CNN reports criminals launched a cyberattack against the Epilepsy Foundation last month that deliberately targeted epileptics.
They sent videos of flashing and strobing lights to people on the organization's Twitter account.
People with photosensitive epilepsy are sensitive to flashing lights or particular visual patterns that may trigger seizures.
The Foundation identified at least 30 different accounts participating in the calculated action.
One man sent the tweet to journalist Kurt Eichenwald, with the message: "You deserve a seizure for your post."
The fact that these attacks came during National Epilepsy Awareness Month only highlights their reprehensible nature. Allison Nichol, Director of Legal Advocacy Epilepsy Foundation
The Foundation was not able to say how many people were affected by the attacks.