Survey Security Aspects in Components and Architecture Local Search Engines

Nowadays, with burgeoning of computer networks and content on the internet, the demand is high for watching and searching contents like videos, music, files and documents and search engines, one of the factors that responds to the demands of the users and give them help to reach their goals faster. Also, the search engines, which have many advantages in the mistake design and configured components crawler, indexer and ranking, is malfunction that leads to the disclosure of confidential information users and websites, providing irrelevant and pollution results and non-secure search engines architecture. Therefore, considering the security problems and prospects components in the architecture of search engines, including local search engines is essential. The main parts that should guarantee their security in the architecture of local search engines is inclusion of the crawler (crawl policies, design factors, code injection attacks, crawler availability, crawler database), the indexer (search module, indexer database, indexing mechanisms, design factors) and the ranking (ranking policy, negative Search Engine Optimization (SEO)). The main topics of this article at first the threats and vulnerabilities main components in local search engines are studied, then requirements and security policies is provided for the three major components that leads to local search engines with secure architecture.