EU-hosted, non-EU parentCybersecurityHeadquarters: DE

Hornetsecurity: sovereignty score and 8 European alternatives

Hornetsecurity is a cloud security provider for Microsoft 365 environments. Its flagship, 365 Total Protection, bundles email security, backup, compliance functions and security awareness training. There are also standalone services such as email encryption, archiving, continuity, DMARC management, permission management and backup for virtual and physical servers. Through a multi-tenant control panel it targets mainly managed service providers and small and medium-sized businesses. The services are delivered as a cloud service.

Hornetsecurity is based in Hanover, Germany. In December 2025 Proofpoint, a US company, completed its acquisition, and Hornetsecurity has since operated as a dedicated business unit of Proofpoint. The ultimate parent is therefore in the United States, which is a CLOUD Act signal. The company publishes a position on the US CLOUD Act and states that it stores customer data in its own regional data centres; the sources consulted do not name locations. The software is proprietary and not open source.

See the 8 European alternatives ↓Assess your stack with Hornetsecurity pre-selected

Mastodon LinkedIn Bluesky X Email

Sovereignty score

71 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-3100
EU-only hosting
Cryptographic key sovereignty SOV-360
Key management with a European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-655
Closed source, runtime with the vendor

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 4, 2026

Headquarters	DE (EU)Verified by hand
Ultimate parent company	USVerified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	EUVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Hosting signal	CLOUDFLARENET - Cloudflare, Inc., US (US)Technically measured
Category	Cybersecurity
Type	Product
Website	hornetsecurity.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Hornetsecurity

The European alternatives to Hornetsecurity come from our knowledge base of over 6,800 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

93 European Cybersecurity vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is Hornetsecurity one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with Hornetsecurity

Hornetsecurity is headquartered in DE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data. The ultimate owner is based in US. Foreign control undermines part of the certainty a European headquarters offers.

Data is hosted exclusively in the EU, so Hornetsecurity scores best on data residency.

Hornetsecurity is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Hornetsecurity 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 Hornetsecurity?

It depends on your use case. Strong EU alternatives to Hornetsecurity include Actalis, Advenica and Avira. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Hornetsecurity?

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

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

Hornetsecurity is headquartered in DE (EU) and hosts data in EU. That makes Hornetsecurity an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

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 4, 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

Cyber Resilience Act

Public signals that relate to the EU Cyber Resilience Act. They do not count towards the score. A missing line means "not found publicly".

Report a vulnerability: hornetsecurity.com/en/vulnerability-disclosure/
security.txt: hornetsecurity.com/.well-known/security.txt

For products in scope of the CRA, CE marking is required from 11 December 2027; this cannot be checked yet.

Checked on October 9, 2026. What is the Cyber Resilience Act?

Digital sovereignty in Cybersecurity

Cybersecurity: Threat detection, endpoint protection, SIEM, vulnerability management. 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.

Also in this category

See all →

Open in the alternatives dashboard Missing a vendor? Submit it Are you this vendor? You can also become a sponsor on the Cybersecurity page — with no effect on your score