CAN SOMEONE ATTACK ME SPIRITUALLY JUST BY THINKING ABOUT ME ON THEIR MIND
The base of spirituality is love, helping and oneness with God and so there is no space for hate, jealousy and attacking others.
In spiritualism one attends the power not in one year but after many many years of sadhana / disciplined dedication and devotion.
During their practice they are firstly taught to attend control over their panch indras ( 5 sensory organs like eye, ear, skin, longue and nose ) and their functions and then thoughts like moha / greed, maya / illusion, ghrena / hate, kam / sex, krodh / anger etc.
So one can now understand that a person to attend the spiritual power has to become neutral first and have all kind of detachments of the material world.
Once an individual attend that stage, then he only have love for people and helping for humanity with him and so even thru his spiritual power he can harm a person will not do it as his concious will restrict him to do so even if he has to lay down his life and this is call spiritualism.
Coming back to the root question, when someone attach by thinking, he actually attacks the chakras / energy points of the body. The thinking is in kind of manasik mantra chanted inside mind.
These mantras works in subtle / sukshma level and can travel faster than light.
But again people with such power will not do it as they will go against the Siddhant / principle given by their Gurus.
So a technically Yes answer can not happen because people of such power won’t do.