Give some examples of the different illegal behaviours Phantom and Dirty both engage in.
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- Develop an attack tree (Section 1.5.2) for obtaining a meal in the Student Center food court without your account being charged. Remember that an attack tree is more useful the more paths it shows to get to the goal; yours should have at least three branches (i.e., high-level approaches) under the root. Given below is Section 1.5.2. 1.5.2 Attack trees for threat modeling Attack trees are another useful threat modeling tool, especially to identify attack vectors. A tree starts with a root node at the top, labeled with an overall attack goal (e.g., enter a house). Lower nodes break out alternative ways to reach their parent’s goal (e.g., enter through a window, through a door, tunnel into the basement). Each may similarly be broken down further (e.g., open an unlocked window, break a locked window). Each internal node is the root of a subtree whose children specify ways of reaching it. Subtrees end in leaf nodes. A path connecting a leaf node to the root lists the steps (attack vector)…Give some instances of the rules-breaking that both Phantom and Dirty engage in.1)In a social network, what access rights would you give to friends?What access rights would you give to the friends of your friends? How would your policy depend on the length of such a recommendation chain? 2)You are given a set of categories. Implement a lattice-based need-to-withhold policy where you selectively withdraw access rights from subjects.
- A bunch of people are living on an island, when a visitor comes with a strangeorder: all blue-eyed people must leave the island as soon as possible. There will be a flight out at 8:00pm every evening. Each person can see everyone else's eye color, but they do not know their own (nor is anyone allowed to tell them). Additionally, they do not know how many people have blue eyes, although they do know that at least one person does. How many days will it take theblue-eyed people to leave?Let’s say, you are given a task to identify the community which is severely infected by a virus such as Covid-19. As an environmental engineer, using the concepts of conditional probability, how can you develop a mathematical model to identify the infected community. Write all the parameters and show their relationships?There are many sensors on a wind turbine, based on each sensor's reading many alerts are generated as (start, end). For easier monitoring, our customer is asking to raise alerts on the turbine level instead of on each sensor. If any sensor is having an alert, there should be an alert for the entire wind turbine. Suppose the alerts created with two sensors readings are [(0,3),(5,10),(1,4),(10,15)], then the turbine level alert should be [(0,4),(5,15)]. Return the alerts sorted by the start timestamp. If there is no alert from the sensor level, return an empty array []. Code needs to be in Python?
- In a simulation study on cyber attacks, the researcher is interested to investigate on whether the attack(s) are successfully performed. Let A define the event that an attacker has successfully performed the attack. Let A’ denote the complement of event A. Define A’ in words.An attorney signed a legal document electronically and sends it to the client. Explain how the client will make sure that the document is signed by his lawyer and is not altered during the transition. You also want to make the document confidential for unauthorized people. Everything should be done in one go. (Note: You have to explain the use of cryptographic algorithms in the above scenario and the order they will be applied. Marks are graded based on the best precise solution)Using the diagram, orderthe first path correctly?
- What is the difference between a binary semaphore and a counting semaphore? Question 9 options: A binary semaphore is used for mutual exclusion, while a counting semaphore is used for synchronization. A binary semaphore can only take two values, while a counting semaphore can take any positive integer value. There is no difference between a binary semaphore and a counting semaphore. A binary semaphore is used for synchronization, while a counting semaphore is used for mutual exclusion.Convert the following NFA into a DFA. Follow the process described in the book and class. Present the final NFA without removing unreachable states or the epsilon transitions. Clearly label the initial and final states. E P₁ P₂ 0 1 1 P3 0,1Q2. Consider the library system below: When a visitor with a library card has found a book to borrow, the card is used to authenticate visitor identity. The visitor then scans the books in a machine for automatic registration. When all books have been registered for borrowing, a receipt is printed, and the status of the books will be updated in the system. Reminders about loans soon expiring or books not returned on time are sent out to the borrower daily. There is also a librarian who updates new releases of books. Based on the situation above, construct a context diagram and Level O DFD.