Quora

Quora, the popular question-and-answer website suffered a data breach incident after hackers broke into one of its systems and compromised information from approximately 100 million users.

The company discovered that a malicious third party had gained unauthorized access to one of its systems and compromised account information, including names, email addresses and encrypted passwords,

Some User-imported data from other social networks was also taken.

Source: https://www.databreaches.net/a-popular-qa-website-says-hackers-stole-information-on-100-million-users/

TPRM report: https://scoringcyber.rankiteo.com/company/quora

"id": "quo158301222",
"linkid": "quora",
"type": "Data Leak",
"date": "12/2018",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"

{'affected_entities': [{'customers_affected': 'Approximately 100 million users',
                        'industry': 'Technology',
                        'name': 'Quora',
                        'type': 'Company'}],
 'attack_vector': 'Unauthorized Access',
 'data_breach': {'number_of_records_exposed': 'Approximately 100 million',
                 'type_of_data_compromised': ['User account information',
                                              'Names',
                                              'Email addresses',
                                              'Encrypted passwords',
                                              'User-imported data from other '
                                              'social networks']},
 'description': 'Quora, the popular question-and-answer website suffered a '
                'data breach incident after hackers broke into one of its '
                'systems and compromised information from approximately 100 '
                'million users. The company discovered that a malicious third '
                'party had gained unauthorized access to one of its systems '
                'and compromised account information, including names, email '
                'addresses and encrypted passwords. Some user-imported data '
                'from other social networks was also taken.',
 'impact': {'data_compromised': ['User account information',
                                 'Names',
                                 'Email addresses',
                                 'Encrypted passwords',
                                 'User-imported data from other social '
                                 'networks']},
 'threat_actor': 'Malicious Third Party',
 'title': 'Quora Data Breach',
 'type': 'Data Breach'}