OAT-007 Credential Cracking

Credential Cracking 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

Credential Cracking

Summary Defining Characteristics

Identify valid login credentials by trying different values for usernames and/or passwords.

Indicative Diagram

Indicative diagram for OAT-007


Brute force, dictionary (word list) and guessing attacks used against authentication processes of the application to identify valid account credentials. This may utilise common usernames or passwords, or involve initial username evaluation.

The use of stolen credential sets (paired username and passwords) to authenticate at one or more services is OAT-008 Credential Stuffing.

Other Names and Examples

Brute-force attacks against sign-in; Brute forcing log-in credentials; Brute-force password cracking; Cracking login credentials; Password brute-forcing; Password cracking; Reverse brute force attack; Username cracking; Username enumeration

See Also


CAPEC Category / Attack Pattern IDs

  • 16 Dictionary-based Password Attack
  • 49 Password Brute Forcing
  • 70 Try Common(default) Usernames and Passwords
  • 112 Brute Force

CWE Base / Class / Variant IDs

  • 307 Improper Restriction of Excessive Authentication Attempts
  • 799 Improper Control of Interaction Frequency
  • 837 Improper Enforcement of a Single, Unique Action

WASC Threat IDs

  • 11 Brute Force
  • 21 Insufficient Anti-Automation
  • 42 Abuse of Functionality

OWASP Attack Category / Attack IDs

  • Abuse of Functionality
  • Brute Force Attack

Return to OWASP Automated Threats to Web Applications Project.