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Analysis on Internet Attack and Security

The rapid upgrading internet has brought to us many shortcuts and conveniences. Simultaneously, the underlying security problems have surfaced. These include unauthorized access, posing as legitimate users and destroyed data integrity, which interferes with the normal operation of the system. In addition, these computer network invasions are characterized by the focused attacking source, flexible attacking strategies and expanded scope of the attacked target. This paper analyzes the existing network security risks and means of invasion from various aspects; the network security defense measures are discussed here.