Citigroup was accused of issuing exaggerated research reports and not disclosing conflicts of interest. It is alleged this was to avoid disclosing information showing the U.S. Another issue involving privacy on Twitter deals with users unknowingly disclosing their information through tweets. Users may underestimate the harm of disclosing information online. Disclosing more information benefits both parties. For example, it incorporates the concepts of "obtaining", "holding" and "disclosing". Willson stalled this by disclosing information about two of his other clients. OCSP stapling is a way to verify validity without disclosing browsing behavior to the CA. These experiences are what convinced them of the importance of disclosing source code. Barbara Walker was not prosecuted because of her role in disclosing the ring. The board then decides to suspend DJ for not disclosing his criminal record. Obama criticized the Chamber for not disclosing its contributors. LGBT professionals often feel anxiety about disclosing their sexual orientation to their colleagues. He was prevented from disclosing this until 12 months after the film's US release. Mandelson has been criticised for so far not disclosing his clients.