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 # Changes to the ATT&CK/STIX Data Model

+## 25 April 2023 - ATT&CK Spec v3.1.0
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+Changes to ATT&CK in STIX for April 2023 ATT&CK Content Release (ATT&CK v13.0)
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+* Restored the `labels` property for ICS mitigation objects. This property documents security controls for ICS mitigations.
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 ## 25 October 2022 - ATT&CK Spec v3.0.0

 Changes to ATT&CK in STIX for October 2022 ATT&CK Content Release (ATT&CK-v12.0)