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In enterprise information security, how many years does information security planning usually include?

The following is the number of years usually included in information security planning in enterprise information security.

1, and the protection period of the primary information system is one year.

2. The protection period of the secondary information system is two years.

3. The protection period of the three-level information system is three years.

4. The protection period of the four-level information system is four years.

5. The protection period of the five-level information system is five years.

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