How to transfer money to Poloniex?

Could you please elaborate on the steps required to transfer funds to Poloniex? I'm interested in knowing the specifics of the process, including the types of payment methods accepted, any fees associated with the transfer, and the estimated time frame for the funds to appear in my Poloniex account. Additionally, I would appreciate it if you could highlight any potential security measures I should take when making the transfer to ensure a SAFE and secure transaction.