Section 6(b) of the Consumer Product Safety Act generally requires the Consumer Product Safety Commission to get permission from a manufacturer before releasing to the public any information about a defective product that would reveal the identity of the manufacturer. Even when the CPSC announces an alert or recall, companies often can restrict the information that the agency releases.
In the face of some recent recalls of dangerous baby products, Consumer reports writes about the law, its origins, and the risks it poses to public safety. The article is here.