Mayesh websites and mobile notifications are safe and will not harm your computer.
Accepting website or mobile notifications is safe and will not harm your computer.
Notifications are interactive alerts from apps and macOS that help keep you informed. For example, when you receive a FaceTime call or an invitation in Calendar, or when a software update is available, a notification appears in the top-right corner of the screen. Many notifications let you respond or take other actions right in the notification.
You can customize notifications or turn them off, in your Notifications settings. To view notifications in the Notification Center, click the date and time in the menu bar at the top of the screen.