Encryption is a key component of the defense-in-depth principle and Oracle continues to develop innovative solutions to help customers address increasingly stringent security requirements around the safeguarding of PII data. Retailers can use Oracle Advanced Security TDE to address PCI-DSS requirements while university and healthcare organizations can use TDE to safeguard social security numbers and other sensitive information. Encryption plays an especially important role in safeguarding data in transit. Oracle Advanced Security network encryption protects data in transit on the intranet from network sniffing and modification. Oracle Advanced Security TDE protects sensitive data on disk drives and backup media from unauthorized access, helping reduce the impact of lost or stolen media.