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Information Security Risk and Solution of Computer Network under Big Data Background

In this era of rapid information change, information security risks also follow. Due to the open computer network, computers often have some security problems in their daily use, which will not only leak the privacy of users, but also affect all the user’s property. Therefore, to ensure the safety of users of computer network information, the protection of computer network information security must be strengthened. This paper analyses the factors affecting computer network information security in the background of big data, analyses the common virus types, and proposes some countermeasures for the protection in the background of big data.