The CBB may be alerted to possible contraventions or breaches by complaints from the public or CBB licensees, or listed companies or issuers of securities by referrals from other authorities, or through its own enquiries and supervisory activities. CBB licensees or listed companies, or issuers of securities may also bring their own contraventions to the CBB's attention, as they are obliged to do so under the CBB Law, rules and regulations.