t1636-protected-user-data

name	T1636_protected-user-data
description	Adversaries may utilize standard operating system APIs to collect data from permission-backed data stores on a device, such as the calendar or contact list.
category	information-gathering
version	18.1
author	cyberstrike-official
tags	["mitre-attack","mobile","t1636","collection","android","ios"]
technique_id	T1636
tactic	collection
all_tactics	["collection"]
platforms	["Android","iOS"]
mitre_url	https://attack.mitre.org/techniques/T1636
tech_stack	["android","ios"]
cwe_ids	["CWE-200"]
chains_with	["T1636.001","T1636.002","T1636.003","T1636.004","T1636.005"]
prerequisites	[]
severity_boost	{"T1636.001":"Chain with T1636.001 for deeper attack path","T1636.002":"Chain with T1636.002 for deeper attack path","T1636.003":"Chain with T1636.003 for deeper attack path"}

T1636 Protected User Data

High-Level Description

Adversaries may utilize standard operating system APIs to collect data from permission-backed data stores on a device, such as the calendar or contact list. These permissions need to be declared ahead of time. On Android, they must be included in the application’s manifest. On iOS, they must be included in the application’s Info.plist file.

In almost all cases, the user is required to grant access to the data store that the application is trying to access. In recent OS versions, vendors have introduced additional privacy controls for users, such as the ability to grant permission to an application only while the application is being actively used by the user.

If the device has been jailbroken or rooted, an adversary may be able to access Protected User Data without the user’s knowledge or approval.

Kill Chain Phase

• Collection (TA0035)

Platforms: Android, iOS

What to Check

• Identify if Protected User Data technique is applicable to target mobile environment
• Check Android devices for indicators of Protected User Data
• Check iOS devices for indicators of Protected User Data
• Verify mitigations are bypassed or absent (2 known mitigations)
• Assess detection coverage (1 detection strategies)

How to Test

Identify Attack Surface

Determine if the target mobile environment is susceptible to Protected User Data by examining the target platforms (Android, iOS).

Assess Existing Defenses

Review whether mitigations for T1636 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

Remediation Guide

M1006 Use Recent OS Version

OS feature updates often enhance security and privacy around permissions.

M1011 User Guidance

Users should be taught the danger behind granting unnecessary permissions to an application and should be advised to use extra scrutiny when an application requests them.

Detection

Detection of Protected User Data

Risk Assessment

Finding	Severity	Impact
Protected User Data technique applicable