my-arsenal-of-aws-security-tools for mapping the open source AWS security landscape

A curated, category-driven catalog of open source tools covering AWS defensive hardening, offensive testing, continuous auditing, and DFIR, maintained as a navigational reference for cloud security professionals.

Tool	toniblyx/my-arsenal-of-aws-security-tools — curated list of open source tools for AWS security across defensive, offensive, auditing, and DFIR domains
Category	Cloud security tool catalog / awesome-list (Shell, Apache-2.0)
Primary Use	Discovering and selecting open source tooling for AWS security assessments, hardening reviews, compliance audits, and incident response preparation
Safe Use	Reference resource for authorized cloud security assessments, internal hardening programs, and defensive research on environments you own or are contracted to test
Telemetry Note	Purely a documentation list — no runtime footprint itself; the tools it indexes vary, and many emit readable CloudTrail events when used against monitored accounts

Some repositories are tools, and some repositories are maps. toniblyx/my-arsenal-of-aws-security-tools, sitting at roughly 9,500 stars under an Apache-2.0 license, is firmly the latter: a curated index of open source tooling for AWS security, organized by the operational phase a practitioner happens to be in. Where most awesome-lists flatten their subject into an alphabetical soup, this one is sliced along the actual lifecycle of cloud security work — defensive hardening, offensive assessment, purple teaming, continuous auditing, DFIR, development security, and S3-specific auditing. That taxonomy is the real product here, because it converts an overwhelming ecosystem into a decision aid.

The structure of the README tells you a lot about how the maintainer expects it to be consumed. Each category is a markdown table with four columns: name, description, a popularity badge (live star counts via badgen.net), and a metadata column aggregating contributor counts, watchers, last-commit date, and open versus closed issues. This is a quiet but meaningful design choice — instead of editorializing about which tools are best, the list surfaces freshness and community health signals inline, letting a reader immediately distinguish a maintained project from one that has been dormant for two years. For a field where AWS APIs deprecate aggressively and tools rot quickly, that metadata column is arguably the most valuable part of the page.

The defensive section is the largest and anchors the list. The first entry is Prowler, the maintainer's own flagship project, described as covering AWS, Azure, and GCP with best-practice assessments against an extensive framework matrix: CIS, NIST 800, NIST CSF, CISA, FedRAMP, PCI-DSS, GDPR, HIPAA, FFIEC, SOC2, GXP, ENS, and Well-Architected Security. The self-listing is transparent rather than promotional — Prowler genuinely is the de facto standard for CIS benchmark work on AWS — but a professional reader should note the conflict of interest and weight the surrounding entries accordingly. Alongside it sit ScoutSuite from NCC Group for multi-cloud auditing, CloudMapper for environment analysis and visualization, and CloudSploit Scans for NodeJS-based security checks.

The governance angle of the defensive section deserves attention. CloudCustodian is listed not as a scanner but as a rules engine — a YAML DSL for policies that query, filter, and act on cloud resources, spanning security, cost, and compliance. That inclusion signals the list's philosophy: hardening is treated as a continuous policy problem, not a point-in-time report. Similarly pragmatic is CloudTracker from Duo Labs, which attacks the over-privilege problem from the evidence side by comparing actual CloudTrail activity against current IAM policies to find permissions nobody uses — a privilege-minimization workflow that doubles as detection engineering input, since unused-grant baselines feed directly into anomaly alerting.

Cost tooling appears too, which trips up newcomers who expect a purely security-flavored list. ICE from Teevity is included for usage and cost dashboards, and the reasoning becomes obvious once you have done incident response on a compromised cloud account: unexpected spend is frequently the first indicator of cryptomining or resource abuse. Treating AWS cost telemetry as a security signal is orthodox cloud DFIR thinking, and the list quietly encodes that lesson through its inclusions.

Several entries come from aws-samples and awslabs, giving the defensive section vendor grounding. The AWS Network Access Analyzer multi-account automation identifies Internet Gateway reachability for resources across an entire AWS organization — essentially automated exposure mapping at scale, which is exactly the question an auditor asks first: what can the internet actually touch? AWS Security Benchmarks complements it with scripts and templates aligned to the CIS Foundation framework. The presence of first-party AWS automation alongside community tools gives the catalog a useful balance between supported code and independent scrutiny.

The table of contents also promises offensive, purple teaming/adversary emulation, continuous auditing, DFIR, development security, S3 auditing, and training sections, plus a catch-all for interesting code. Although the visible excerpt cuts off mid-table, the taxonomy itself is instructive: separating offensive tooling from purple teaming acknowledges that emulation frameworks (which reproduce documented adversary behavior for detection validation) serve a different authorized purpose than general offensive utilities. Development security getting its own section reflects the shift-left reality that IAM flaws and leaked secrets increasingly originate in CI/CD pipelines rather than console misconfigurations.

The S3-specific section is a pragmatic concession to how AWS incidents actually cluster. Object storage misconfiguration — public buckets, misapplied bucket policies, exposed ACLs — has produced enough breaches that a dedicated tooling category is warranted rather than burying those tools inside generic auditing. For an assessor scoping an engagement, jumping straight to the S3 table is faster than filtering a hundred-entry general list, and the list's structure optimizes for exactly that workflow.

There are maintenance signals worth reading closely. The contribution policy is minimal but firm: send a PR, and the tool must be open source — a filter that keeps commercial vendor links out and preserves the list's character as a free-tooling index. The badge-driven metadata means the freshness data updates dynamically even when the prose does not, which partially insulates the catalog from the staleness that kills most curated lists. That said, any static index lags the ecosystem, and a professional should treat it as a starting map, verifying that a chosen tool still supports current AWS API versions before building an assessment methodology on it.

For defenders, this catalog has a second, less obvious use: threat-informed tooling awareness. Knowing which open source utilities exist for AWS enumeration, auditing, and IAM analysis tells a blue team what an external assessor — or an intruder with an obtained credential — can run against their environment. Many of the listed tools authenticate through standard AWS APIs and leave clean, attributable events in CloudTrail, so catalog awareness translates directly into detection coverage planning: if a tool exists, assume it can be run against your accounts and write the corresponding detections.

As a piece of curation, my-arsenal-of-aws-security-tools earns its stars by doing one thing well: ordering a sprawling ecosystem along the axis practitioners actually think in. It is not a tool you install; it is the pre-engagement stop that tells you which tools to install. In an authorized assessment, a lab build-out, or a greenfield cloud security program, that map function — backed by live popularity and maintenance badges rather than marketing prose — is genuinely hard to replace, and it explains why the repository remains a default reference in the cloud security community.

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Educational analysis for authorized security professionals. Use only in controlled, authorized environments.