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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Cloudera CCA175 : CCA Spark and Hadoop Developer exam Dumps

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Exam Number : CCA175
Exam Name : CCA Spark and Hadoop Developer
Vendor Name : Cloudera
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CCA175 exam Format | CCA175 Course Contents | CCA175 Course Outline | CCA175 exam Syllabus | CCA175 exam Objectives

Exam Detail:
The CCA175 (CCA Spark and Hadoop Developer) is a certification exam that validates the skills and knowledge of individuals in developing and deploying Spark and Hadoop applications. Here are the exam details for CCA175:

- Number of Questions: The exam typically consists of multiple-choice and hands-on coding questions. The exact number of questions may vary, but typically, the exam includes around 8 to 12 tasks that require coding and data manipulation.

- Time Limit: The time allocated to complete the exam is 120 minutes (2 hours).

Course Outline:
The CCA175 course covers various subjects related to Apache Spark, Hadoop, and data processing. The course outline typically includes the following topics:

1. Introduction to Big Data and Hadoop:
- Overview of Big Data concepts and challenges.
- Introduction to Hadoop and its ecosystem components.

2. Hadoop File System (HDFS):
- Understanding Hadoop Distributed File System (HDFS).
- Managing and manipulating data in HDFS.
- Performing file system operations using Hadoop commands.

3. Apache Spark Fundamentals:
- Introduction to Apache Spark and its features.
- Understanding Spark architecture and execution model.
- Writing and running Spark applications using Spark Shell.

4. Spark Data Processing:
- Transforming and manipulating data using Spark RDDs (Resilient Distributed Datasets).
- Applying transformations and actions to RDDs.
- Working with Spark DataFrames and Datasets.

5. Spark SQL and Data Analysis:
- Querying and analyzing data using Spark SQL.
- Performing data aggregation, filtering, and sorting operations.
- Working with structured and semi-structured data.

6. Spark Streaming and Data Integration:
- Processing real-time data using Spark Streaming.
- Integrating Spark with external data sources and systems.
- Handling data ingestion and data integration challenges.

Exam Objectives:
The objectives of the CCA175 exam are as follows:

- Evaluating candidates' knowledge of Hadoop ecosystem components and their usage.
- Assessing candidates' proficiency in coding Spark applications using Scala or Python.
- Testing candidates' ability to manipulate and process data using Spark RDDs, DataFrames, and Spark SQL.
- Assessing candidates' understanding of data integration and streaming concepts in Spark.

Exam Syllabus:
The specific exam syllabus for the CCA175 exam covers the following areas:

1. Data Ingestion: Ingesting data into Hadoop using various techniques (e.g., Sqoop, Flume).

2. Transforming Data with Apache Spark: Transforming and manipulating data using Spark RDDs, DataFrames, and Spark SQL.

3. Loading Data into Hadoop: Loading data into Hadoop using various techniques (e.g., Sqoop, Flume).

4. Querying Data with Apache Hive: Querying data stored in Hadoop using Apache Hive.

5. Data Analysis with Apache Spark: Analyzing and processing data using Spark RDDs, DataFrames, and Spark SQL.

6. Writing Spark Applications: Writing and executing Spark applications using Scala or Python.

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Exam Policies and Procedures

The Final Exams Policy is established by the Office of the Provost and may be reviewed here.

Exam Schedules Final exam Scheduling

A final evaluation, administered in the final exam week, is required for all courses with the exception of laboratory classes. The final exam week varies by term as follows:

Fall Quarter – Monday through SaturdayWinter Quarter – Monday through SaturdaySpring Quarter – Monday through SaturdaySummer Quarter – Tuesday through Saturday

Drexel Central posts the final exam schedule no later than 5:00 pm on the Wednesday of the 4th week of each respective term. Room assignments are posted by 5:00 pm on the Friday of the 5th week of each respective term.

Courses meeting on or after 6:00 p.m., Saturday courses, and part-of-term courses will have their final exam, if applicable, in their regularly assigned classroom during their regularly assigned meeting time as scheduled by the instructor.

Final exam Relief Procedure

Undergraduate students may occasionally have three or more exams in one day. If this is the case, students may request relief by having special examinations assigned according to the following policy. This request may be made to the Office of the University Registrar at least five days before the examination date. While examinations for undergraduate and graduate level courses are considered in the determination of final examination conflicts, only undergraduate level examinations are eligible to be rescheduled.

In the fall and spring terms, the courses with higher course numbers will be asked to give a special exam (MKTG 346 is higher than ACCT 111).

In the winter and summer terms, the courses with lower course numbers will be asked to give the special exam (ACCT 111 is lower than MKTG 346).

To request relief, please get the appeal form and email your completed form to exammail@drexel.edu.

Personalized exam Schedules

For instructions on how to view your personalized Final exam Schedule on DrexelOne, click here.

Common Midterm exam Procedures

Select freshman and sophomore level courses have a co-requisite course of exam 080, exam 081 or exam 082. These courses serve as placeholders for the scheduling of common midterm exams outside of normal class hours for large, multiple lecture courses.

The specific dates and room assignments for the exams will be provided to students on the course syllabus.

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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