Today i decided to take a walk at pixiv but then i stumbled at very familiar thumbnail which is one of my Exia ([link]), that's weird as i never submitted this one so i clicked it and found that it was submitted by someone else [link] (login needed) and not just Exia but also my Hi-Nu ([link]) as well, at first i thought it probably just another "hey i found this pict at" submission but apparently not, as s/he remove the insignia i put on the bottom right and when i put his/her comment at google translate this is what comes out

"I draw the other Gundam! Perhaps ・ ・ ・. East will now"

This event is quite surprising, thought i honestly say that i'm not really angered with this as what s/he did is simply stole a picture. To prevent a real art thievery it's important to put insignia not on your picture but within your own style, but the best way off course is by preserving it like submitting it at Deviantart, that way the submission date will be noted and it'll be clear who's the first.