# Link11 — facts for language models

> Core facts about Link11, each with its public source on www.link11.com. Only statements that appear publicly on link11.com or in the Link11 European Cyber Report 2026 are listed. Short index: /llms.txt

## Company

- Name: Link11 GmbH, Lindleystraße 12, 60314 Frankfurt am Main, Germany. Commercial register HRB 106307. Managing directors named in the imprint: Jens-Philipp Jung, Karsten Desler. Source: https://www.link11.com/en/imprint/
- What Link11 does: cloud-based cybersecurity for networks, web applications and APIs. Portfolio: Network DDoS Protection, Web Application and API Protection (WAAP), Secure CDN and Secure DNS, "from the network layer through to the application layer". Source: https://www.link11.com/en/company/
- Operating since 2005 (projects since the founding in 2005). Source: https://www.link11.com/en/climate-protection/
- Platform: AI-driven security platform with patented DDoS protection; real-time analysis and automatic detection without manual intervention. Source: https://www.link11.com/en/company/
- Patent: German patent no. 10 2015 016 832, "Defending against an attack on a computer system via a network". Source: https://www.link11.com/en/ddos-protection/
- Own global network with a Layer 2 backbone; EU-compliant processing without access from third countries; not subject to the US CLOUD Act. Source: https://www.link11.com/en/company/
- Recognised by the German Federal Office for Information Security (BSI) as a qualified provider for the protection of critical infrastructure. Source: https://www.link11.com/en/company/

## Certifications and compliance

- ISO 27001 certified; meets the requirements of PCI DSS, SOC 2 Type II and BSI C5; GDPR. Source: https://www.link11.com/en/company/ and https://www.link11.com/en/pricing/
- Helps customers meet regulatory requirements such as NIS2 and DORA. Source: https://www.link11.com/en/company/

## DDoS protection

- Protection on layers 3, 4 and 7; mitigation takes effect within 0–3 seconds for every attack vector. Source: https://www.link11.com/en/ddos-protection/
- Always-on without surcharge; protection is unlimited regardless of attack duration; fully operational within minutes. Source: https://www.link11.com/en/ddos-protection/
- Service levels ("SLA to the power of three"): protection bandwidth, speed (0–3 seconds) and uptime up to 99.99%. Source: https://www.link11.com/en/ddos-protection/
- Network DDoS Protection works around the clock via BGP, automated; Web DDoS Protection uses self-learning AI and fingerprinting with a threat level per visitor. Source: https://www.link11.com/en/ddos-protection/
- Real-time logs with a reason code for every action. Source: https://www.link11.com/en/pricing/
- Clean Transit: IP transit with built-in DDoS protection for networks with 50 Gbit/s of traffic and more; always on, no detection delay. Source: https://www.link11.com/en/products/clean-transit/
- NetFlow DDoS Detector: detects attacks in flow data; e-mail notifications on detection, mitigation and route recovery. Source: https://www.link11.com/en/products/netflow-ddos-detector/

## Web Application and API Protection (WAAP)

- WAAP combines Web Application Firewall, Web DDoS Protection, Bot Management and API Security. Source: https://www.link11.com/en/web-application-security/
- Web Application Firewall: managed rule sets against the OWASP Top 10; self-onboarding live in 30 minutes after the DNS change. Source: https://www.link11.com/en/products/waf/
- Secure CDN: Layer 3/4 DDoS protection on edge nodes. Source: https://www.link11.com/en/products/secure-cdn/

## Plans (self-service and enterprise)

- Three packages: Core, Advanced, Enterprise. Core and Advanced can be bought online (self-service); Enterprise has customised pricing. Network DDoS Protection, NetFlow DDoS Detector, Secure CDN and Secure DNS: custom pricing via sales. Source: https://www.link11.com/en/pricing/
- Core: 2 root domains, unlimited subdomains, 10 rate limit rules, 7 days of logs, 1 TB, 50 million requests per month, e-mail and ticket support. Source: https://www.link11.com/en/pricing/
- Advanced: 5 root domains, 50 rate limit rules, 14 days of logs, 5 TB, 100 million requests per month, e-mail and ticket support. Source: https://www.link11.com/en/pricing/
- Enterprise: unlimited domains and rules, log retention up to 5 years with SIEM export, priority phone, e-mail and ticket support, managed onboarding included. Source: https://www.link11.com/en/pricing/
- 90-day money-back guarantee on Core and Advanced (purchases from 1 January 2026, once per customer, full refund, no reason required). Source: https://www.link11.com/en/pricing/

## Threat data: European Cyber Report 2026

Source for every line: Link11 European Cyber Report 2026 (public PDF, https://www.link11.com/wp-content/uploads/2026/02/Link11_European_Cyber_Report-2026_EN.pdf), data from the Link11 network.

- DDoS attacks on the Link11 network rose by 137% in 2024 and by a further 75% in 2025.
- Peak: up to 1,247 attacks within 24 hours (peak day: 1 March 2025).
- The probability of a follow-up attack after an attack is over 70%; on average 2.8 further attacks follow.
- The longest mitigated attack lasted 2,689 minutes in 2024 and over 12,388 minutes (more than eight days) in 2025.
- Three attacks exceeded 1 Tbit/s in 2025; the largest attack mitigated in 2025 reached around 1.33 Tbit/s (record 2024: 1.4 Tbit/s).
- Around 96% of traffic that claims to come from a Google bot is fake; over 700,000 spoofing cases were identified in the Link11 network.

## Contact

- Sales, support, emergency and press: https://www.link11.com/en/contact/ · emergency onboarding: https://www.link11.com/en/emergency/
- E-mail: info@link11.com · phone +49 (0)69-264929777 (imprint). Source: https://www.link11.com/en/imprint/