The largest data breach ever recorded by a significant Italian institution occurred when suspected hackers gained access to client data at UniCredit CRDI.MI, the country's largest lender.
This incident affected around 400,000 Italian customers.
The bank immediately tooked all necessary measures to prevent a repeat of such incident.
Source: https://www.reuters.com/article/us-cyber-unicredit-attack-idUSKBN1AB0QE
"id": "UNI174241022",
"linkid": "unicredit",
"type": "Data Leak",
"date": "07/2017",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"