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In business, a Chinese Wall or firewall is an information barrier implemented within a firm to separate and isolate persons who make investment decisions from persons who are privy to undisclosed material information which may influence those decisions. This is a way of avoiding conflict of interest problems.
In general, all firms are required to develop, implement and enforce reasonable policies and procedures to safeguard insider information, and to ensure no improper trading occurs. Although specific procedures are not mandated, adopted practices must be formalized in writing and must be appropriate and sufficient. Procedures should address the following areas: education of employees, containment of inside information, restriction of transactions, and trading surveillance.