Other Mobile Storage Media

Confidential data should not be stored or exchanged on portable media such as: floppy disks, CDs, DVDs, unless individual files are appropriately encrypted.

7-Zip provides suitable strong encryption.

• http://www.7-zip.org/
• 7-zip user guide

Note that most older zip tools only provide weak encryption, and should not be used.  Also, password protection features in applications including Word and Excel provide very little protection, and should not be used.

See also 

• Data exchange with external organisations.