Bitfinex - Withdrawal HOLD Vs Hacker

[tigerk6]

Hi,

If we change password on Bitfinex , it Hold your withdrawal for 5 days, this mean if I keep changing my password every 5th day my withdrawal will be keep holding.

The question are 

if my withdrawal is hold do hacker has any chance to hack my coins ?
is it 100% safe when withdrawal is HOLD?

Appreciate your input.