This is exactly why people need to stop blaming nulled resources whenever a website gets hacked/exploited. One of my websites was using a nulled theme and was later attacked by some azzhole using a (RFI) remote file inclusion attack. He dropped a shell onto my server using the theme's

code. He then tried adding more malicious files but my hosting provider blocked all attempts and the "hacker" gave up to bother someone else.
After, I go to the theme's Envato Themeforest page and look at the log to realize that the theme was last updated the day prior. Apparently the theme creator had to update the theme files because his buyer's we're complaining to him about their sites getting hacked because his code was easily exploitable.
Nothing to do with
nulled themes versus
purchased themes. Just simply a garbage coded theme. Glad I didn't actually pay for it

And for the most part I trust Babiato uploaders who are nice enough to share files, but sometimes I also like to purchase themes when I have enough money and want to support the theme creator. However if your client is paying you to setup a website for them, don't use a nulled theme. Give them what they pay for. My opinion