European cybersecurity. Since 2005.
Attacks don’t take breaks. Neither does your protection. Link11 delivers transparent, European-developed security that’s always one step ahead. So you can focus on what matters most: your business.
From Frankfurt, protecting digital business worldwide.
Europe-based, operating worldwide.
- Own SOC, 24/7
- BSI-qualified DDoS provider
- ISO 27001, SOC 2 Type II, BSI C5
ISO 27001
SOC 2 Type II
BSI C5
Link11 is a leading manufacturer of cloud-based cybersecurity solutions, headquartered in Germany with locations across Europe, North America and the Middle East. Since 2005, the company has pursued one clear goal: to make the internet a safer place and to keep businesses and organizations around the world reliably online.
Link11 strengthens the cyber resilience of networks and critical applications in regulated and critical sectors such as finance, logistics and healthcare. Its product portfolio comprises Network DDoS Protection, Web Application & API Protection (WAAP), Secure CDN and Secure DNS, ensuring the availability and performance of digital services from the network layer through to the application layer.
The AI-driven security platform with patented DDoS protection analyzes incoming traffic in real time, automatically detects attack patterns and continuously adapts to new threats, with no manual intervention required. At the same time, security teams retain full control: whitelists, blacklists and security-relevant configurations can be managed centrally through a clear, intuitive interface.
Link11 is ISO 27001 certified, meets the requirements of PCI DSS, SOC 2 Type II and BSI C5, and is recognized by the German Federal Office for Information Security (BSI) as a qualified provider for the protection of critical infrastructure. This also helps Link11 customers meet regulatory requirements such as NIS2 and DORA.
- 24/7 SupportSecurity threats don’t wait for business hours, and neither do we. Our specialists are available around the clock to help you when needed.
- GDPR-compliantLink11’s European location ensures your content remains compliant with strict GDPR regulations and EU data protection laws.
- Fully managed serviceOur fully managed solution, maintained by security experts around the clock, ensures your protection is always up to date, 24/7, 365 days a year.
Portfolio.
Keep infrastructure available.
- Mitigation in 0–3 s
- Always-on, no surcharge
- Unlimited attack duration
Whole networks, prefixes and autonomous systems stay reachable, because attack traffic is stopped before it reaches your infrastructure.
Secure digital revenue.
- Checkout stays online
- Bots stopped automatically
- Every block explained
Your shop and your APIs stay available, even when bots and application-layer attacks look exactly like real customers.
Accelerate digital experiences.
- Faster load times
- Less origin load
- Domain reachable under attack
Secure DNS points the way. Secure CDN moves content closer to users. Together they keep access to applications fast and resilient.
A global network. Your data stored in Europe by default.
The global Link11 network with a Layer 2 backbone delivers high availability and minimal latency. By default, your data is stored in Europe. As a European provider, Link11 is not directly subject to the US Cloud Act.
Over twenty years of our own technology. Still led by its founders.
Jens-Philipp Jung and Karsten Desler have been building the company since 2005. They continue to combine commercial responsibility and technical development in the management team.
- 2005Founded
Karsten Desler co-founds Link11 GmbH with Jens-Philipp Jung while still studying computer science, initially as a hosting provider for low-latency applications.
- 2012DDoS protection launches
Link11 launches its DDoS protection, which has been continuously developed ever since.
- 2018Qualified for critical infrastructure
The BSI lists Link11 as a qualified DDoS protection provider for critical infrastructure.
- 2020Patent for the DDoS protection filter
Link11 is awarded a patent for its DDoS protection filter.
- 2021DOSarrest joins
Link11 announces the acquisition of the DDoS protection provider DOSarrest Internet Security.
- 2024Reblaze becomes part of the group
Reblaze Technologies becomes part of the Link11 Group.
- 2025Three brands, one platform
Link11 brings three brands together on one platform with new branding.
- 2026Customer Excellence Hub in Lisbon
Link11 opens a Customer Excellence Hub in Lisbon.
- 2026Next-gen Network DDoS Protection
Link11 rebuilds its Layer 3/4 DDoS mitigation from the ground up.
The Link11 management team. Expertise, and even more passion.
- Rolf GierhardChief Revenue Officer (CRO)LinkedIn
- Maximilian HaakhChief Financial Officer (CFO)LinkedIn
- Marc LamikChief Product Officer (CPO)LinkedIn
Co-founder Jens-Philipp Jung serves as a managing director of the Link11 GmbH based in Frankfurt am Main and is responsible for commercial operations. He is a renowned IT expert and a contributor to the ICT strategy of the Federal Ministry of Education. As one of the youngest entrepreneurs of Baden-Württemberg, Jung founded his first IT company while still in school. Within the regional section of Die Jungen Unternehmer (“young entrepreneurs”), he works with dedication to promote optimal entrepreneurial conditions in Germany.
LinkedInCo-founder and managing director Karsten Desler’s responsibility at Link11 is the continuing technical development process. Patents have been filed for three features of his multi-award-winning Link11 DDoS protection solution. Apart from the continuing development of DDoS protection technology, his role encompasses system and network operations. He co-founded Link11 GmbH with Jens-Philipp Jung in 2005, when he was still studying computer science.
Our own SOC. Around the clock.
An in-house 24/7 Security Operations Center (SOC) ensures permanent infrastructure monitoring, proactive operational support and immediate incident response by experienced security experts. Customers receive a fully managed service with a designated point of contact in the EU.
Sovereignty by architecture.
At Link11, digital sovereignty is not a contractual add-on but an architectural principle. The company's own global network, with a Layer 2 backbone and 45 Points of Presence (PoPs), delivers high availability and minimal latency. By default, your data is stored in Europe. As a European provider, Link11 is not directly subject to the US Cloud Act. For companies in regulated sectors where European data sovereignty is a core requirement, this is a decisive advantage.
An international team. Working from four bases.
Different languages, cultures and mindsets, and one team in which everyone is there for everyone else. Our headquarters are in Frankfurt.
Audited and certified. Every piece of evidence with its scope.
Link11 is ISO 27001 certified, meets the requirements of PCI DSS, SOC 2 Type II and BSI C5, and is recognized by the German Federal Office for Information Security (BSI) as a qualified provider for the protection of critical infrastructure. This also helps Link11 customers meet regulatory requirements such as NIS2 and DORA.
ISO 27001
SOC 2 Type IIBSI C5
GDPR
PCI DSS
Green Web Foundation
Become part of Link11.
Cybercrime never sleeps, and our mission starts anew every day. Help us shape the future of IT security.
Let’s talk. About your architecture, or anything else.
Let’s talk
Your business stays online. We’ll show you how.