IBM has banned employees from using Apple's Siri personal assistant on their corporate networks, fearing that speech-to-text logs from the app might give away corporate secrets.
To be allowed on an IBM network, a device first has to be configured with remote data wipe capabilities and have any file-transfer apps -- like Apple's iCloud -- disabled and replaced with IBM's own MyMobileHub. Because Siri voice queries are sent to Apple's servers to be converted from speech to text, and also analyzed to help improve Siri's accuracy, IBM is worried that employees who use it might be revealing more information than they realize.
Sure, it seems unlikely that some guy at IBM is asking "Siri, can you give me driving directions to the skunkworks lab?" but it's better to be safe than sorry.