When it comes to withdrawing popular cryptocurrencies like BTC, AAVE, and FIL, many people are debating what is the most secure method. The official withdrawal channel of a major exchange uses bank transfers through a physical bank in Bahrain, which generally takes 3 days to arrive, but you have to bear the exchange rate difference loss, and each transaction is limited to around 6.6k. It seems a bit unprofitable, but there is a benefit — you don't have to worry about receiving problematic funds through OTC trading, and a frozen card would be a real hassle. This is a trade-off: sacrificing some exchange rate and limit to gain peace of mind in risk control. Different people have different preferences, depending on how you view this calculation.