A team from RBI is visiting HDFC Bank to identify the reasons behind the outage in online banking which inconvenienced thousands of the banks' customers for two days. “We are cognizant of the problem. It happened on December 2, and it was due to technical glitches. The net banking was restored on Tuesday,” said MK Jain deputy governor RBI on Thursday.

source https://timesofindia.indiatimes.com/business/india-business/rbi-team-to-visit-hdfc-bank-to-identify-source-of-online-banking-problems/articleshow/72385127.cms