Cyber research firm Cyble has claimed that Paytm has suffered a massive data breach after cybercriminals targetted digital payments giant’s PayTM mall database. Paytm, however, has denied any data breach. The attackers are demanding a ransom of 10 Ethereum cryptocurrency ($4000). Hacker group John Wick, which hacks databases under the pretext of offering help to fix bugs in systems, is said to be behind the breach.

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