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Someone blocks phone numbers, email addresses, or social media connections on your devices — so messages from friends, family, or services never reach you, and you don't know they tried.
What You Might Notice
People say they tried to contact you but you never received the messages
Friends, family, or services report messages and calls going unanswered.
You feel increasingly isolated without understanding why
People seem to have stopped reaching out, but they actually haven't.
Blocked contact lists on your phone contain numbers you didn't block
Check your device's blocked contacts list for unexpected entries.
What You Can Do
Regularly check your blocked contacts and email filters
Ask trusted people to test whether their messages reach you
A simple 'did you get my text?' check can reveal blocking.
Use a secondary contact method for critical relationships
Give key people an alternate way to reach you if your primary phone seems unreliable.
Important: 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. Always consider your physical safety first.
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.
Blocking victim's contacts or filtering their incoming communications without victim's knowledge or consent. Perpetrator may block specific people on victim's phone, set up email filters to auto-delete messages from support contacts, or manipulate device settings to prevent certain calls or messages from reaching victim.
Contact and Filter Audit Periodically check blocked contacts and email filter rules for unauthorised changes.
SAFE-M-0118
Alternative Contact Methods Maintain backup contact methods for key support people.
Detection Indicators
ID
Detection Indicator
SAFE-D-0105
Missing Inbound Communications Contacts report sending messages that were never received.
SAFE-D-0106
Unauthorised Blocked Contacts Contacts on blocked list that user did not block.
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.