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Link11

European Leader in IT Security and Cyber Resilience

ProtectAutomate/AI: built in

Founded 2005 · Frankfurt, Germany · 201-1,000 employees · Private, VC/PE backed

Partnership Overview

Who Link11 is built for

European enterprises, banks, government agencies, and telecom carriers requiring GDPR-resident DDoS and WAAP protection; North American customers seeking a non-hyperscaler alternative.

Link11 is a German-headquartered cybersecurity provider specializing in DDoS protection, web application & API security (WAAP), bot management, and zero-touch WAF, with a sovereign European cloud footprint. Following the 2024 merger with DOSarrest, Link11 expanded into North America and now positions itself as a European alternative to Cloudflare, Akamai, and Imperva, with strong GDPR data sovereignty and BSI/C5-aligned security. Targets enterprises and public sector buyers requiring EU-resident DDoS and WAAP services.

  • VerifiedSep 16, 2026 · high confidence
  • 5solutions across 1 category
  • 21 yrsin business, since 2005
  • 201-1,000employees

Why teams pick Link11

  • European-headquartered sovereign cloud (GDPR data residency)
  • ISO 27001 + BSI / C5 alignment
  • Sub-10-second DDoS mitigation SLA
  • Strong DACH financial services and public sector references
  • DOSarrest acquisition added North American scrubbing and customer base
  • Less vendor concentration risk vs. US hyperscalers

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Recognition & proof points

  • Frost & Sullivan Best in Class AwardsAnalyst recognition · Frost & Sullivan
  • BSI C5 attestationProof point
  • Multiple Cybersecurity Excellence AwardsAward

Notable clients

Vendor-reported
  • Major European banks
  • German government agencies
  • EU stock exchanges
  • large e-commerce platforms

Our Solutions

Rubber Duck solutions through Link11

From first evaluation to day-to-day operations, Rubber Duck Technology helps you get full value from Link11's Cybersecurity & Compliance solutions. We fit them to the systems you already run, remove overlap, and give you a clear view of how they perform, so your team can move faster with fewer surprises.

Protect

Cybersecurity & Compliance

DDoS Protection

Link11 provides always-on and on-demand DDoS protection from a sovereign European cloud, including anti-DDoS for DNS, with mitigation handled at multi-Tbps scale across its scrubbing centers.

  • Sub-10-second mitigation Backed by a sub-10-second DDoS mitigation SLA.
  • EU sovereign cloud Runs on a European sovereign cloud with GDPR data residency.
  • North American scrubbing The 2024 DOSarrest acquisition added North American scrubbing capacity.
SplunkMicrosoft Sentinel

Bot / Fraud Protection

Link11 delivers bot management and web application & API protection (WAAP) using AI-based bot detection and ML-driven attack classification to filter malicious automated traffic.

  • AI-based detection Uses AI-based bot detection and ML-driven attack classification.
  • Sovereign data residency Processes traffic within an EU sovereign cloud for GDPR compliance.
REST APIs

Brand / Digital Risk Protection

Link11 protects customer-facing web applications, APIs, and DNS from attack and abuse, helping enterprises and public sector organizations preserve availability and brand trust.

  • Public sector references Strong DACH financial services and public sector references.
  • ISO 27001 / C5 Aligned to ISO 27001 and BSI/C5 security standards.
DNS providers

Threat Hunting / Intelligence (within MDR)

Link11's Security Operations Center applies ML-driven attack classification and continuous analysis to identify and respond to evolving DDoS and application-layer threats.

  • ML-driven classification Classifies attacks with machine learning for faster response.
  • Always-on mitigation Continuous, always-on protection backed by the SOC.
SplunkMicrosoft Sentinel

Zero Trust Network Access (ZTNA)

Link11 offers Zero Trust Secure Access (ZTNA) to control and secure access to applications, complementing its WAAP and DDoS portfolio within a sovereign European footprint.

  • European alternative Positioned as an EU-resident alternative to US hyperscalers, reducing vendor concentration risk.
  • GDPR data sovereignty Keeps access and security data within EU residency boundaries.

How Link11 delivers

24/7 MonitoringImplementation & OnboardingManaged Security ServicesSecurity Operations Center (SOC)Threat Hunting / Intelligence

24/7 SOC; sub-10-second mitigation SLA; named CSMs for enterprise; multilingual support. (vendor-reported)

Services in detail

  • Managed Security ServicesDelivered as a SaaS subscription with custom enterprise options and channel/MSSP delivery.
  • Security Operations Center (SOC)Delivered as a fully managed 24/7 SOC service.
  • 24/7 MonitoringDelivered as always-on, 24/7 monitoring from the SOC.
  • Threat Hunting / IntelligenceDelivered as an analyst-led capability within the managed SOC.
  • Implementation & OnboardingDelivered as guided onboarding with REST API and SIEM/DNS integration support.

Automate/AI, built in · AI-Powered Features. ML-driven attack classification, anomaly detection, and bot fingerprinting in WAAP; AI-based traffic analysis in scrubbing centers.

Compare

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We'd price Link11 next to these. Same scope on one page, sent to every provider, so the numbers actually line up.

Who we'd price next to Link11

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Case Studies

What backs it up

Case studies

No published case studies yet.

Ask us and we'll request a reference call with Link11.

Ask for a reference

Documents

From Link11

1 PDF, collected while we vetted them

  • Link11 DDoS Protection FlyerPDF · 1.4 MBDownload

Profile compiled by Rubber Duck Technology from primary sources and partner collateral. Vendor-reported figures are labeled as theirs. Spot something wrong? Tell us.

Technology that doesn't sink under pressure

Talk it through before you sign.

Send us what you run today. We'll price Link11 against two alternatives and tell you which one we'd pick, and why.