Spotting on plants

[sewagner86]

A friend and i recently got some orchids shipped to us. I had 1 previous shipment the week before. I have oncidiums and a cattleya and she has 1 oncidium and a Vanda. All are fairly small plus sized plants. She messaged me and sent some pictures of her 2 and said they have black spots and she fears it could be mold. I haven't seen what she has seen on any of mine although I do have tiny pin sized spots on some of my oncidiums. I will attach pictures. Any reason for concern? What should we look for?

Thanks for any advice.