Was ist das eigentlich? Cyberrisiken verständlich erklärt

Es wird viel über Cyberrisiken gesprochen. Oftmals fehlt aber das grundsätzliche Verständnis, was Cyberrisiken überhaupt sind. Ohne diese zu verstehen, lässt sich aber auch kein Versicherungsschutz gestalten.

Beinahe alle Aktivitäten des täglichen Lebens können heute über das Internet abgewickelt werden. Online-Shopping und Online-Banking sind im Alltag angekommen. Diese Entwicklung trifft längst nicht nur auf Privatleute, sondern auch auf Firmen zu. Das Schlagwort Industrie 4.0 verheißt bereits eine zunehmende Vernetzung diverser geschäftlicher Vorgänge über das Internet.

Anbieter von Cyberversicherungen für kleinere und mittelständische Unternehmen (KMU) haben Versicherungen die Erfahrung gemacht, dass trotz dieser eindeutigen Entwicklung Cyberrisiken immer noch unterschätzt werden, da sie als etwas Abstraktes wahrgenommen werden. Für KMU kann dies ein gefährlicher Trugschluss sein, da gerade hier Cyberattacken existenzbedrohende Ausmaße annehmen können. So wird noch häufig gefragt, was Cyberrisiken eigentlich sind. Diese Frage ist mehr als verständlich, denn ohne (Cyber-)Risiken bestünde auch kein Bedarf für eine (Cyber-)Versicherung.

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Exam Number : CKA
Exam Name : Certified Kubernetes Administrator 2025
Vendor Name : CNCF
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CKA test Format | CKA Course Contents | CKA Course Outline | CKA test Syllabus | CKA test Objectives

Certification Name: Certified Kubernetes Administrator (CKA)
Provider: Cloud Native Computing Foundation (CNCF) and Linux Foundation
Target Audience: Kubernetes administrators, DevOps engineers, and IT professionals managing Kubernetes clusters.
Exam Format: Performance-based (hands-on tasks in a live Kubernetes environment).
Number of Questions: 15-20 performance-based tasks.
Duration: 2 hours.
Passing Score: 66% (on a scale of 0-100).
Language: English.
Delivery Method: Online proctored exam.

Exam Objectives
The CKA test focuses on the following key objectives:

Cluster Architecture, Installation, and Configuration:
- Understanding Kubernetes cluster components.
- Installing and configuring Kubernetes clusters.

Workloads and Scheduling:
- Managing workloads using Deployments, Pods, and DaemonSets.
- Configuring scheduling for workloads.

Services and Networking:
- Configuring networking and services in Kubernetes.
- Managing ingress and egress traffic.

Storage:
- Configuring persistent storage for applications.
- Managing Persistent Volumes (PVs) and Persistent Volume Claims (PVCs).

Troubleshooting:
- Diagnosing and resolving issues in Kubernetes clusters.
- Debugging application and cluster-level problems.

Security:
- Implementing security best practices in Kubernetes.
- Managing authentication, authorization, and encryption.

Topic Details
The CKA test covers the following domains and topics:

1. Cluster Architecture, Installation, and Configuration (25%)
- Key Topics:
- Kubernetes cluster components (API server, etcd, kubelet, scheduler, controller manager).
- Installing and configuring Kubernetes using tools like kubeadm.
- Managing high-availability clusters.
- Upgrading Kubernetes clusters.
- Configuring etcd for high availability.

2. Workloads and Scheduling (15%)
- Key Topics:
- Creating and managing Pods, Deployments, and DaemonSets.
- Configuring resource limits and requests.
- Managing rolling updates and rollbacks.
- Configuring scheduling policies and affinity/anti-affinity rules.

3. Services and Networking (20%)
- Key Topics:
- Configuring ClusterIP, NodePort, and LoadBalancer services.
- Managing ingress controllers and ingress resources.
- Configuring network policies.
- Troubleshooting network issues.

4. Storage (10%)
- Key Topics:
- Configuring Persistent Volumes (PVs) and Persistent Volume Claims (PVCs).
- Managing storage classes.
- Configuring dynamic provisioning.
- Troubleshooting storage issues.

5. Troubleshooting (30%)
- Key Topics:
- Diagnosing application and cluster-level issues.
- Debugging Pods, Nodes, and control plane components.
- Monitoring and logging in Kubernetes.
- Using tools like kubectl, kubeadm, and etcdctl for troubleshooting.

6. Security (10%)
- Key Topics:
- Configuring authentication and authorization (RBAC).
- Managing secrets and ConfigMaps.
- Configuring network policies and encryption.
- Implementing security best practices for Kubernetes clusters.

Key Terminology
Below is a list of key terms relevant to the CKA exam:

- Pod
- Deployment
- Service
- Persistent Volume (PV)
- Persistent Volume Claim (PVC)
- Namespace
- RBAC (Role-Based Access Control)
- Ingress
- kubectl
- etcd

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Warum sind Cyberrisiken so schwer greifbar?

Als mehr oder weniger neuartiges Phänomen stellen Cyberrisiken Unternehmen und Versicherer vor besondere Herausforderungen. Nicht nur die neuen Schadenszenarien sind abstrakter oder noch nicht bekannt. Häufig sind immaterielle Werte durch Cyberrisiken in Gefahr. Diese wertvollen Vermögensgegenstände sind schwer bewertbar.

Obwohl die Gefahr durchaus wahrgenommen wird, unterschätzen viele Firmen ihr eigenes Risiko. Dies liegt unter anderem auch an den Veröffentlichungen zu Cyberrisiken. In der Presse finden sich unzählige Berichte von Cyberattacken auf namhafte und große Unternehmen. Den Weg in die Presse finden eben nur die spektakulären Fälle. Die dort genannten Schadenszenarien werden dann für das eigene Unternehmen als unrealistisch eingestuft. Die für die KMU nicht minder gefährlichen Cyberattacken werden nur selten publiziert.

Aufgrund der fehlenden öffentlichen Meldungen von Sicherheitsvorfällen an Sicherheitsbehörden und wegen der fehlenden Presseberichte fällt es schwer, Fakten und Zahlen zur Risikolage zu erheben. Aber ohne diese Grundlage fällt es schwer, in entsprechende Sicherheitsmaßnahmen zu investieren.

Erklärungsleitfaden anhand eines Ursache-Wirkungs-Modells

Häufig nähert man sich dem Thema Cyberrisiko anlass- oder eventbezogen, also wenn sich neue Schadenszenarien wie die weltweite WannaCry-Attacke entwickeln. Häufig wird auch akteursgebunden beleuchtet, wer Angreifer oder Opfer sein kann. Dadurch begrenzt man sich bei dem Thema häufig zu sehr nur auf die Cyberkriminalität. Um dem Thema Cyberrisiko jedoch gerecht zu werden, müssen auch weitere Ursachen hinzugezogen werden.

Mit einer Kategorisierung kann das Thema ganzheitlich und nachvollziehbar strukturiert werden. Ebenso hilft eine solche Kategorisierung dabei, eine Abgrenzung vorzunehmen, für welche Gefahren Versicherungsschutz über eine etwaige Cyberversicherung besteht und für welche nicht.

Die Ursachen sind dabei die Risiken, während finanzielle bzw. nicht finanzielle Verluste die Wirkungen sind. Cyberrisiken werden demnach in zwei Hauptursachen eingeteilt. Auf der einen Seite sind die nicht kriminellen Ursachen und auf der anderen Seite die kriminellen Ursachen zu nennen. Beide Ursachen können dabei in drei Untergruppen unterteilt werden.

Nicht kriminelle Ursachen

Höhere Gewalt

Häufig hat man bei dem Thema Cyberrisiko nur die kriminellen Ursachen vor Augen. Aber auch höhere Gewalt kann zu einem empfindlichen Datenverlust führen oder zumindest die Verfügbarkeit von Daten einschränken, indem Rechenzentren durch Naturkatastrophen wie beispielsweise Überschwemmungen oder Erdbeben zerstört werden. Ebenso sind Stromausfälle denkbar.

Menschliches Versagen/Fehlverhalten

Als Cyberrisiken sind auch unbeabsichtigtes und menschliches Fehlverhalten denkbar. Hierunter könnte das versehentliche Veröffentlichen von sensiblen Informationen fallen. Möglich sind eine falsche Adressierung, Wahl einer falschen Faxnummer oder das Hochladen sensibler Daten auf einen öffentlichen Bereich der Homepage.

Technisches Versagen

Auch Hardwaredefekte können zu einem herben Datenverlust führen. Neben einem Überhitzen von Rechnern sind Kurzschlüsse in Systemtechnik oder sogenannte Headcrashes von Festplatten denkbare Szenarien.

Kriminelle Ursachen

Hackerangriffe

Hackerangriffe oder Cyberattacken sind in der Regel die Szenarien, die die Presse dominieren. Häufig wird von spektakulären Datendiebstählen auf große Firmen oder von weltweiten Angriffen mit sogenannten Kryptotrojanern berichtet. Opfer kann am Ende aber jeder werden. Ziele, Methoden und auch das Interesse sind vielfältig. Neben dem finanziellen Interesse können Hackerangriffe auch zur Spionage oder Sabotage eingesetzt werden. Mögliche Hackermethoden sind unter anderem: Social Engineering, Trojaner, DoS-Attacken oder Viren.

Physischer Angriff

Die Zielsetzung eines physischen Angriffs ist ähnlich dem eines Hackerangriffs. Dabei wird nicht auf die Tools eines Hackerangriffs zurückgegriffen, sondern durch das physische Eindringen in Unternehmensgebäude das Ziel erreicht. Häufig sind es Mitarbeiter, die vertrauliche Informationen stehlen, da sie bereits den notwendigen Zugang zu den Daten besitzen.

Erpressung

Obwohl die Erpressung aufgrund der eingesetzten Methoden auch als Hackerangriff gewertet werden könnte, ergibt eine Differenzierung Sinn. Erpressungsfälle durch Kryptotrojaner sind eines der häufigsten Schadenszenarien für kleinere und mittelständische Unternehmen. Außerdem sind auch Erpressungsfälle denkbar, bei denen sensible Daten gestohlen wurden und ein Lösegeld gefordert wird, damit sie nicht veröffentlicht oder weiterverkauft werden.

Ihre Cyberversicherung sollte zumindet folgende Schäden abdecken:

Cyber-Kosten:

Soforthilfe und Forensik-Kosten (Kosten der Ursachenermittlung, Benachrichtigungskosten und Callcenter-Leistung)
Krisenkommunikation / PR-Maßnahmen
Systemverbesserungen nach einer Cyber-Attacke
Aufwendungen vor Eintritt des Versicherungsfalls

Cyber-Drittschäden (Haftpflicht):

Befriedigung oder Abwehr von Ansprüchen Dritter
Rechtswidrige elektronische Kommunikation
Ansprüche der E-Payment-Serviceprovider
Vertragsstrafe wegen der Verletzung von Geheimhaltungspflichten und Datenschutzvereinbarungen
Vertragliche Schadenersatzansprüche
Vertragliche Haftpflicht bei Datenverarbeitung durch Dritte
Rechtsverteidigungskosten

Cyber-Eigenschäden:

Betriebsunterbrechung
Betriebsunterbrechung durch Ausfall von Dienstleister (optional)
Mehrkosten
Wiederherstellung von Daten (auch Entfernen der Schadsoftware)
Cyber-Diebstahl: elektronischer Zahlungsverkehr, fehlerhafter Versand von Waren, Telefon-Mehrkosten/erhöhte Nutzungsentgelte
Cyber-Erpressung
Entschädigung mit Strafcharakter/Bußgeld
Ersatz-IT-Hardware
Cyber-Betrug

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Cyber-Kosten:

Cyber-Drittschäden (Haftpflicht):

Cyber-Eigenschäden:

Latest 2025 Updated CNCF Certified Kubernetes Administrator 2025 Syllabus
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