EU CDN & WAF Comparison 2026: Cloudflare vs Fastly vs Akamai vs Imperva — CLOUD Act Risk Matrix

Post #5 (Finale) in the sota.io EU CDN & WAF Security Series

Over the past four posts in this series, we've analysed each major CDN and WAF provider in depth: Cloudflare (Delaware, CLOUD Act 20/25), Fastly (Delaware, CLOUD Act 16/25), Akamai (Delaware, CLOUD Act 19/25), and Imperva (Delaware/Thales, CLOUD Act 14/25). Every single one is a US entity subject to the CLOUD Act (18 U.S.C. §2713) — meaning US authorities can compel disclosure of data stored or processed anywhere in the world, including your EU users' CDN access logs, WAF inspection results, and bot-management profiles.

This finale pulls together the complete comparison, maps each provider's specific risk profile, and gives you a decision framework for selecting the right EU-native alternative for your use case.

The CLOUD Act Problem for CDN and WAF Traffic

Before comparing providers, it's worth understanding why CDN and WAF traffic is particularly sensitive under the CLOUD Act.

CDN edge logs are personal data under GDPR Art.4. Every request that passes through a CDN edge node generates a log entry containing: IP address (GDPR Art.4(1) personal data per CJEU C-582/14), User-Agent string, request URI, referrer, and timing. When those logs sit on infrastructure operated by a US entity, they are accessible to US law enforcement under the CLOUD Act without a mutual legal assistance treaty (MLAT) and without notifying the data subject.

WAF inspection creates Art.22 automated decision-making exposure. A WAF that blocks or rate-limits a request based on behavioural scoring is making an automated decision with a legal or similarly significant effect on the data subject (Art.22(1)). If that WAF is operated by a US entity, the profiling data underlying that decision is CLOUD Act-accessible. GDPR Recital 71 requires that automated profiling be explainable and challengeable — but you cannot provide that explanation if the profiling model is opaque and the underlying data is subject to a foreign intelligence authority's compelled disclosure order.

Bot management creates cross-site tracking profiles. Cloudflare Bot Management, Akamai Bot Manager, Fastly Signal Sciences, and Imperva Advanced Bot Protection all build cross-site reputation profiles linking device fingerprints, IP histories, and behavioural patterns across multiple clients. These profiles are created and held by a US entity, and the individual users they describe have no effective right to access, rectification, or erasure under GDPR Art.15–17 because the data controller is a foreign entity not meaningfully subject to EU enforcement.

CLOUD Act Risk Matrix

Scoring Dimensions (5 each, 25 max)

The CLOUD Act score reflects five dimensions: (1) US parent jurisdiction, (2) US government contracts (DoD/DHS/IC), (3) FedRAMP/FISMA authorisation level, (4) PRISM/UPSTREAM program participation, and (5) volume of EU personal data processed under US operational control.

Cloudflare: 20/25 — Highest aggregate risk. Cloudflare handles approximately 20% of global HTTP traffic. Despite strong privacy marketing, the company is a Delaware corporation with a San Francisco control plane. US authorities can issue National Security Letters (NSLs) and FISA §702 orders compelling disclosure. Cloudflare's Transparency Report confirms regular receipt of government requests. Bot Management and WAF Firewall Rules create detailed behavioural profiles of EU users stored on US infrastructure.

Akamai: 19/25 — Second highest, but highest government exposure. Akamai holds FedRAMP High and Moderate authorisations, operates Akamai Government Services LLC (separate entity for DoD/DHS/IC contracts), and routes approximately 30% of global internet traffic through its ~4,000 PoPs. The separate government services entity does not insulate commercial customers from CLOUD Act exposure — the parent entity remains subject to US jurisdiction. Prolexic DDoS scrubbing is particularly sensitive: all EU traffic is routed through Akamai infrastructure during an attack, giving US authorities access to the complete request stream.

Fastly: 16/25 — Lower government profile but significant WAF risk. Fastly acquired Signal Sciences in 2020, adding behavioural WAF and bot intelligence capabilities. Signal Sciences' Next-Gen WAF builds application-layer attack profiles that include request payloads, user session data, and attack pattern fingerprints. This data is retained on US-controlled infrastructure. Fastly's CDN PoPs in Europe are operated under US corporate control, so edge logs are CLOUD Act-accessible regardless of physical location.

Imperva: 14/25 — Lowest score, but with a critical caveat. Imperva is owned by French Thales Group, which creates a perception of EU alignment. However, Imperva Inc. remains a Delaware corporation operating under its own US legal entity. The French parent ownership does not exempt the US subsidiary from CLOUD Act obligations. Imperva's CloudView database activity monitoring and DDoS scrubbing infrastructure are operated by the US entity. The "French parent paradox" is a compliance risk: legal departments that accept Imperva on the basis of Thales ownership are accepting a transfer risk that US courts have not recognised as a valid CLOUD Act exemption.

Use-Case Decision Framework

Use Case 1: Pure CDN (Static Assets, Media Delivery)

Risk: Edge logs = IP addresses = personal data. Every cache hit is logged. CLOUD Act-accessible under NSL or FISA order.

EU-native recommendation: BunnyNet (Bunny.net d.o.o., Slovenia) — CLOUD Act 0/25. EU corporate entity, no US parent, no US government contracts. Pull Zone pricing starts at €0.01/GB for EU traffic. BunnyNet CDN is approximately 17× cheaper than Cloudflare's paid plans for high-volume EU delivery. SLA 99.99%. Bunny DNS included. No personal data leaves EU jurisdiction for EU-region traffic.

Secondary: CDN77 (DataPacket s.r.o., Czech Republic) — CLOUD Act 1/25. Czech entity with one minor US PoP (hence 1/25). If you require zero US PoPs, BunnyNet is the cleaner choice.

Use Case 2: WAF Only (Web Application Firewall, No CDN)

Risk: WAF request inspection = Art.22 automated decision-making. Request payloads, user sessions, attack patterns retained by US entity.

EU-native recommendation: Myra Security (Myra Security GmbH, Munich) — CLOUD Act 0/25. BSI-certified (BSI C5) WAF and DDoS protection. German entity, no US parent. Myra holds BSI IT-Grundschutz certification, making it compliant with both NIS2 and DORA Art.28 supply chain requirements. Pricing on request (enterprise). Available as SaaS WAF or dedicated appliance.

Secondary (self-hosted): Coraza WAF (Apache Software Foundation) — CLOUD Act 0/25. Open-source, OWASP CRS-compatible, Caddy/Nginx/Envoy integration. Zero data leaves your infrastructure. Recommended for teams with DevSecOps capability.

Use Case 3: CDN + WAF Combined

Risk: Both CDN edge log and WAF inspection risks apply. Cross-site bot profiling adds Art.22 exposure.

EU-native recommendation: Gcore (Gcore S.A., Luxembourg) — CLOUD Act 1/25. Gcore offers integrated CDN + WAF + DDoS protection with 180+ PoPs globally. Luxembourg corporate entity, no US parent. The 1/25 score reflects a single US PoP — which can be excluded via origin shield configuration. Gcore's Edge Security product includes DDoS scrubbing, bot detection, and WAF with GDPR Art.28 DPA available. Enterprise pricing with SLA.

Use Case 4: WAF + Bot Protection + DDoS (Enterprise)

Risk: All three risk surfaces active simultaneously. Bot management creates the most extensive GDPR Art.22 profiling exposure.

EU-native recommendation: Myra Security — BSI C5 certified, provides WAF + bot management + DDoS scrubbing as an integrated stack. The only EU-native provider with BSI certification for all three capabilities. For financial services subject to DORA Art.28, Myra is currently the only non-US alternative with the required certifications.

Secondary: Rohde & Schwarz Cybersecurity (R&S Cybersecurity GmbH, Munich) — CLOUD Act 0/25. Provides Web Application Firewall (WAF) and DDoS protection with BSI IT-Grundschutz. Primarily serves critical infrastructure and government. Less documentation available publicly; contact sales for enterprise integrations.

GDPR Article-by-Article Compliance Summary

Art.4 — Personal Data in CDN Logs

CDN access logs contain IP addresses, which the CJEU (C-582/14, Breyer) confirmed are personal data when the operator can reasonably link them to a natural person. All four US providers collect these logs. EU-native CDN providers (BunnyNet, CDN77, Gcore) collect the same logs, but as EU corporate entities they are fully subject to GDPR enforcement by EU supervisory authorities, and US authorities cannot compel disclosure without an MLAT proceeding (which requires judicial review in both jurisdictions).

Art.22 — Automated Decision-Making

WAF block decisions and bot score-based rate limiting are automated decisions with a legal or similarly significant effect on data subjects (blocking a transaction, throttling a legitimate user). Recital 71 requires that such processing be "subject to suitable safeguards, which should include specific information to the data subject and the right to obtain human intervention." Controllers using US-based WAFs that block EU users must: (a) document the logic basis per Art.13(2)(f); (b) provide a means for data subjects to request human review; (c) assess whether the processing is lawful under Art.6(1)(f) legitimate interests.

Art.25 — Privacy by Design

Sending EU user traffic through a US-operated CDN or WAF by default is not consistent with Art.25's requirement to implement appropriate technical measures to integrate data protection principles into processing. Controllers should configure routing rules to keep EU user traffic on EU-jurisdiction infrastructure where technically feasible.

Art.28 — Data Processor Agreement

All four providers offer DPAs. However, a DPA alone does not resolve the CLOUD Act conflict. Under 18 U.S.C. §2713, a DPA clause prohibiting disclosure to US authorities is unenforceable against a lawful US government order. The Court of Justice of the EU confirmed in Schrems II (C-311/18) that contractual safeguards are insufficient when the legal system of the recipient country does not provide equivalent protection — which the US does not for CLOUD Act requests outside the EU-US Data Privacy Framework (DPF).

Art.44/46 — International Transfers

Routing EU user requests through US CDN PoPs constitutes a transfer of personal data (IP address, request content) to a third country. Transfers to the US require either: (a) DPF adequacy decision (limited to DPF-certified transfers, does not cover national security access), (b) Standard Contractual Clauses (SCCs) with a Transfer Impact Assessment (TIA), or (c) derogations under Art.49 (which do not apply to systematic CDN operation). The Schrems II TIA requirement means you must assess whether US FISA §702 or the CLOUD Act creates transfer risk — for the four providers covered in this series, the answer is yes for all four.

EU-Native Provider Summary Table

Migration Guidance

From Cloudflare to BunnyNet + Coraza

Timeline: 2 weeks

1. Week 1 — CDN migration: Create BunnyNet Pull Zone pointing to your origin. Update DNS (BunnyNet provides CNAME). Configure cache rules equivalent to your Cloudflare page rules. BunnyNet supports Image Optimization and Stream for media. Validate cache hit rates.

2. Week 2 — WAF migration: Deploy Coraza WAF as a reverse proxy in front of your origin (Nginx, Caddy, or Envoy integration). Enable OWASP Core Rule Set (CRS) v4. Port your Cloudflare WAF custom rules to CRS exceptions or custom Coraza rules. Monitor false-positive rate for 48 hours before enabling block mode.

3. DNS cutover: Lower Cloudflare DNS TTL to 300s 48 hours before cutover. Switch CNAME to BunnyNet. Remove Cloudflare proxy (orange cloud → grey cloud). Validate HTTP 200 on all critical paths. Decommission Cloudflare after 7-day observation period.

GDPR improvement: Eliminates CLOUD Act exposure for CDN edge logs. WAF processing stays on-premise. No cross-site profiling.

From Akamai or Imperva to Myra Security

Timeline: 4 weeks

1. Week 1 — Assessment: Export Akamai/Imperva WAF rule sets, rate-limit configs, and allow/block lists. Document DDoS scrubbing configuration and upstream capacity.

2. Week 2 — Myra onboarding: Myra provides a dedicated onboarding engineer (enterprise contracts). Import rule set, configure DNS failover for DDoS scrubbing activation. Set up BSI C5 audit evidence collection.

3. Weeks 3–4 — Parallel run: Run Myra in monitoring mode alongside existing provider. Compare block/allow decisions for false-positive analysis. Validate DDoS scrubbing capacity in pre-production test.

4. Cutover: Switch DNS to Myra edge. Monitor for 72 hours in active mode. Decommission Akamai/Imperva after 14-day observation.

GDPR improvement: Eliminates CLOUD Act exposure entirely. BSI C5 certification satisfies DORA Art.28 auditable supply chain requirement. EU supervisory authority jurisdiction over data processor.

Cost Comparison

For a typical e-commerce site serving 10 TB/month EU traffic with WAF protection:

BunnyNet delivers comparable CDN performance at approximately 17× lower cost than Cloudflare's Pro plan for high-volume EU traffic, with zero CLOUD Act exposure.

The Series: What We Covered

This five-post series has systematically examined the CDN and WAF market from an EU data sovereignty perspective:

1. Cloudflare CDN & WAF EU Alternative 2026 — How Cloudflare's 20% global traffic share creates massive CLOUD Act exposure. Bot Management cross-site scoring under GDPR Art.22. BunnyNet and Gcore as EU-native replacements.

2. Fastly EU Alternative 2026 — Signal Sciences behavioural WAF and why Fastly's FedRAMP authorisation process increases rather than decreases CLOUD Act risk for EU controllers.

3. Akamai EU Alternative 2026 — Akamai Government Services LLC, FedRAMP High, and how DoD/DHS/IC contracts create the highest government-exposure risk in the series.

4. Imperva EU Alternative 2026 — The Thales Group "French parent paradox" and why Imperva Inc. remains a US-jurisdiction entity despite French ownership.

5. This post — Complete risk matrix, decision framework, migration guides, and cost comparison.

Conclusion

The CDN and WAF market is dominated by four US Delaware corporations, all subject to the CLOUD Act. The combined GDPR risk — Art.4 CDN log transfers, Art.22 WAF profiling, Art.28 DPA enforceability gaps, Art.44/46 transfer mechanisms — creates systematic compliance exposure for EU controllers routing their users' traffic through US-operated infrastructure.

The good news: EU-native alternatives exist for every use case.

• CDN only: BunnyNet (Slovenia, 0/25) is production-ready, 17× cheaper, and globally distributed.
• WAF only: Myra Security (Germany, 0/25, BSI C5) or Coraza self-hosted.
• CDN + WAF: Gcore (Luxembourg, 1/25) covers the integrated stack.
• Enterprise WAF + Bot + DDoS: Myra Security is the only BSI-certified option.

For teams building on EU-native infrastructure from day one, sota.io provides GDPR-native managed hosting on Hetzner Germany with no US parent, no CLOUD Act exposure, and no data ever leaving EU jurisdiction — a clean foundation before you even need to decide on a CDN provider.

This post concludes the sota.io EU CDN & WAF Series. Related series: EU Cloud Database Comparison, EU Kubernetes Managed Services, EU Serverless PaaS Comparison.