Podcast
Questions and Answers
What is the primary concern regarding routing in ad hoc networks from a security perspective?
What is the primary concern regarding routing in ad hoc networks from a security perspective?
What is the central idea behind the 'man in the middle' attack in the context of ad hoc networks?
What is the central idea behind the 'man in the middle' attack in the context of ad hoc networks?
Which of the following security risks are directly related to the use of pre-keying in ad hoc networks?
Which of the following security risks are directly related to the use of pre-keying in ad hoc networks?
How does 'traffic analysis' compromise the security of ad hoc networks even without decrypting data?
How does 'traffic analysis' compromise the security of ad hoc networks even without decrypting data?
Signup and view all the answers
What is the main vulnerability exploited in a 'buffer-overflow' attack?
What is the main vulnerability exploited in a 'buffer-overflow' attack?
Signup and view all the answers
What is the most significant security issue associated with ad hoc networks in comparison to traditional networks?
What is the most significant security issue associated with ad hoc networks in comparison to traditional networks?
Signup and view all the answers
Which of the following is NOT a security concern related to ad hoc networks?
Which of the following is NOT a security concern related to ad hoc networks?
Signup and view all the answers
Which of the following is a potential consequence of a successful 'man in the middle' attack in an ad hoc network?
Which of the following is a potential consequence of a successful 'man in the middle' attack in an ad hoc network?
Signup and view all the answers
What does data integrity ensure regarding the data received?
What does data integrity ensure regarding the data received?
Signup and view all the answers
Which of the following best describes confidentiality?
Which of the following best describes confidentiality?
Signup and view all the answers
What is the primary purpose of nonrepudiation in electronic transactions?
What is the primary purpose of nonrepudiation in electronic transactions?
Signup and view all the answers
What is a common form of attack that poses a risk to system availability?
What is a common form of attack that poses a risk to system availability?
Signup and view all the answers
Which traditional security issue involves protecting data from unauthorized alteration or manipulation?
Which traditional security issue involves protecting data from unauthorized alteration or manipulation?
Signup and view all the answers
What additional problem do mobile and wireless systems introduce to traditional security?
What additional problem do mobile and wireless systems introduce to traditional security?
Signup and view all the answers
What security issue is characterized by unauthorized persons being able to block legitimate users from accessing resources?
What security issue is characterized by unauthorized persons being able to block legitimate users from accessing resources?
Signup and view all the answers
What is a major concern in terms of mobile and wireless security?
What is a major concern in terms of mobile and wireless security?
Signup and view all the answers
What distinguishes a DDoS attack from a DoS attack?
What distinguishes a DDoS attack from a DoS attack?
Signup and view all the answers
Which attack is designed to flood a local network with replies?
Which attack is designed to flood a local network with replies?
Signup and view all the answers
What does the exhaustion of battery resources entail?
What does the exhaustion of battery resources entail?
Signup and view all the answers
Which of the following attacks sends oversized ping packets to crash systems?
Which of the following attacks sends oversized ping packets to crash systems?
Signup and view all the answers
Why might mobile users not want their wireless systems to be detected?
Why might mobile users not want their wireless systems to be detected?
Signup and view all the answers
What is a consequence of physical interception (packet sniffing) in wireless systems?
What is a consequence of physical interception (packet sniffing) in wireless systems?
Signup and view all the answers
What problem arises from the detectability of wireless systems?
What problem arises from the detectability of wireless systems?
Signup and view all the answers
What issue does theft-of-service typically involve in a mobile context?
What issue does theft-of-service typically involve in a mobile context?
Signup and view all the answers
Study Notes
CSY450. Pervasive Computing - Lecture 6: Security Issues
- Lecture presented by Heba KH. Ahmed, Ph.D., Associate Professor, Computer Systems Department, Faculty of Computer & Information Science
- Agenda items include Security, Traditional Security Issues, Mobile and Wireless Security Issues, and Ad Hoc Networks Security Issues
Traditional Security Issues
- Integrity: System integrity means a system performs its intended function without unauthorized interference. Data integrity means data hasn't been altered after transmission.
- Confidentiality: Only intended recipients can access data, secured through mechanisms like encryption.
- Nonrepudiation: The sender cannot deny sending the data, vital for e-commerce.
- Availability: Systems and resources should be accessible to authorized users. Denial-of-service (DoS) attacks interfere. Distributed DoS (DDoS) involves multiple machines flooding a target with traffic, causing unavailability.
Mobile and Wireless Security Issues
-
Detectability: Wireless signals are easily detectable; this is a concern for mobile device security.
- Mobile users often don't want their systems identified.
- Limited Resources: Mobile devices have limited processing power, storage, and battery life, impacting security measures.
- Interception: Wireless transmissions are vulnerable to interception; encryption is essential.
- Theft-of-service: A user might connect to a network mistakenly believing they are connecting to the desired network.
Ad Hoc Networks Security Issues
- Networks established without a fixed infrastructure.
- Data often passes through multiple intermediate devices.
- Man-in-the-middle attacks: A malicious device can place itself in the path of communication and manipulate or eavesdrop on the exchange.
- Routing issues: Spoofing (impersonation) is a risk. Key routing nodes can be disabled through resource-exhaustion attacks.
- Pre-keying Management: Key creation, distribution, storage, and revocation require careful management to maintain secure encryption/authentication processes. Compromised keys should be replaced to prevent exposure. High cost protocols may not be suitable for many applications. Public key encryption can help avoid key exchange
Additional Common Attacks
- Traffic analysis: Attackers can interpret data exchange even without decryption by analyzing data patterns. Examples include increased pizza deliveries to a location before a military action.
- Buffer-overflow attacks: A program tries to put more data into a buffer than it was designed to hold and this data can alter or harm the system.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz focuses on security issues discussed in Lecture 6 of CSY450 Pervasive Computing. Topics include traditional security issues such as integrity, confidentiality, nonrepudiation, and availability, as well as mobile and wireless security concerns. Test your understanding of these critical concepts related to computer security!
