OAT-020 Account Aggregation

Account Aggregation is an automated threat. The OWASP Automated Threat Handbook - Web Applications (pdf, print), an output of the OWASP Automated Threats to Web Applications Project, provides a fuller guide to each threat, detection methods and countermeasures. The threat identification chart helps to correctly identify the automated threat.


OWASP Automated Threat (OAT) Identity Number


Threat Event Name

Account Aggregation

Summary Defining Characteristics

Use by an intermediary application that collects together multiple accounts and interacts on their behalf.

Indicative Diagram

Indicative diagram for OAT-020


Compilation of credentials and information from multiple application accounts into another system. This aggregation application may be used by a single user to merge information from multiple applications, or alternatively to merge information of many users of a single application. Commonly used for aggregating social media accounts, email accounts and financial accounts in order to obtain a consolidated overview, to provide integrated reporting and analysis, and to simplify usage and consumption by the user and/or their professional advisors. May include making changes to account properties and interacting with the aggregated application’s functionality.

For other forms of data harvesting, including the distribution of content, see OAT-011 Scraping. For hastening progress, see OAT-006 Expediting instead.

Other Names and Examples

Aggregator; Brokering; Client aggregator; Cloud services brokerage; Data aggregation; Financial account aggregator; Intermediarisation; Intermediation

See Also


CAPEC Category / Attack Pattern IDs

  • 167 Lifting Sensitive Data from the Client
  • 210 Abuse of Functionality

CWE Base / Class / Variant IDs

  • 799 Improper Control of Interaction Frequency

WASC Threat IDs

  • 21 Insufficient Anti-Automation
  • 42 Abuse of Functionality

OWASP Attack Category / Attack IDs

  • Abuse of Functionality

Return to OWASP Automated Threats to Web Applications Project.