Which of the IEC 62443 Security Levels is identified by a cybercrime/hacker target?
IEC 62443 is an international series of standards on Industrial communication networks and system security, specifically related to Industrial Automation and Control Systems (IACS). Within the IEC 62443 standards, Security Level 3 is defined as protection against deliberate or specialized intrusion. It is designed to safeguard against threats from skilled attackers (cybercriminals or hackers) targeting specific processes or operations within the industrial control system. Reference:
International Electrotechnical Commission, 'IEC 62443 Standards'.
Which of the following are required functions of information management?
Information management within the context of network security involves several critical functions that ensure data is correctly handled for security operations. These functions include:
Normalization: This process standardizes data formats from various sources to a common format, making it easier to analyze systematically.
Correlation: This function identifies relationships between disparate pieces of data, helping to identify patterns or potential security incidents.
Data enrichment: Adds context to the collected data, enhancing the information with additional details, such as threat intelligence.
All these functions are essential to effective information management in security systems, allowing for more accurate monitoring and faster response to potential threats.
Reference
'Data Enrichment and Correlation in SIEM Systems,' Security Information Management Best Practices.
'Normalization Techniques for Security Data,' Journal of Network Security.
The vulnerability that led to the WannaCry ransomware infections affected which protocol?
WannaCry is a ransomware attack that spread rapidly across multiple computer networks in May 2017.
The vulnerability exploited by the WannaCry ransomware was in the Microsoft Windows implementation of the Server Message Block (SMB) protocol.
Specifically, the exploit, known as EternalBlue, targeted a flaw in the SMBv1 protocol. This flaw allowed the ransomware to spread within corporate networks without any user interaction, making it one of the fastest-spreading and most harmful cyberattacks at the time.
Reference
National Vulnerability Database, CVE-2017-0144: https://nvd.nist.gov/vuln/detail/CVE-2017-0144
Which component of the IT Security Model is attacked with masquerade?
A masquerade attack involves an attacker pretending to be an authorized user of a system, thus compromising the authentication component of the IT security model. Authentication ensures that the individuals accessing the system are who they claim to be. By masquerading as a legitimate user, an attacker can bypass this security measure and gain unauthorized access to the system. Reference:
William Stallings, 'Security in Computing'.
Which of the following was attacked using the Stuxnet malware?
Stuxnet is a highly sophisticated piece of malware discovered in 2010 that specifically targeted Supervisory Control and Data Acquisition (SCADA) systems used to control and monitor industrial processes.
The primary targets of Stuxnet were Programmable Logic Controllers (PLCs), which are critical components in industrial control systems.
Stuxnet was designed to infect Siemens Step7 software PLCs. It altered the operation of the PLCs to cause physical damage to the connected hardware, famously used against Iran's uranium enrichment facility, where it caused the fast-spinning centrifuges to tear themselves apart.
Reference
Langner, R. 'Stuxnet: Dissecting a Cyberwarfare Weapon.' IEEE Security & Privacy, May-June 2011.
'W32.Stuxnet Dossier,' Symantec Corporation, Version 1.4, February 2011.
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