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| Section | Objectives |
|---|---|
| Addressing Risk with Selected Security Counter Measures | - Patch management - Anti-virus and endpoint protection - Virtual Private Networks (VPNs) - Firewalls and network security devices |
| Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Security challenges in OT environments - Convergence of IT and OT |
| Addressing Risk with Security Policy, Organization, and Awareness | - Organizational security roles and responsibilities - Security policies and procedures - Security awareness and training |
| Risk Analysis | - Risk and vulnerability analysis techniques - Cybersecurity risk assessment concepts - Risk management fundamentals |
| Validating or Verifying the Security of Systems | - Security validation and verification techniques - Auditing and compliance - Continuous improvement of security measures |
| How Cyberattacks Happen | - Case studies of industrial cyber incidents - Vulnerabilities in industrial systems - Cyber threats and attack vectors |
| Addressing Risk with Implementation Measures | - Access control principles - Defense-in-depth strategy - Zones and conduits model - Industrial network architecture and segmentation |
| Creating A Security Program | - Security management organization - Defining information security policy - Developing a long-term security program |
| Monitoring and Improving the CSMS | - Incident detection and response - Security lifecycle management - Continuous monitoring of IACS cybersecurity |
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NEW QUESTION # 137
Which type of cryptographic algorithms requires more than one key?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
Asymmetric (public) key algorithms are a type of cryptographic algorithms that require more than one key. Asymmetric key algorithms use a pair of keys, one for encryption and one for decryption, that are mathematically related but not identical1. The encryption key is usually made public, while the decryption key is kept private. This allows anyone to encrypt a message using the public key, but only the intendedrecipient can decrypt it using the private key1. Asymmetric key algorithms are also known as public key algorithms or public key cryptography1. Asymmetric key algorithms are used for various purposes, such as digital signatures, key exchange, and encryption2. Some examples of asymmetric key algorithms are RSA, Diffie-Hellman, ElGamal, and Elliptic Curve Cryptography2.
References: Asymmetric Algorithm or Public Key Cryptography - IBM, Cryptography 101: Key Principles, Major Types, Use Cases & Algorithms | Splunk.
NEW QUESTION # 138
What are the connections between security zones called?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 139
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)
Answer: B
NEW QUESTION # 140
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)
Answer: A,B
Explanation:
Multiuser accounts and shared passwords are accounts and passwords that are used by more than one person to access a system or a resource. They inherently carry the risk of unauthorized access, which means that someone who is not authorized or intended to use the account or password can gain access to the system or resource, and potentially compromise its confidentiality, integrity, or availability. For example, if a multiuser account and password are shared among several operators of an industrial automation and control system (IACS), an attacker who obtains the password can use the account to access the IACS and perform malicious actions, such as changing the system settings, deleting data, or disrupting the process. Multiuser accounts and shared passwords also make it difficult to track and audit the activities of individual users, and to enforce the principle of least privilege, which states that users should only have the minimum level of access required to perform their tasks. Therefore, the ISA/IEC 62443 standards recommend avoiding the use of multiuser accounts and shared passwords, and instead using individual accounts and strong passwords for each user, and implementing authentication and authorization mechanisms to control the access to the IACS. References:
* ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels1
* ISA/IEC 62443-2-1:2009 - Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program2
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course3
Shared passwords and multiuser accounts pose specific risks, notably unauthorized access and privilege escalation. In ISA/IEC 62443's framework, these practices are discouraged because they complicate the attribution of actions to individual users and increase the likelihood that accounts can be used beyond their intended scope. Unauthorized access occurs when individuals exploit the shared nature of an account to gain entry to systems or data that they should not access. Privilege escalation can happen when users leverage shared accounts to perform actions at higher permission levels than those assigned to their personal accounts.
Conversely, buffer overflows and race conditions are types of vulnerabilities or programming errors, not directly associated with the risks of multiuser accounts or shared passwords.
NEW QUESTION # 141
What are the two elements of the risk analysis category of an IACS?
Answer: B
Explanation:
According to ISA/IEC 62443-3-2, the risk analysis phase in the IACS security lifecycle includes both the business rationale and the risk identification and classification. This ensures that risk decisions are based not only on technical vulnerability but also on business impact and operational context.
"The risk analysis process includes identification and classification of risks based on a defined business rationale. This ensures that the protection requirements are aligned with the organization's risk tolerance and operational priorities."
- ISA/IEC 62443-3-2:2020, Section 6.4 - Risk Assessment and SL Targeting The term business rationale refers to understanding the value and criticality of the asset or system in order to make informed security decisions.
References:
ISA/IEC 62443-3-2:2020 - Section 6.4
ISA/IEC 62443-2-1 - Section 4.3.2: Risk and business continuity alignment
NEW QUESTION # 142
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