB typical usage
Privileges
Standard user · no kernel driver
Internet
Activation only · app never phones home
Questions

Common questions.

Does Nocturn slow down my PC?

No. Nocturn reads the process and connection lists Windows already maintains — it doesn't add its own scanning loop. Typical CPU usage is under 0.1%, RAM around 40 MB. It's designed to be quieter than a browser tab.

Do I still need my antivirus?

Yes — Nocturn is a complement to Windows Defender (or your existing antivirus), not a replacement. It adds AI-awareness and clipboard protection Defender doesn't have.

Can Nocturn read my AI conversations?

No. Nocturn monitors which processes are running and which network connections they make — the same information Windows Task Manager shows you. It does not intercept, decrypt, or log the content of any traffic.

See the full FAQ →