Hi,
I want to earn interest on my coins (BTC,ETH,LTC) therefore I prefer to leave these in Exchange for funding purpose, however I have No plan to sell or exchange with other coin in near future.
I always keep my withdrawal blocked by changing password every 5th day.
Is it 100% safe to keep crypto's in exchange like Bitfinex or others with withdrawal locked ?
Don't put your all funds in exchange, because you don't know what happened to your fund if exchanger have some problems. I was get goxxed by Mt.Gox back in 2014 when I trust this exchange so much and enjoy doing trade there. I put all bitcoin fund there and nothing come back until now.