How safe is it to use winrar's password function to protect sensitive files

I was wondering how secure it was to protect files by placing them in a winrar archive protected by a password.
Assuming the password is long and complex enough to not be brute-forceable easily, are the files really safe? Or does winrar have breaches easy to exploit for a smart hacker?

submitted by /u/Chelonii64
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from hacking: security in practice https://ift.tt/o3bhA1i