Dalek data core

The Time Lords understood that the Dalek data core was breached by the Eleventh Doctor, who used a damaged New Paradigm Supreme Dalek to provide him with information about the Silence. (PROSE: Dalek Combat Training Manual) The Doctor had in fact accessed the Dalek's personal data core, located within its casing. (TV: The Wedding of River Song)

During the Master's Dalek Plan, the Thirteenth Doctor placed an extraction device on the dome of a bronze Dalek traitor to acquire the data from its casing. (TV: The Power of the Doctor)