Tracking Your Calendar & Schedule

Someone monitors your calendar, schedule, or booking apps to know where you'll be and when — including appointments, meetings, and social plans.

What You Might Notice

The other person shows up at events or appointments they shouldn't know about
They appear at places you only noted in your calendar.
They reference your schedule without you telling them
They mention meetings, appointments, or plans from your calendar.
Your calendar is shared with accounts you don't recognise
Check calendar sharing settings for unexpected connections.

What You Can Do

This is not an exhaustive list. Every situation is different — use what applies to yours.

Review calendar sharing settings
Check sharing settings on every calendar you use:
- Google Calendar — Settings > each calendar > Share with specific people
- Apple iCloud Calendar — iPhone: Calendar app > Calendars > (i) next to each shared calendar > Remove Person. Mac: Calendar > right-click calendar > Sharing Settings
- Microsoft Outlook / Microsoft 365 — Calendar > Share > Calendar Permissions (desktop), or Settings > Calendar > Shared calendars (Outlook on the web)
- Samsung Calendar, Proton Calendar, Fastmail, and others — look for "sharing", "collaborators", or "permissions" in calendar settings
Remove anyone unexpected.
Keep a separate private calendar
Use a different app or account for sensitive appointments — support services, legal consultations, etc.
Check which apps have access to your calendar
On your phone: Settings > Privacy > Calendar. Remove access for apps that don't need it.

ID: SAFE-T-0079

Sub-techniques: No sub-techniques

Tactic: Surveillance & Tracking

Created: 04 February 2026

Last Modified: 07 March 2026

Important: Always consider your physical safety first.

This resource provides general information, not personal advice. Every situation is different. The actions suggested here may not be safe in your specific circumstances particularly if the person causing harm could notice changes to your devices or accounts.

If you need personalised support, contact 1800RESPECT (1800 737 732) or your local specialist domestic violence service. If you are in immediate danger, call 000.

This framework is under active development. View full limitations & methodology.

Calendar/Schedule Surveillance

Accessing victim's calendar applications, booking systems, medical appointment portals, or work schedules to track movements and anticipate whereabouts. May exploit shared family calendars, compromised account access, or work systems to build a detailed picture of victim's routine.

ID: SAFE-T-0079

Sub-techniques: No sub-techniques

Tactic: Surveillance & Tracking

Created: 04 February 2026

Last Modified: 07 March 2026

Mitigations

ID	Mitigation
SAFE-M-0027	Calendar Sharing Audit Review and remove unauthorised calendar sharing permissions across all calendar applications.
SAFE-M-0028	Sensitive Appointment Isolation Use separate calendar on adversary-unknown account for sensitive appointments.
SAFE-M-0029	Medical Portal Security Change credentials on health portals. Remove adversary as authorised contact.

Detection Indicators

ID	Detection Indicator
SAFE-D-0026	Appointment Interception Adversary appears at calendar events they should not know about.
SAFE-D-0027	Schedule Knowledge Indicators Adversary references upcoming appointments before disclosure.
SAFE-D-0028	Active Calendar Sharing Audit reveals adversary retains calendar viewing access.

The TFA Matrix is a research framework under active development. Technique classifications, detection methods, and mitigations reflect current understanding and are subject to revision. This framework does not constitute forensic methodology, legal evidence standards, or clinical diagnostic criteria. Practitioners should apply professional judgement appropriate to their discipline and jurisdiction.

Full limitations, methodology & responsible use statement.