Paytm Mall suffers data breach, ransom demanded by hackers: Report
moneycontrol.com
moneycontrol.com
Seriously though, Paytm users have had to face fraud on their platform for so long (for instance, here: https://www.moneycontrol.com/news/business/all-you-need-to-k...) that I'm surprised they haven't got some steps in order already.
The weakest link in cybersecurity is the people though. And PayTM has a lot of them!