Method and system are provided for security credentials management for client applications. The method includes: detecting a user is entering security credentials for authentication of a client application; hashing at least a portion of the entered credentials to obtain current hashed credentials and storing the current hashed credentials; and comparing the current hashed credentials to previously stored hashed credentials for the client application. If the current hashed credentials and the previously stored hashed credentials match, the method may store the credentials for automatic completion of the credentials for the client application.