Prowler and CSPM on AWS
Continuous posture assessment with the open-source scanner — setup, scoring, and turning findings into a plan.
These four lessons cover Prowler from install to what to do with the output. Start with the 2026 setup for CLI and Prowler Cloud, which skips the dead ends in older tutorials written before Prowler 5's unified multi-cloud platform. ThreatScore, introduced in Prowler 5.6, is the risk-weighted score that replaces "count the red checks" with something closer to actual exposure.
The real work starts after the scan. Triaging 500 findings into an executable plan is the step most tutorials skip — a scan is a result, not a plan. And because Prowler isn't the only posture tool in an AWS account, Prowler vs Security Hub vs Config conformance packs settles which one to use for which job, specifically when the goal is CPS 234 audit evidence rather than just a dashboard.
Read in the order above — setup, scoring, triage, then positioning against the other AWS-native tools — and you go from a first scan to a defensible plan without the dead ends the older tutorials leave in.
Lessons
- Prowler 5 Full Setup in 2026 (CLI + Prowler Cloud)Most Prowler tutorials predate version 5 and some are actively broken. Here's a clean 2026 setup for both the CLI and Prowler Cloud — without the dead ends.
- Prowler ThreatScore Explained: Risk-Weighted Cloud Security ScoringThreatScore is Prowler's answer to the 'every finding looks equally urgent' problem. It scores your environment across four areas weighted by real risk — here's how to read it.
- From 500 Prowler Findings to a Plan You Can Actually ExecuteEvery Prowler tutorial shows you how to run a scan. Almost none show you what to do with the 500 findings it returns. Here's the triage method that turns a wall of red into a Monday-morning plan.
- Prowler vs Security Hub vs Config Conformance Packs for CPS 234 EvidenceThree AWS-native-ish ways to check your security posture, and teams waste money running all three badly. Here's which one to use for what — especially when the goal is CPS 234 audit evidence.
Common questions
- Is Prowler free?
- The CLI is open source and free. Prowler Cloud is a hosted product with a free tier.