Indian shopping website Groupon leaks Email/Passwords of 300,000 Users. SoSasta.com leak the e-mail addresses and plain-text passwords. Groupon.com offers its services in 11 cities – Kolkata, Hyderabad, Pune, Ahmedabad, Delhi/NCR, Chandigarh, Jaipur, Nagpur, Mumbai, Chennai and Bengaluru – and has mailed customers stating that they were made aware of a security breach. None of your financial information (Credit Card, Debit Card, NetBanking etc) has been compromised.
Source: https://thehackernews.com/2011/06/indian-shopping-website-groupon-leaks.html