Giving false feedbacks

Cloud user feedbacks are the important source for assessing the reputation of the cloud service. But unknown attacks by malicious users may bring down the reputation of the service. This may be done by giving false feedbacks (i.e., Sybil attack). We identify the Sybil attack using this system.

5p hongnhan878 12-04-2019 20 0   Download

Unit 3: At home. Period 17: Lesson 4: Read I. Objectives: - After the lesson, Ss will be able to understand the safety precautions in the house and practice using Why - because. II. Preparation: - Textbook. III. Teaching procedure: 1. Organization: 2. Oral test: - Homework correction. 3. New lesson: A. Warm- up: Brainstorming: Drug electricy Danger in the home for children Boiling water knife Fire gas B. Presentation: * Pre- reading: - Teach some new words: a precaution a socket a match an object safety (to) destroy (to) injure + Checking: Slap the board.

4p chenxanh_1 20-09-2011 149 5   Download