# O4.5 Implement data validation, completeness, and consistency checks

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{% tab title="Principle" %}
[O4: Assure data security by design](../principles/operational-principles/o4-assure-data-security-by-design)
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{% tab title="Risk" %}
[RS2 Digital insecurity](../risks/risks-to-safety)
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{% tab title="Life Cycle Stage" %}
[L3: Development,](../life-cycle-stages) [L5: Operations & Maintenance](../life-cycle-stages)
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{% endtabs %}

## Practices

> Implement robust data validation and backup by ensuring data integrity and authenticity through advanced methods. This can be done via:
>
> * Regular data backups
> * Advanced validation methods
> * Completeness and consistency checking
> * Use of cryptographic signatures for data authenticity

## Resources

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td>References</td><td></td><td></td></tr></tbody></table>
