Uptime Monitoring for GDPR-Compliant Teams

If your company is subject to the GDPR, every tool in your stack that processes personal data needs to be evaluated — including your uptime monitoring provider. Most teams overlook this because monitoring feels like an internal, infrastructure-level concern. But monitoring tools routinely process IP addresses, request headers, and response metadata. Under the GDPR, that is personal data.

What Monitoring Tools Actually Process

When an uptime monitor checks your endpoint, it typically logs:

• IP addresses of the target server (and sometimes of the requester)
• Response headers which may include session tokens, server identifiers, or custom headers
• Timing data that, combined with other information, can be used to fingerprint infrastructure
• Alert metadata including email addresses of team members who receive notifications

Under Articles 4 and 28 of the GDPR, this makes your monitoring provider a data processor. You need a legal basis for the processing, and you need a Data Processing Agreement (DPA) in place.

The Problem with US-Hosted Providers

After the Schrems II ruling in 2020, transferring personal data from the EU to the US requires additional safeguards beyond Standard Contractual Clauses. Many US-hosted monitoring providers technically comply by offering SCCs, but the practical risk remains:

• US surveillance laws (FISA 702, Executive Order 12333) can compel data disclosure without notifying the data subject
• The EU-US Data Privacy Framework (2023) provides a legal basis, but its long-term stability is uncertain — the previous two frameworks were both invalidated by the CJEU

For teams that take data residency seriously, the simplest solution is to keep data in the EU entirely.

What to Look for in a Provider

When evaluating a monitoring tool for GDPR compliance, check:

1. Where is the data stored? Look for EU-based infrastructure. "EU region available" is not the same as "EU only" — some providers replicate data to US regions for redundancy.
2. Is a DPA available? This should be a downloadable document, not something you need to request via email and wait weeks for.
3. Who are the sub-processors? Your DPA is only as strong as the chain of processors behind it. US-based sub-processors reintroduce the same transfer risks.
4. What data is collected? Minimal data collection is both good security practice and good GDPR practice. Your monitoring tool should not need to store more than check results and alert configurations.

Self-Hosting as an Alternative

Self-hosted tools like Uptime Kuma, Gatus, and Cachet keep all data on your own infrastructure, which eliminates the third-party processor question entirely. This is a valid choice for teams with strict data residency requirements.

However, self-hosting introduces its own problems — primarily that your monitoring infrastructure shares failure domains with the thing it monitors. We covered this in detail in Why Your Status Page Cannot Run on the Same Server.

How Upwarden Handles This

Upwarden runs entirely on EU infrastructure (Hetzner, Germany). We do not use US-based sub-processors for core functionality. Our Data Processing Agreement is available on the website — no email required, no sales call needed.

We collect only what is necessary: check results, alert configurations, and account information. No request body logging, no IP address retention beyond what is needed for rate limiting.

Get Started

If you are looking for a GDPR-compliant monitoring solution with EU data residency, create a free Upwarden account and see how it fits your compliance requirements.