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EX0-105: From ISO/IEC 27002 Foundations to Current EXIN Information Security Foundation

EX0-105 is an older EXIN exam-code label for Information Security Foundation material historically described as being based on ISO/IEC 27002. EXIN's current foundation credential is presented as Information Security Foundation based on ISO/IEC 27001. The current exam remains active, but candidates should not assume that an old EX0-105 blueprint or legacy wording is identical to the present syllabus.

EXIN currently lists the foundation exam as 40 multiple-choice questions in 60 minutes with a 65 percent pass mark. Its main subjects are information and security, threats and risks, approach and organization, measures, and legislation and regulation. The credential belongs to the broader EXIN certifications portfolio and forms a logical base for the advanced Information Security Management Professional path.

The important transition is conceptual as well as editorial. ISO/IEC 27001 defines requirements for an information security management system, while ISO/IEC 27002 provides guidance on information security controls. Current preparation should understand how the standards work together rather than treating the older “based on ISO/IEC 27002” label as a complete description of modern information-security management.

Information security begins with the value of information

Information can create revenue, enable operations, preserve legal rights, support decisions, and sustain customer trust. Security exists to protect those outcomes. A useful starting model is confidentiality, integrity, and availability: information should be accessible only to authorized parties, remain accurate and complete, and be available when legitimate users need it. The CIA triad is valuable because it turns an abstract security goal into three practical questions.

Apply the model to ordinary business assets. A payroll file needs confidentiality because it contains sensitive data, integrity because unauthorized salary changes would be harmful, and availability because payroll must be processed on time. Different assets produce different priorities. The exam is easier when you can reason from business impact rather than memorizing the three words in isolation.

Information classification helps translate value into handling rules. Public marketing material, internal operational information, personal data, trade secrets, and authentication secrets may require different access, storage, transmission, retention, and disposal controls. The classification itself is useful only when it changes behavior. Practice matching an information category to proportionate handling requirements and identifying who should own the classification decision.

Threat, vulnerability, risk, and incident are related but not interchangeable

A threat is a potential cause of harm, while a vulnerability is a weakness that can be exploited or triggered. Risk considers the possibility that a threat will exploit a vulnerability and the resulting impact. An incident is an event or series of events that can compromise security. Candidates frequently lose marks by choosing a term that sounds security-related but describes the wrong point in this chain.

Build examples that move through the sequence. A phishing campaign is a threat; weak awareness or poor email controls may create vulnerability; credential theft and unauthorized access represent risk scenarios; and a confirmed account compromise becomes an incident that requires response. This exercise also teaches why risk treatment should address causes and exposure rather than only reacting after damage occurs.

The same vulnerability can create different risk in different contexts. An unsupported server isolated in a laboratory may have lower business exposure than the same server connected to a critical production network. Likewise, a threat with high likelihood may still produce modest risk if impact is limited. Exam preparation should therefore avoid formulaic statements such as “old software always means critical risk” without considering asset value, exposure, and controls.

Risk assessment connects security choices to business priorities

No organization can eliminate every risk. Security management therefore requires identification, analysis, evaluation, and treatment. The goal is to decide which risks need stronger controls, which can be accepted, which should be transferred or shared, and which activities should be avoided. A control is valuable when it changes risk in a way that supports business objectives and obligations.

Risk management in ISO 27001 and ISO 31000 can deepen this perspective. For exam preparation, practice comparing two treatment options and explaining the trade-off among likelihood, impact, cost, usability, and residual risk instead of assuming that “more security” is automatically the best answer.

Organization and governance determine whether controls are sustainable

Policies, responsibilities, ownership, segregation of duties, leadership support, and review mechanisms turn individual safeguards into a managed security program. A technically strong control can fail if nobody owns it, exceptions are unmanaged, responsibilities conflict, or leadership incentives reward behavior that bypasses security. This is why information security is an organizational discipline rather than only a technology function.

Understanding information security governance helps connect policy and decision rights to daily controls. When working through scenarios, ask who is accountable, what policy or objective applies, how compliance is demonstrated, and how performance will be reviewed. Those questions expose gaps that a purely technical answer may miss.

Controls should be selected as a coordinated set

Information security controls can be organizational, people-focused, physical, or technological. Access control, backup, encryption, awareness, supplier requirements, secure configuration, logging, environmental protection, and incident procedures each address different aspects of risk. The goal is defense in depth: multiple complementary controls make it harder for a single failure to become a serious breach.

Practice mapping controls to the risks they reduce. Multi-factor authentication can reduce the chance that a stolen password becomes account takeover, but it does not replace authorization design, monitoring, or user lifecycle controls. A locked server room protects physical access, but it does not prevent remote exploitation. Thinking in layers prevents the exam mistake of treating one familiar control as a universal solution.

Control effectiveness also depends on operation over time. A policy that requires access reviews is ineffective if reviews are never performed; an encryption standard is weak if keys are poorly managed; a backup is not a recovery control until restoration has been tested. For each safeguard, ask what evidence would show that it is implemented, operating, and achieving the intended risk reduction. This connects foundation concepts to real governance practice.

ISO/IEC 27001 and ISO/IEC 27002 serve different purposes

Legacy EX0-105 descriptions often emphasize ISO/IEC 27002 because that standard is closely associated with control guidance. Current EXIN branding centers the foundation credential on ISO/IEC 27001 while still using the broader family of information-security concepts. The distinction between ISO 27001 and ISO 27002 is therefore worth understanding directly.

ISO/IEC 27001 specifies requirements for an information security management system, including the risk-based management framework. ISO/IEC 27002 offers guidance that helps organizations understand and apply information security controls. A candidate should not describe one as simply the “new version” of the other; they are complementary standards with different roles.

Legislation and regulation shape security requirements but do not replace risk management

Organizations may need to comply with privacy laws, contractual security clauses, sector rules, employment requirements, intellectual-property obligations, and records-retention duties. These obligations can impose minimum controls, reporting duties, or restrictions on information handling. Compliance is therefore an input to security management, not an optional topic that sits outside the risk process.

At the same time, being compliant with one regulation does not prove that every material business risk has been treated. Exam scenarios may contrast a legal requirement with broader good practice. Identify the binding obligation first, then consider whether additional controls are needed because the organization's risk exposure extends beyond the regulation's minimum requirements.

Privacy obligations illustrate the relationship well. Protecting personal data can require lawful handling, appropriate access, retention limits, breach response, and accountability. Security controls support those duties, but information security and privacy are not identical disciplines. A candidate should be able to recognize when a scenario is about confidentiality and integrity controls and when it also involves specific legal rights or processing obligations.

Current study material should replace legacy code assumptions

Use the current EXIN preparation guide as the syllabus authority. Older EX0-105 material can still help with enduring concepts such as CIA, risk, controls, and governance, but it may use outdated standard references or terminology. Build a conversion sheet that lists any old term beside the current wording and note whether the concept itself changed or only the label did.

This version discipline is especially important in standards-based certifications because standards are revised. Avoid memorizing control numbers or structures from an older edition unless the current syllabus explicitly requires them. The safer approach is to understand control intent, risk reasoning, and management-system logic, then learn the current official structure used by the exam.

Preparation should move from concepts to applied security judgment

Begin with information value and the CIA model, then learn threats, vulnerabilities, risk, treatment, governance, controls, and legal considerations. After each topic, solve scenarios and explain why each incorrect option fails. If two answers seem plausible, look for the one that best fits the stated role, risk, policy, or stage of the security process.

A candidate ready for the current foundation exam should be able to explain why a control is needed, what risk it changes, who should own the decision, and how the control fits into a managed security system. That level of understanding is more useful professionally and more resilient to exam updates than relying on a legacy EX0-105 label as if it still described the whole certification.

In the final week, rotate among short mixed sets instead of studying one domain for an entire day. Interleaving forces you to identify the type of problem before solving it, which is closer to exam conditions. Revisit errors after a delay and explain the correction without looking at notes. If you can teach the difference between risk, control, policy, incident, and compliance in plain language, your knowledge is becoming transferable rather than question-specific.

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