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

{% tabs %}
{% tab title="Principle" %}
[O4: Assure data security by design](https://safedpi.gitbook.io/safeguards/universal-dpi-safeguards-framework/principles/operational-principles/o4-assure-data-security-by-design)
{% endtab %}

{% tab title="Risk" %}
[RS2 Digital insecurity](https://safedpi.gitbook.io/safeguards/universal-dpi-safeguards-framework/risks/risks-to-safety)
{% endtab %}

{% tab title="Life Cycle Stage" %}
[L3: Development,](https://safedpi.gitbook.io/safeguards/universal-dpi-safeguards-framework/life-cycle-stages) [L5: Operations & Maintenance](https://safedpi.gitbook.io/safeguards/universal-dpi-safeguards-framework/life-cycle-stages)
{% endtab %}
{% 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>