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HRM Framework 2.0 , home

SE-B-15Level 1 · Signal

Deletes suspicious mail without engaging

A vigilant behavior signal from email security: the person deleted a suspicious or simulated message without clicking, replying or opening attachments.

Classification

Risk domain One of 9 areas of human risk, from social engineering to readiness and response. Every signal belongs to one.
Dimension Every signal answers one of 3 questions.
Subject Who or what a signal is about: person, AI agent, vendor and organization.
Evidence level
Maturity practices One capability a program performs, scored on its own: See, Understand, Act, Prove, Govern and Culture.
Leads to The kind of breach the evidence beneath it points toward, each anchored to a Verizon DBIR or VERIS pattern or an FBI IC3 category.
NIST CSF 2.0
  • DE.AE-06
MITRE ATT&CK
  • T1566

The definition, in detail

Definition

It is safe behavior; a report would also protect other recipients.

Example

A designer deletes a simulated shared-document notice unread and moves on with her day.

How it is measured

Subject
Person
Event
phishing.simulation.deleted
Provenance
Framework research

How it is used

Programs count "Deletes suspicious mail without engaging" per person from Email security and read it beside the other Social engineering signals; it feeds 0 cohorts, 0 sequences and 1 breach scenario.

A "deletes suspicious mail without engaging" event is evidence of a protective behavior; a vigilant behavior at any step breaks a sequence. It is one event, and it does not cancel the risky signals the same person carries.

Technical mappings

NIST CSF 2.0
DE.AE-06
MITRE ATT&CK
T1566

Framework mappings; validate for your use case.

Library indicators

The detailed observations in the indicator library with the same risk domain, dimension and polarity as this signal.

Continue exploring

Cite this term

"Deletes suspicious mail without engaging" (SE-B-15), Human Risk Management Framework v2.0.0, Living Security, CC BY 4.0. https://www.humanriskmanagement.com/taxonomy/signals/se-b-15-deletes-suspicious-mail-without-engaging

Part of the open HRM Taxonomy, CC BY 4.0. Download the taxonomy as JSON · Version history. This page describes one signal.

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