Security?

I have an old macbook air that I sometimes used to upgrade for fun, but now I actually need to do it for work reasons, along with my accounts on it. Is it safe to put sensitive accounts on it?

Also, which version should I put on a macbook air mid 2013, i7 4650u, 8gb ram and 500gb ssd?

submitted by /u/Kitchen_Clothes2580
[link] [comments]