What are the chances of misuse of Pledged shares by Brokers ? Anybody experienced it?

#1

Has anybody had bad experience or brokers misusing pledged shares ?

#2

Did this happen with you?

#3

Till now it didn’t happen to me, I have pledged my shares for collateral with Zerodha and it’s been 6 months. I was curious if any had issues with other brokerages.