The document discusses several security issues related to the collection and storage of metadata. It notes that while most metadata is random and anonymous, it can also contain personally identifiable information. This makes metadata a desirable target for cybercriminals. Additionally, dishonest employees may leak valuable marketing data or embarrassing personal information. Poorly trained employees are also more risk of falling for social engineering attacks. Finally, outside attacks could be used to disrupt services or steal stored information. The document argues that while anonymous metadata poses few risks, the collection of large amounts of data presents serious security challenges.