4.3. As soon as an End User knows or has reason to suspect that Means of Authentication have fallen into the hands of unauthorized persons, the End User will inform the Authorized User or the Licensee of this, notwithstanding the End User’s own obligation to immediately take effective measures by, for example, setting different usernames and passwords or suspending the account concerned. Where appropriate, the Authorized User will take suitable action, independently or together with Licensee or Avisi.