Link 11 (Dosarrest Internet Security Ltd)

Link11 has become aware of a security incident at the market intelligence provider Klue which, according to the information available to us, affected a broader group of Klue customers. Klue was connected to its customers’ Salesforce CRM environments through OAuth-based API integrations; Link11 also used such an integration. Based on the analysis conducted so far, attackers abused valid integration credentials associated […]

The post Security Incident at Third-Party Provider Klue: Certain Link11 CRM Data Affected appeared first on Link11.

Link11, a European provider of cloud-based IT security solutions specializing in network and web application security, is strengthening its commitment to digital sovereignty by opening a ‘Technical Customer Excellence Hub’ in Lisbon. This move sees the company relocating its technical customer service operations to the European Union. “With the hub in Lisbon, we are addressing the specific […]

The post Link11 is fully committed to Europe and is opening a Customer Excellence Hub in Lisbon appeared first on Link11.

In our latest Cyber Insight report, we analyze a politically motivated DDoS attack on a defense contractor. This was a Layer 7 attack, rather than a classic volumetric flood at the network level: it involved targeted pressure on the application layer. Each request must be evaluated by the WAF, involving rate limiting, session tracking, and […]

The post How Cloud Infrastructures Are Becoming Weapons of Attack appeared first on Link11.

If your network is online and generating revenue, it is a potential target. That is not an exaggeration, but the reality of the modern internet. And if you are currently relying on a standard transit provider with a DDoS mitigation service bolted on top, there is a possibility that your protection has a gap in […]

The post Clean Transit: What it is, what it can do and why it matters for your network appeared first on Link11.

Not all attacks are spectacular. Some are rather inconspicuous, without reaching record levels of bandwidth or packet volume. This was the case with the following DDoS attack: At first glance, it seemed rather unspectacular, as the volume was around 3 million requests. Compared to large-scale DDoS campaigns, this is not an exceptional figure. Nevertheless, it is worth taking a closer look […]

The post GET methods in the HTTP protocol: Why even simple requests can become a DDoS risk  appeared first on Link11.

When an enterprise becomes the target of a Distributed Denial of Service (DDoS) attack, the first action is often to block malicious traffic as quickly and rigorously as possible. But what happens when the mitigation measures overshoot the mark and lock out the very people you actually want to serve? When Protection Becomes an Obstacle: […]

The post How Intelligent DDoS Mitigation Protects Legitimate Traffic appeared first on Link11.

What happens when you take away cybercriminals’ most expensive toy? They get angry and attack. When courageous security researchers decided to paralyze over 500 command servers of the notorious IoT botnets Kimwolf and Aisuru, the hackers reacted promptly: They launched massive revenge attacks on the researchers, whose data packets were filled to the brim with […]

The post The bizarre Cyber War over Kimwolf and Aisuru appeared first on Link11.

Link11, a European specialist in IT security solutions, is delighted to announce the launch of the English-language version of its successful podcast, Follow the White Rabbit. As Jens-Philipp Jung, Link11’s CEO, emphasises, “In today’s interconnected world, cybersecurity is a global challenge that requires collective vigilance and action. By launching the English version of Follow the White Rabbit, we […]

The post Link11 Launches English-Language Version of IT Security Podcast Follow the White Rabbit  appeared first on Link11.

Not all DDoS attacks have the same objective. Some are designed simply to overload, while others are intended to conceal something more nefarious. A massive increase in requests immediately raises red flags in every SOC. However, when millions of requests flood the infrastructure in a short period, standard diagnosis often falls short.  At first glance, the case seems clear: a classic […]

The post DDoS or smokescreen? Why volume attacks are often only half the story  appeared first on Link11.

We have already established that WAAP is the logical answer to modern application architectures. But what does that mean in practice? Putting the more complex theory aside, WAAP is primarily about making security scalable and manageable.  Below, we present four key ways in which WAAP can help you regain control of your digital infrastructure.  The return of visibility  The first practical […]

The post Beyond the filter: How does WAAP support everyday IT operations?  appeared first on Link11.

In IT security, the following principle often applies: introduce a new tool for every new problem. As a result, many companies have developed a digital patchwork quilt over time. Endpoint protection here, firewalls there, identity management, DDoS protection, WAF, bot management, and API security—everything was purchased, configured, and operated individually.   On paper, this looks like seamless coverage. In operational reality, however, […]

The post Using lots of security solutions? How fewer tools lead to more control  appeared first on Link11.

Web applications are the backbone of modern businesses. They serve as sales platforms, customer interfaces, and process engines. There is no question that this infrastructure must be protected.   But in an IT landscape that is rapidly evolving toward APIs and microservices, one thing remains constant: standing still means risk. In light of this, is the classic protection approach still sufficient?  […]

The post WAF is yesterday’s news: Why WAAP is the answer to today’s threats  appeared first on Link11.

Some DDoS attacks are loud. Others are large. And still others are one thing above all else: widespread. A recent incident in the Link11 network shows how effective so-called carpet bombing can be. Within just two minutes, not a single server but an entire “/20 network” with more than 4,000 IP addresses was attacked.  What at first glance appears […]

The post When an entire network comes under attack: Carpet bombing as a DDoS strategy  appeared first on Link11.

Link11, a European provider of cloud-based IT security solutions, was honored at the G2 Best Software Awards 2026, ranking 22nd in the Best German Software Companies category. As the world’s largest software marketplace, G2 reaches over 100 million buyers annually. The regular Best Software Awards recognize the world’s best software companies and products based on authentic and […]

The post Link11 ranks among the best German software companies at the G2 Awards appeared first on Link11.

Artificial intelligence is fundamentally changing internet traffic. But while many companies are already feeling the strain of AI crawlers on their infrastructures, they often lack clarity, reliable data, and operational control. With the new “AI Management Dashboard,” the European IT security provider is closing this gap and, for the first time, making AI traffic transparent, controllable, and […]

The post Link11 launches AI Management Dashboard for clean traffic appeared first on Link11.

On Wednesday morning, Deutsche Bahn reported what many travelers were already feeling: the booking app DB Navigator and the website bahn.de were down following a massive DDoS attack. The pro-russian hacker group ‘NoName057’ has since claimed responsibility, underscoring the incident’s geopolitical dimension. Although the systems were stabilized, this incident is more than just a fleeting […]

The post 3 Learnings every Company should draw from the DDoS Attack on Deutsche Bahn appeared first on Link11.

We are at a historic turning point for the internet. What was already becoming apparent in 2024 is now a reality: Automated traffic has overtaken human traffic and now accounts for over 51% of all data traffic.  The driving force behind this development is no longer just classic search engine bots or malicious attackers but a new, explosive category: AI crawlers. […]

The post From Blind Spots to Conscious Decisions: Why AI Governance Starts Today appeared first on Link11.

In January, our analysts observed an unusual attack pattern at a major European e-commerce provider. It was not a classic DDoS attack with massive traffic volumes. Instead, over several weeks, there was a subtle, recurring increase in load that noticeably slowed down the web shop on Mondays.  This case is exemplary of a new generation of attacks in which […]

The post When real devices become weapons – a new form of low-and-slow attack  appeared first on Link11.

The digital threat landscape is becoming more complex every day, and with it, the pressure on companies to ensure data security and regulatory compliance is growing. But how can you be sure that your cybersecurity partner isn’t just talking about protection, but also demonstrably practicing it? How do you know who you can trust with […]

The post Tested and certified to be secure: How five key security standards protect your company appeared first on Link11.

Thursday – 29th January 2026 – 14:00 CET In an era where web applications and APIs form the backbone of digital business models, they have also become prime targets for cyberattacks. Companies face the challenge of managing a growing and increasingly complex threat landscape without complicating performance or administration. In this webinar, you will hear […]

The post Webinar: Unlocking Web & API Security appeared first on Link11.