Hi , I am recently come to know one real incident about Binance who has frozen one of the account where money is deposited by sender in the amount of 11750 USD . I don't know about this news about true or false but there are some screenshot taken by user and posted somewhere in social media . 

This is sad if this kind of activity getting done by such big crypto exchange . One other user also wrote that 

Depending on the specific regional jurisdiction governing your account, Coinbase may classify your account as "dormant" if you have not initiated a transaction (buys, sells, deposits, or withdrawals) for 3 consecutive years.

Coinbase can keep your asset account as dormant if you not active from past Three years . if these statement are true then the trust and faith on crypto exchange is completely gone and i rethink about storing my crypto online on such big exchange .