Some of the user accounts of Telecom’s YahooXtrahas had their details compromised, following a security breach, which apparently affected non-Telecom customers as well.
Apparently, Yahoo acknowledged an email security breach that compromised some YahooXtra email accounts.
Source: https://www.databreaches.net/yahooxtra-email-accounts-compromised-following-security-breach/
TPRM report: https://scoringcyber.rankiteo.com/company/yahoo
"id": "yah228141222",
"linkid": "yahoo",
"type": "Breach",
"date": "01/2014",
"severity": "100",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"{'affected_entities': [{'industry': 'Telecommunications',
'name': 'YahooXtra',
'type': 'Email Service Provider'}],
'data_breach': {'type_of_data_compromised': ['Email account details']},
'description': 'Some of the user accounts of Telecom’s YahooXtrahad their '
'details compromised, following a security breach, which '
'apparently affected non-Telecom customers as well. Yahoo '
'acknowledged an email security breach that compromised some '
'YahooXtra email accounts.',
'impact': {'data_compromised': ['Email account details']},
'title': 'YahooXtra Email Security Breach',
'type': 'Data Breach'}