Notification Categories are a mobile operating-system feature that groups alerts into separate channels or labels, such as messages, system updates, promotions, or app-specific notices. Instead of treating every alert the same, the device can organize notifications so the user can manage them more precisely, mute low-value items, or give important alerts higher priority.
In cybersecurity, this matters because notification clutter affects how people notice threats. A well-grouped notification system can make security warnings, login approvals, and account alerts easier to spot, while reducing the chance that they are buried under noisy app traffic. Attackers may also try to exploit notification systems by flooding users with deceptive prompts, hiding malicious activity inside ordinary-looking alerts, or using fake urgent notifications to trigger clicks. Defenders rely on categories and channels to separate trusted security alerts from less important messages and to limit the impact of spammy or suspicious app behavior.