# T1640_account-access-removal

> Adversaries may interrupt availability of system and network resources by inhibiting access to accounts utilized by legitimate users.

- Skill: `cyberstrikeus/t1640-account-access-removal` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/t1640-account-access-removal`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/t1640-account-access-removal/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/t1640-account-access-removal

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# T1640 Account Access Removal

## High-Level Description

Adversaries may interrupt availability of system and network resources by inhibiting access to accounts utilized by legitimate users. Accounts may be deleted, locked, or manipulated (ex: credentials changed) to remove access to accounts.

## Kill Chain Phase

- Impact (TA0034)

**Platforms:** Android

## What to Check

- [ ] Identify if Account Access Removal technique is applicable to target mobile environment
- [ ] Check Android devices for indicators of Account Access Removal
- [ ] Verify mitigations are bypassed or absent (1 known mitigations)
- [ ] Assess detection coverage (1 detection strategies)

## How to Test

### Identify Attack Surface

Determine if the target mobile environment is susceptible to Account Access Removal by examining the target platforms (Android).

### Assess Existing Defenses

Review whether mitigations for T1640 are in place. If defenses are absent or misconfigured, this technique may be exploitable.

## Remediation Guide

### M1011 User Guidance

Users should be taught that Device Administrator permissions are very dangerous, and very few applications need it.

## Detection

### Detection of Account Access Removal

## Risk Assessment

| Finding                                     | Severity | Impact |
| ------------------------------------------- | -------- | ------ |
| Account Access Removal technique applicable | High     | Impact |

## CWE Categories

| CWE ID  | Title                             |
| ------- | --------------------------------- |
| CWE-400 | Uncontrolled Resource Consumption |

## References

- [MITRE ATT&CK Mobile - T1640](https://attack.mitre.org/techniques/T1640)