EU Sovereignty Score
Non-EU vendorCompliance & GRCHeadquarters: US

Prowler: sovereignty score and 8 European alternatives

Prowler is a cloud security tool that finds, prioritises and helps fix security risks across AWS, Azure, Google Cloud, Kubernetes, Microsoft 365 and other environments. It began as an open-source project in 2016 and is offered as a managed cloud service, a private-cloud deployment, a self-hosted web application with API, and a command-line tool. The command-line tool is published under the Apache 2.0 licence.

The contracting company is ProwlerPro Inc., a Delaware corporation according to the terms of service, so its statutory seat is in the United States. The website names no controlling owner. The website does not state where the managed service stores customer data, and it contains no GDPR statement or data processing agreement. The Private Cloud edition lets customers choose data residency, according to the site. Self-hosted editions keep scan data in the customer's own environment, while the managed service is operated by a US company and therefore falls under US law.

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Sovereignty score
49 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-30
    No hosting in Europe (US)
  • Cryptographic key sovereignty SOV-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-665
    Source code auditable, forkable and self-hostable

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 12, 2026
Headquarters
US (US)Verified by hand
EU adequacy decision
Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model
Vendor-hosted (non-EU)Verified by hand
Data hosting
USVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
NoVendor-stated
Category
Compliance & GRC
Type
Product
Website
prowler.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Prowler

The European alternatives to Prowler come from our knowledge base of over 7,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

47 European Compliance & GRC vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Prowler

Prowler is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Prowler hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

Prowler is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Prowler together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Prowler?

It depends on your use case. Strong EU alternatives to Prowler include 2B Advice PrIME, Actecil and Adherent. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Prowler?

Yes. Open-source EU alternatives to Prowler include CISO Assistant. These keep your data fully under your own control and let you self-host if you want to.

Is Prowler GDPR-compliant and where is the data hosted?

Prowler is headquartered in US and hosts data in US. Its GDPR compliance is limited or unclear. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 12, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Compliance & GRC

Compliance & GRC: Governance, risk management, compliance, privacy management and cookie consent. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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8 European alternatives to Prowler — GDPR-compliant & EU-hosted · EU Sovereignty Score