I found a vector graphic I want to use on a site A that offers free graphics under the Creative Commons License. Later I found that same graphic on a different (paid) site B, under their standard license (which does not allow distribution).
I assume there are two possibilities:
- Site A bought it from site B and put it under CC license
- Site B downloaded it from site A and put it up for sale on their site
In either case, can I safely download and use it from site A? Or is it my responsibility to always try to determine if something has a different license somewhere else?