This event is triggered by a PC rolling a fail when making a Knowledge Test on The Net. Their digging around has attracted the attention of… something. In the corner of their retinal device, they see some sort of demonic entity [haggish / wicked smile / strangely familiar] looking at them. She flies straight at them before they are ejected from the system.
In the days that follow, they see her out of the corner of their eye during stressful moments, adding to the difficulty of their tests. When they sleep [fitful / feverish], they dream she is perched nearby, watching them. They are paralyzed in this dream but can hear her voice. She keeps calling them…
They’ll have to do some work to see what she wants and how to get rid of her.