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CONTAP-581570: ARP.AI generating frequent false positives for .txt.pgp files

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ontap-9
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Issue

Continuous alerts for .txt.pgp files are being generated even after marking them as false positive following the cluster upgrade to version 9.16.1P6. Additionally, these alerts are grouped under NO_EXTN in System Manager.
EMS: 
 [node1: svc_queue_thread: callhome.arw.activity.seen:alert]: Call home message for POSSIBLE RANSOMWARE ACTIVITY DETECTED, Volume: Vol1 (UUID: 12c45e51-xxxx-xxxx-xxxx-00a098f4009e) in Vserver: svm1 (UUID: 12c45e51-xxxx-xxxx-xxxx-00a098f4009e)

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