1. Notification is a detection control

Many account takeovers are caught not by a system but by a user who receives a “your password was changed” email they did not expect. Out-of-band notifications for security-relevant events — new logins, factor changes, permission grants, suspensions — turn the account holder into an alerting channel and shorten the time between a malicious change and a human response.

2. What to notify, and how

Useful notifications are specific, timely, and actionable: what changed, when, from where, and what to do if it was not you. They go to a channel the attacker does not control, and they avoid leaking more than the recipient needs. Over-notifying trains people to ignore them, so the signal must be reserved for events that genuinely warrant attention.

3. How B5 Secure handles it

B5 Secure emits notifications for security-relevant actions as part of the framework, so the alerting that good security depends on is a default rather than a per-project add-on — and it pairs with the structured telemetry that feeds detection and audit.