In general, there are four things that affect how secure your password is: How long is it? Are the letters lowercase AND uppercase? Are there numbers too? And are there special characters, like an exclamation point?
Depending on what you use, your password could be hacked instantly... I just changed mine, we are required to every few months, and based on their chart... My new password would take 24 years. By then, I will have changed it numerous times, so I am safe. How safe are your passwords? Click Here to check the chart.