Abstract : This paper aims at understanding whether firms should engage in CSR communications towards consumers, or let independent third parties do so. A generalisable sample of 275 adults participated in an experiment, manipulating third-parties credible information (positive information, negative, or absence of information) and company communication (generic vs. CSR communication). Results show a systematic positive effect of CSR communication on corporate brand attitude, even when negative third-parties information is available. CSR communication appears as an efficient and un-risky strategy. Results are further developed and discussed.