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ServiceNow & IOT Security Interview Questions 2024

What is IoT security?

  • IoT security refers to the processes, tools, and strategies for securing physical Internet of Things devices and the networks they connect to.

Why is IoT security important?

  • IoT security is crucial because each connected device can be a potential access point for cybercriminals, risking unauthorized access to sensitive networks.

What are some examples of IoT devices?

  • Examples include fitness trackers, IP cameras, smart thermostats, and connected home appliances.

How do IoT worms threaten IoT security?

  • IoT worms are malicious software that self-replicate and spread throughout networks, taking control of uninfected systems.

What are IoT botnets used for?

  • IoT botnets are often used to launch distributed denial-of-service (DDoS) attacks by infecting collections of compromised IoT devices.

Describe IoT ransomware.

  • IoT ransomware allows cybercriminals to lock IoT devices and demand payment from authorized users to unlock them.

What is a man-in-the-middle (MitM) attack in the context of IoT?

  • A MitM attack involves a hacker positioning themselves between an IoT device and the network to eavesdrop on communications.

How does firmware hijacking occur in IoT?

  • Firmware hijacking occurs when cybercriminals trick users into downloading fake firmware updates that link to malicious websites.

What is API security in IoT?

  • API security involves validating and sanctioning data movement between applications and backend systems to ensure secure information exchange.

How do IoT security gateways work?

  • IoT security gateways provide an additional defense layer by deploying barriers, such as firewalls, between devices and networks.

What is Network Access Control (NAC)?

  • NAC creates an inventory of all IoT devices on a network, helping monitor and respond to anomalies effectively.

Explain the importance of network security in IoT.

  • Network security is vital because many IoT attacks aim to access private networks, requiring both digital and physical security measures.

What role does patch management play in IoT security?

  • Patch management involves regularly updating IoT devices to address known vulnerabilities and enhance security.

What is PKI authentication?

  • PKI (Public Key Infrastructure) uses a two-key asymmetric cryptosystem to encrypt and decrypt IoT data, enhancing security.

Why is segmentation important in IoT security?

  • Segmentation involves separating IoT devices into their own networks to monitor them closely and prevent unauthorized access to the primary network.

What challenges do organizations face in achieving IoT security?

  • Challenges include lack of visibility, massive attack surfaces, difficult integration, open-source software vulnerabilities, data overload, weak user credentials, and insufficient computing power.

How can businesses prioritize IoT security risks?

  • Businesses should focus on devices that connect to sensitive networks or handle valuable data, applying security resources where most needed.

What is device discovery in IoT security?

  • Device discovery involves creating a detailed inventory of all devices on a network to identify and secure each one.

Why are strong user-credentials policies important for IoT security?

  • Strong policies ensure that devices have robust passwords, reducing the risk of unauthorized access through weak credentials.

How should organizations handle IoT device updates?

  • Organizations should regularly check for and apply security patches from device manufacturers to keep IoT devices secure.

What is the role of real-time network monitoring in IoT security?

  • Real-time monitoring helps identify anomalous behavior from IoT devices, even if the devices themselves cannot be monitored constantly.

How does ServiceNow contribute to IoT security?

  • ServiceNow provides tools for transparency, real-time device health updates, and advanced automation to manage and secure IoT devices through its Now Platform®.

What is the significance of API security in IoT networks?

  • API security ensures that only authorized devices and users can exchange information, protecting against unauthorized data access.

Describe the concept of IoT segmentation.

  • IoT segmentation isolates IoT devices into separate networks, limiting their access to sensitive systems and enabling better monitoring.

What are the benefits of using IoT security gateways?

  • Gateways provide an additional defense layer, deploying firewalls and other barriers to prevent cybercriminals from exploiting compromised devices.

What is the impact of weak user credentials on IoT security?

  • Weak credentials, such as default passwords, can be easily exploited by attackers, compromising IoT devices and the networks they connect to.

How does ServiceNow Security Incident Response help in IoT security?

  • It offers tools for incident response, real-time updates, and automation to manage security incidents and maintain IoT security posture.

Why is it important to monitor IoT network activity constantly?

  • Continuous monitoring helps detect and respond to suspicious activities originating from IoT devices, protecting the network from potential threats.

What challenges does open-source software pose for IoT security?

  • Open-source software may have publicly available code that attackers can exploit to find vulnerabilities.

How can organizations address the issue of shadow IT in IoT security?

  • Implementing strict policies and monitoring for unauthorized devices can help manage and secure IoT devices deployed without the IT department’s knowledge.

What are IoT security worms, and how do they operate?

  • IoT security worms are self-replicating malicious software that spreads through networks, taking control of uninfected systems.

How does firmware hijacking affect IoT devices?

  • Firmware hijacking misleads users into downloading malicious updates, compromising the device’s security.

What role does PKI play in enhancing IoT security?

  • PKI provides a cryptographic framework for secure communication and data exchange, using digital certificates to authenticate devices and users.

Why is it challenging to integrate new IoT devices with existing security solutions?

  • New IoT devices may have compatibility issues with existing security tools, making it difficult to ensure comprehensive protection.

What is the significance of patch management in IoT security?

  • Regular patching and updating of IoT devices help address known vulnerabilities, reducing the risk of exploitation.

How can businesses mitigate the risks associated with IoT devices?

  • Businesses can mitigate risks by prioritizing security resources, enforcing strong credential policies, and maintaining regular updates and monitoring.

What are the consequences of unmanageable data loads in IoT security?

  • Excessive data from numerous IoT devices can overwhelm systems, making it difficult to manage and secure effectively.

Why is segmentation recommended for IoT devices?

  • Segmentation limits IoT devices’ access to the main network, allowing for closer monitoring and quicker identification of suspicious behavior.

How can ServiceNow’s Connected Operations improve IoT security?

  • It provides tools for real-time device health updates, incident response, and automation to manage IoT security efficiently.

What is the impact of insufficient computing power on IoT security?

  • Limited computing power in IoT devices can hinder the integration of essential security software, leaving them vulnerable to attacks.

What are the top IoT security threats businesses face?

  • The top threats include IoT worms, botnets, ransomware, man-in-the-middle attacks, and firmware hijacking.

Why is visibility crucial for IoT security?

  • Visibility allows organizations to account for all connected devices, ensuring comprehensive monitoring and risk management.

What challenges does shadow IT present in IoT security?

  • Shadow IT involves unauthorized IoT devices on networks, making it difficult for IT departments to monitor and secure all access points.

How do IoT security gateways enhance network security?

  • They provide an additional defense layer by deploying firewalls and other barriers to prevent cybercriminals from exploiting compromised devices.

What is the role of strong user-credentials policies in IoT security?

  • Strong policies ensure that devices have robust passwords, reducing the risk of unauthorized access through weak credentials.

How can regular updates improve IoT security?

  • Regular updates address known vulnerabilities, enhancing the security of IoT devices and networks.

Why is constant monitoring of IoT network activity important?

  • Continuous monitoring helps detect and respond to suspicious activities originating from IoT devices, protecting the network from potential threats.

What are the benefits of using ServiceNow for IoT security?

  • ServiceNow offers tools for transparency, real-time updates, incident response, and automation to manage and secure IoT devices effectively.

How does API security protect IoT networks?

  • API security ensures that only authorized devices and users can exchange information, protecting against unauthorized data access.

What best practices should organizations follow for IoT security?

  • Best practices include prioritizing risk, using device discovery, enforcing strong credential policies, regularly updating devices, and monitoring network activity.

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