This one exchange has various features that are beneficial for users in trading. Keep in mind, because this exchange has been hacked twice. Be sure to use this exchange, you understand the security mechanisms provided, and know all risks if you use this platform. Stay selective and be careful when buying Bitcoin on Bitfinex so you can feel the benefits and conveniences provided by this platform. Bitfinex was hacked in August 2016 and lost 120,000 BTC. That happens because the attacker is able to exploit vulnerabilities in the Bitfinex and BitGo multisig wallet architecture. They have recently upgraded their security architecture, posting no hacks / attacks on this exchange.