A series of database misconfigurations publicly exposed the personal information and private messages of more than 100 million dating website and mobile app account holders.

Independent VPN review site WizCase has reported finding six separate dating sites or apps that each potentially compromised thousands of users due to improper data storage. According to WizCase researchers, the vast majority of the affected accounts belong to Japanese dating sites Charincharin.net and kyuun-kyuun.com, which share the same database.

Collectively, the two websites exposed data related to 102 million accounts, including email addresses, mobile device information and search preferences, WizCase said in a blog post. "Every server was easily accessible via the internet and not password protected," the report stated.

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