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?
- Ad hoc networks rely heavily on broadcasting, which makes them vulnerable to eavesdropping.
- Routing protocols can be easily exploited to redirect traffic to malicious nodes.
- Routing protocols in ad hoc networks are inherently inefficient and prone to errors.
- The lack of a central authority makes it difficult to ensure the authenticity of routing information. (correct)
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?
- A malicious node attempts to overload the network by sending excessive data packets.
- A malicious node uses network vulnerabilities to bypass security measures and gain unauthorized access.
- A malicious node intercepts and modifies data between two legitimate nodes. (correct)
- A malicious node tries to gain access to the network by impersonating a legitimate device.
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?
- The vulnerability of pre-keying to traffic analysis attacks.
- The need for frequent key updates to prevent key compromise. (correct)
- The possibility of attackers exploiting known key weaknesses.
- The difficulty of managing and distributing encryption keys. (correct)
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?
What is the main vulnerability exploited in a 'buffer-overflow' attack?
What is the main vulnerability exploited in a 'buffer-overflow' attack?
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?
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?
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?
What does data integrity ensure regarding the data received?
What does data integrity ensure regarding the data received?
Which of the following best describes confidentiality?
Which of the following best describes confidentiality?
What is the primary purpose of nonrepudiation in electronic transactions?
What is the primary purpose of nonrepudiation in electronic transactions?
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?
Which traditional security issue involves protecting data from unauthorized alteration or manipulation?
Which traditional security issue involves protecting data from unauthorized alteration or manipulation?
What additional problem do mobile and wireless systems introduce to traditional security?
What additional problem do mobile and wireless systems introduce to traditional security?
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?
What is a major concern in terms of mobile and wireless security?
What is a major concern in terms of mobile and wireless security?
What distinguishes a DDoS attack from a DoS attack?
What distinguishes a DDoS attack from a DoS attack?
Which attack is designed to flood a local network with replies?
Which attack is designed to flood a local network with replies?
What does the exhaustion of battery resources entail?
What does the exhaustion of battery resources entail?
Which of the following attacks sends oversized ping packets to crash systems?
Which of the following attacks sends oversized ping packets to crash systems?
Why might mobile users not want their wireless systems to be detected?
Why might mobile users not want their wireless systems to be detected?
What is a consequence of physical interception (packet sniffing) in wireless systems?
What is a consequence of physical interception (packet sniffing) in wireless systems?
What problem arises from the detectability of wireless systems?
What problem arises from the detectability of wireless systems?
What issue does theft-of-service typically involve in a mobile context?
What issue does theft-of-service typically involve in a mobile context?
Flashcards
System Integrity
System Integrity
A system maintains its integrity by performing its intended functions flawlessly, without any unauthorized changes, intentional or accidental.
Data Integrity
Data Integrity
Data integrity ensures the receiver can verify the data hasn't been modified and that fake data cannot be substituted.
Confidentiality
Confidentiality
Confidentiality protects data access, ensuring only intended recipients can read it. It can be achieved through access controls or encryption.
Nonrepudiation
Nonrepudiation
Signup and view all the flashcards
Availability
Availability
Signup and view all the flashcards
Denial-of-Service Attack (DoS)
Denial-of-Service Attack (DoS)
Signup and view all the flashcards
Distributed Denial-of-Service (DDoS) Attack
Distributed Denial-of-Service (DDoS) Attack
Signup and view all the flashcards
Security Challenges in Mobile and Wireless Systems
Security Challenges in Mobile and Wireless Systems
Signup and view all the flashcards
DDoS Attack
DDoS Attack
Signup and view all the flashcards
SYN Flood Attack
SYN Flood Attack
Signup and view all the flashcards
Smurf Attack
Smurf Attack
Signup and view all the flashcards
Ping of Death Attack
Ping of Death Attack
Signup and view all the flashcards
Teardrop Attack
Teardrop Attack
Signup and view all the flashcards
Resource Depletion/Exhaustion
Resource Depletion/Exhaustion
Signup and view all the flashcards
Physical Intercept (Packet Sniffing)
Physical Intercept (Packet Sniffing)
Signup and view all the flashcards
Theft of service
Theft of service
Signup and view all the flashcards
Man-in-the-Middle Attack
Man-in-the-Middle Attack
Signup and view all the flashcards
Routing Spoofing
Routing Spoofing
Signup and view all the flashcards
Resource Exhaustion Attack
Resource Exhaustion Attack
Signup and view all the flashcards
Key Management
Key Management
Signup and view all the flashcards
Traffic Analysis
Traffic Analysis
Signup and view all the flashcards
Buffer Overflow Attack
Buffer Overflow Attack
Signup and view all the flashcards
Compromised Key
Compromised Key
Signup and view all the flashcards
Public Key Encryption
Public Key Encryption
Signup and view all the flashcards
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!
