Personal Assistant Crab available in our iDevices interprets commands spoken by users with the help of servers Apple Lossless Audio CODEC (ALAC), which processes everything recorded by the microphone of the iDevices. All the words spoken by us reach the servers of the company in Cupertino, and Apple stores those data for 2 years to analyze them and improve the system. Apple assigns a random number to each iDevice it uses Crab and sends data to the servers, those data being saved according to the number on the basis of which they came, but the company claims that it does not know exactly from which users each set of data comes.
According to Apple's Tracy Muller, the company takes steps to ensure that the data is anonymized and only collects the Siri voice clips in order to improve Siri itself. "Our customers' privacy is very important to us," she says. Apple generates a random number to represent the user and it associates the voice files with that number. This number — not your Apple user ID or email address — represents you as far as Siri's back-end voice analysis system is concerned. Once the voice recording is six months old, Apple "disassociates" your user number from the clip, deleting the number from the voice file. But it keeps these disassociated files for up to 18 more months for testing and product improvement purposes.
6 months after the data is recorded, the company dissociates the numbers from them and stores them for another 18 months, during which they analyze them in an attempt to improve the assistant's functionality, but if you disable Siri, all that data is deleted, along with their identifiers . In practice, Apple retains all data for up to 2 years and uses it for seemingly noble purposes, but the company kept these practices secret until recently, despite the fact that US lawyers have repeatedly asked for an explanation of the process on the basis of which the data is taken .
Even if Apple claims that all information is received anonymously and analyzed under the same conditions, it is good not to say confidential information to the assistant, considering that everything you say is ultimately analyzed by someone or something.
