Panther v1.0 – Open Source, Cloud-Native SIEM

In plain words

Panther is an open-source, cloud-native SIEM that teams can use as an alternative to traditional security information and event management systems like Splunk. The software receives security logs, establishes baselines, and detects threats at scale using serverless infrastructure. Built with Golang and React/TypeScript on the backend and frontend, Panther is self-hosted and uses Python for flexible detections. It's designed to enable small security teams to perform threat detection efficiently without the complexity of legacy SIEM platforms.

written from the facts on this page · September 2026

From the sources

In the maker’s words, at launch

Hey HN, My name is Jack Naglieri. I’m the founder of Panther Labs - an SF-based cybersecurity startup. Prior to Panther, I was an engineering manager at Airbnb. Before that a security engineer/analyst/forensic analyst. Today, I’m excited to announce Panther v1.0, an open source, cloud-native SIEM…

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