Link 11 (Dosarrest Internet Security Ltd)

The attack in question was neither new nor particularly sophisticated. Yet, in less than 60 seconds, an attack with a bandwidth of 370 gigabits per second was underway. Without DDoS protection, anyone would simply go offline in such a situation. This case is instructive because of the textbook method used to carry out the attack–a […]

The post The Buffer Trick: How Incomplete Packets Can Overwhelm a Firewall appeared first on Link11.

The QKS Group evaluates providers of bot management solutions based on technological excellence and customer value. Link11 is recognized for its integrated WAAP (Web Application and API Protection) approach. In its latest market analysis, SPARK Matrix™: Bot Management, Q3 2026, analyst firm QKS Group positioned Link11 as a leader. The study evaluates leading providers of […]

The post Link11 from QKS Group Positioned as a Leader in the SPARK Matrix™: Bot Management, Q3 2026 appeared first on Link11.

Since January 17, 2025, the Digital Operational Resilience Act (DORA) has been binding for nearly all supervised financial entities in the EU. It requires banks, insurers, and payment service providers to consistently manage ICT risks. The goal is to strengthen the digital resilience of the entire financial system. Why DORA replaces national rules Before DORA, […]

The post Understanding DORA: How to Achieve Digital Resilience in the Financial Sector appeared first on Link11.

The new Link11 European Cyber Report for the first half of 2026 provides a nuanced view: Although the decline in DDoS attacks on the Link11 network for European companies may sound like a reprieve at first, it’s clear that the attacks haven’t become less frequent. Rather, they’ve become more targeted and intense than ever before. […]

The post Fewer attacks, more force: Link11’s European Cyber Report finds new DDoS records for the first half of 2026 appeared first on Link11.

According to Bitkom’s latest “Wirtschaftsschutz 2026” study, cyberattacks on companies have reached a new record level. Ninety-six percent of the surveyed companies were affected by data theft, industrial espionage, or sabotage over the past year, or suspect that they were. The resulting damage to the German economy is estimated to range between 211 and 270.8 […]

The post Bitkom Economic Security Study 2026: Why Cyberattacks Have Become an Existential Risk for Companies appeared first on Link11.

Shortly before 9 p.m., a company came under fire, with two to three million requests per minute being directed at a single domain. The defences held firm, blocking more than 99.9 per cent of the traffic. Nevertheless, around 1,000 requests per minute got through. This was not because the protection failed. The attacker had exploited […]

The post Two Million Requests per Minute — and the Gap Was Only Six Characters Wide appeared first on Link11.

In July 2026, the threat intelligence team at Palo Alto Networks’ Unit 42 published an unusual analysis. After examining an IoT botnet called TuxBot v3 Evolution, the researchers discovered that large portions of the malicious code did not originate from a human but rather from a language model. The model even left its own train […]

The post TuxBot and the New Era of Botnets appeared first on Link11.

On May 5, 2026, shortly after dinner, millions of German websites simply vanished from the internet. It wasn’t hackers, it wasn’t bombs, and the power wasn’t out either. The cause was a problem with the DNSSEC implementation at DENIC, the custodian of all .de domains. Amazon, DHL, major news portals: Suddenly, they were no longer […]

The post The Evening When the German Internet Briefly Ceased to Exist appeared first on Link11.

DDoS attacks affect companies of all sizes, and they rarely come at a convenient time. To remain capable of responding in an emergency, you must lay the groundwork well in advance. What this means in concrete terms must be clarified from technical, organizational, and regulatory perspectives. Reports are piling up: websites are down, services have […]

The post By the time the attack hits, it’s too late: How to build DDoS-resilient infrastructure now appeared first on Link11.

In late April 2026, the Federal Office for Information Security adopted a particularly ambitious set of cloud regulations. The C3A criteria catalog – short for “Criteria enabling Cloud Computing Autonomy” – is intended to define when a cloud provider is truly sovereign. The idea is sound. But the closer you look, the more questions arise. […]

The post C3A: A Broad Framework, Unanswered Questions – What IT Managers Need to Know Now appeared first on Link11.

Shortly after half past eleven at night, the dashboards of the Security Operations Center showed everything was green. Initially, there were only a few requests per minute, which was in line with what one would expect for a .de domain at that hour. However, within five minutes, the numbers exploded, reaching over 900,000 requests against […]

The post Green Light, Red Alarm: What a Bot Attack on a Payment API Reveals About Modern Attack Methods appeared first on Link11.

It was a perfectly ordinary morning. Roland Hambach, CEO of ene’t GmbH, was sitting at breakfast scrolling through his emails. Then came the first one with the subject line “DDoS Attack.” Then the second. Then the third. His first instinct: spam, delete. But then the IT department sounded the alarm at the same time.   What followed was […]

The post Three Emails, Then Silence: What a DDoS Attack Teaches a CEO appeared first on Link11.

Today’s DDoS attacks are not just simple volume or protocol attacks anymore. They can originate from comprised devices within trusted and legitimate networks, mimic real traffic, and appear in short high-intensity bursts that leave little time for manual response. Link11 has completely rebuilt its Layer 3/4 DDoS mitigation solution from the ground up.  The Next-gen Network DDoS Protection combines proactive protection built for the AI era, and behavior-based detection with full IPv4 […]

The post Link11 provides the next generation of modern network DDoS protection appeared first on Link11.

DDoS attacks are rapidly growing in intensity and precision. They are now shorter, more targeted, and increasingly AI-generated. Link11 Network DDoS Protection has always been a strong and reliable standard for organizations looking to secure their network infrastructure. But the demands of modern enterprise networks have changed. Attackers are continuously refining their strategies. And the last thing your team deserves is the pressure to constantly recalibrate when an attack is underway.  Therefore, in direct response to the […]

The post Next Gen Network DDoS Protection: What Has Improved for Your Network appeared first on Link11.

A two-stage DDoS attack with a bandwidth of over one terabit, targeting login, download, and admin sections, shows that modern attackers test systems during an attack as well as beforehand.  There were two waves of attacks, separated by a ten-hour break. In total, over 335 million requests were sent. These included targeted attempts to log […]

The post 335 million requests, a ten-hour break – then a second attempt  appeared first on Link11.

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.