Autonomous Server Defense.
Local detection, instant blocking, and an optional global threat mesh. No raw logs leave your servers — ever
Too many logs, not enough signal
You drown in noise without getting real-time protection.
Slow detection
Threats are found minutes or hours later, instead of at the moment of attack
The problem
Expensive infrastructure
Sending, storing, and indexing logs costs far more than the value returned.
Privacy & compliance friction
Shipping logs off-host increases attack surface and regulatory risk.
The Cephalog Solution
Cephalog turns every server into an autonomous defender. No central log index. No SIEM. No heavy agents.
Local-first detection
Each Tentacl runner analyzes logs on the host and blocks hostile behavior instantly.
Distilled intelligence, not raw logs:
Cephalog shares only attacker fingerprints and threat indicators — never your logs or user data.
Fleet-wide protection
When one server identifies a threat, the rest of your fleet can defend against it.
Tiny footprint, fast deployment
One binary. No storage. No indexing. Installs in minutes
logs stay on your server.
No noisy alert fatigue
No slow batch workflows
No privacy risk
No vendor lock-in
Simple Deployment with peace of mind
Getting started with Cephalog will take minutes, not days:
Frequently asked questions
All the information you need.
We’re Launching Soon!
Join the early access program to help shape a new class of server defense — local-first, privacy-first, and globally intelligent.
We prioritize teams running real production workloads, researchers, and early adopters who want to strengthen their fleets without the weight of a SIEM