Just that, really. Why would someone want to do this?
John Campbell’s vídeo today discuses this, and he says that the only reason he can see to do it is because the researchers are not sharing their progress as they go along. After all, if the information was freely available, what would be the point of stealing it?
Astra Zeneca have said they are going to supply the Oxford vaccine at cost - so do the hackers think they could manufacture it cheaper if they had the recipe? Or that they’ll get it sooner if they can make it themselves?
Do they want to pretend it was them that developed it?
Or - more darkly - do they want to disrupt the research and prevent a successful vaccine? Perhaps vaccinate them and their friends, but deny a vaccine to the rest of the world.
Your speculations, please.