Hello,
I'm an old SL player but I'm just discovering copybot.
browsing the forum I saw a lot of thread talking about ban but I can't find a post concerning the causes of ban.
So I'm not sure...
Is it safe to use copybot to copy items ? import them ?
Which precautions should I take ?
What behaviour can cause a ban ?

Thk you for your answer and sorry if it's already asked several times

Newbies cant give REPs, but you can give me REPs if you grow in rank.

Just some extra tip:
I just found out that there is evidence left behind when you use a CopyBot viewer:

Theoratically if LindenLab finds no evidence of copybotting, they can still ban you if they consider these folders evidence of using a copybot viewer.

thk you for the extra tip !
Seems logical, I never use darkstorm with my main avatar

There is always a risk of being banned from Copy botting. Don't be fooled 

You certainly can use a root prim to change the name of the creator. 
But that doesn't hide the uploader on closer inspection. 
Ultimately you need payment info on file to upload anything: so it will always come back to you. However, Lindens do not actively look for copybotting this is simply a DCMA issue for them. 

Our greatest adversaries are our fellow SL Residents especially those who use HUDS such as "What's She Wearing" Link Below

[To see links please register here]

. Those no-good self-appointed do-gooders are the first to rat out a fellow CopyBotter to the Labs and you will be banned. 
Secondly; any variation in your viewer that alerts those pesky white-knights and Nosy EM managers who ban you from a sim or region and subsequently to LL. 

Having said all of that - Use an alt to upload - Use an alt to Download - Don't loiter anywhere to long - And be secretive and stealthy like a ninja and you will be fine.