Catalyst, the open source security orchestration and incident response platform that turns alerts into tickets, runs your playbooks as automations, and keeps the whole investigation in one place.
Catalyst is a self hosted incident response and security automation platform. Security teams use it to manage the full lifecycle of alerts, incidents, vulnerabilities and threat hunts as structured tickets, each with tasks, a timeline, comments, links and evidence files, so an investigation is documented as it happens rather than reconstructed afterwards. Ticket types carry their own custom fields and schema, so an alert, an incident and a forensics case each capture the information that matters for that kind of work. Reactions are the automation engine: a trigger such as a webhook or a collection hook fires an action such as a Python script or an outbound HTTP call, so repetitive triage and enrichment run without a human in the loop and analysts spend their time on the decisions that need judgement. A dashboard summarises the current picture at a glance.
It suits security operations and incident response teams that want a single owned system for alert handling, case management and playbook automation, running inside their own cloud account rather than a shared multi tenant service.
Catalyst is exposed through a web console, so what matters is that no two deployments share a login and nothing is baked into the image, and cloudimg ships it exactly that way. The pinned Catalyst release runs as a single service under systemd behind an nginx reverse proxy, and on first boot a service creates the whole database fresh, generates the platform secrets at random, and creates one administrator account with a unique password written to a root only file, so a default login never survives into the image. The embedded database and file store live on the instance and listen only on loopback, the only remote surface is the console on port 80 and SSH with your own key, and the image is scanned clean of fixable vulnerabilities before it is sealed. Every deployment comes with a paired deploy guide and 24/7 cloudimg support.
Real screenshots taken while testing this image against its deployment guide.