Scatter search
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Scatter search (SS) is a methodology introduced in 1977 to generate solutions to optimization problems. It uses a reference set of solutions that are systematically combined and improved upon, unlike random combination in genetic algorithms. SS builds and maintains a reference set of the best b solutions. It generates new combined solutions by applying subset generation and solution combination methods to the reference set. Path relinking is an important extension of SS that transforms solutions into others.
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Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
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- Exploiting IAM PassRole Misconfiguration
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- Steps:
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- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
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- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
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一比一原版(CalArts毕业证)加利福尼亚艺术学院毕业证如何办理
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Scatter search
- 2. The scatter search (SS) methodology was first introduced in 1977 by Fred Glover and extensive contribution have been made by Manuel Laguna. Glover described the scatter search as a method that uses a succession of coordinated initializations to generate solutions. He introduced the reference set (RefSet) of solutions. The search takes place in a systematic way as oppose to the random designs of other methods such as Genetic Algorithm. Glover et al. (1995) described SS as a link between early Tabu Search and Genetic Algorithm ideas.
- 3. The book by Laguna and Marti (2003) covers standard implementations of basic and advanced SS designs. They introduce C code that implements both basic and advanced search mechanism. http://www.uv.es/~rmarti/scattersearch The above website consists of the researches that have been implemented based on SS. Path Relinking (PR) methodology is an important extension of SS.
- 4. SS and PR published paper
- 5. Number of SS publications Number of search results
- 6. Basic Scatter search design 1. A diversification generating method to generate a collection of diverse trial solutions, using an arbitrary trial solution as an input. 2. An improvement method to transform a trial solution into one or more enhanced trial solutions. 3. A reference set update method to build and maintain a reference set consisting of the b “best” solutions (b is no more than 20).
- 7. 4. A subset generation method to operate on a reference set, to produce a subset of its solutions as a basis for creating combined solutions. 5. A solution combination method to transform a given subset generation method into one or more combined solution vectors.
- 8. Basic scatter search procedure
- 10. References Glover, F., 1977. heuristics for integer programming using surrogate constraints. Decision Sineces 8, 156-166. Glover, F., 1995. scatter search and star paths: Beyond the genetic metaphor. OR spektrum 17, 125-137. Laguna, M., Marti, R., 2003. Scatter Search Methodology and implementations in C. Kluwer Academic Publishers. Marti, R., 2006. Scatter Search-Wellsprings and Challenges. European Journal of Operational Research 169, 351-358. Marti, R., Laguna, M., Glover, F., 2006. Principles of scatter search. European Journal of Operational Research 169, 359-372.