Tesco had to deactivate some customers' net accounts after their login names and passwords were shared online.
The list of more than 2,000 Tesco.com accounts was posted to a popular text-sharing site.
After knowing about the incident, Tesco immediately investigated the incident and notified all customers who were affected.
Source: https://www.bbc.com/news/technology-26171130
TPRM report: https://scoringcyber.rankiteo.com/company/-tesco
"id": "tes122441222",
"linkid": "-tesco",
"type": "Data Leak",
"date": "02/2014",
"severity": "50",
"impact": "2",
"explanation": "Attack limited on finance or reputation"{'affected_entities': [{'customers_affected': 'More than 2,000',
'industry': 'Retail',
'name': 'Tesco',
'type': 'Retailer'}],
'attack_vector': 'Credential Sharing',
'customer_advisories': 'Notified',
'data_breach': {'number_of_records_exposed': 'More than 2,000',
'type_of_data_compromised': ['Login Names', 'Passwords']},
'description': "Tesco had to deactivate some customers' net accounts after "
'their login names and passwords were shared online. The list '
'of more than 2,000 Tesco.com accounts was posted to a popular '
'text-sharing site. After knowing about the incident, Tesco '
'immediately investigated the incident and notified all '
'customers who were affected.',
'impact': {'data_compromised': ['Login Names', 'Passwords']},
'investigation_status': 'Investigated',
'response': {'communication_strategy': ['Customer Notification'],
'containment_measures': ['Account Deactivation']},
'title': 'Tesco Account Breach',
'type': 'Data Breach'}