The only secure browser would be one that is not running. All browsers send and receive information so by design are not secure.
There are hijacks, exploits and more that try to SCARE you into downloading this or that but we know that no computer is absolutely secure unless encased in a few feet of steel reinforced concrete.
OK, I'm going too far but you see the issue. Anyone, any site can declare "this" is not secure.
-> There's always other browsers so why not?
Since my Mac Book pro is said to be unable to support new
O.S.,what about older one-such as Wolf. Hardware is 10.5.8?