|Developer(s)||Jungle Disk, Inc.|
|Operating system||Windows / Mac OS X / Linux|
Jungle Disk is an online backup tool that stores its data in Amazon S3 or Rackspace Cloud Files. It was highlighted by Amazon as one of the earliest S3 clients. The basic Jungle Disk software is sold as a monthly subscription model, and the customer has the option to be billed directly by Jungle Disk or they can choose Amazon Payments.
Jungle Disk can be scheduled to back up selected files or folders. It provides a local webdav server and a local web interface that synchronize to the user's S3/Cloud Files account, optionally encrypting backed up data on the client side. For a monthly fee, the company will provide a hosted web interface and more advanced backup functionality.
On October 22, 2008, Jungle Disk entered into an agreement to be acquired by Rackspace Hosting, Inc. Rackspace purchased Jungle Disk in order to expand their cloud hosting services. After the acquisition, Jungle Disk's development and support slowed down. In 2013 Jungle Disk revived its support and now offers phone, chat and ticket support although no new development software has been released in years.
The Jungle Disk Desktop Edition hasn't seen an update since 2012. Rackspace has added Jungle Disk back into their  portfolio and is investing to make improvements to the product.
- The lack of a Message Authentication Code means that file corruption (accidental or deliberate) or arbitrary file content insertions will not be detected
- The use of MD5 as a Key derivation function makes it easy to perform a brute-force attack on the Jungle Disk password.
- Kirkpatrick, Marshall. "Amazon releases early info on S3 storage use". TechCrunch.
- Jason Brooks. "Jungle Disk Aids Amazon Storage". eWeek. Ziff Davis.
- "Rackspace Cloud Office".
- Colin Percival. "Insecurity in the Jungle (disk)".
- "If the people running the underlying storage service (Amazon S3 or Rackspace Cloud Files) know the contents of a file stored via Jungle Disk, they could transform it into anything they want — planting files which are dangerous (e.g., viruses) or even illegal (e.g., child pornography). " Percival 2011