Apple recently confirmed that it stores the questions you ask Siri, and the responses the voice engine provides, on its servers for two years. This might seem like a massive privacy concern, especially since Apple is literally storing clips of your voice, Wired said, but Apple doesn’t see it that way.
Apple spokeswoman Trudy Muller told Wired that the Siri data is anonymous, which means Apple shouldn’t be able to track any search results back to you, and that it’s mostly kept in an effort to make sure that the voice engine works as well as possible. “Our customers’ privacy is very important to us,” Muller said in a statement. “Apple may keep anonymized Siri data for up to two years. If a user turns Siri off, both identifiers are deleted immediately along with any associated data.”
Muller explained that Apple takes your voice queries—such as that time when you asked what the weather was—and stores the recordings for six months with a unique code that somehow links the recording to your iPhone. Six months later—and Wired didn’t explain why there’s a six month time frame—Apple deletes that unique code effectively removing any association between the voice clip and the user who spoke it. Apple still hangs on to those files for an additional 18 months, however.
The American Civil Liberties Union is up in arms over the privacy issues related to Siri, however, and thinks that Apple should make the storage information clearly available to all Siri users.