A former staff member at Withybush Hospital inappropriately accessed electronic patient hospital records.
That individual is no longer employed by Hywel Dda after breaching patient confidentiality.
All patients affected have been contacted and offered the opportunity to discuss the situation with the health board.
"id": "HYW24824522",
"linkid": "hywel-dda-university-health-board",
"type": "Breach",
"date": "01/2018",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"