Pathweb

The Pathweb, also known as the command network the Dalek galactic webwork, and the Dalek hive mind, was the shared intelligence of the Daleks, containing information on their history and experiences.

History
As recounted by the Tenth Doctor, the Pathweb was created as a central repository for all Dalek knowledge in the earliest days of their diaspora from Skaro, allowing all Daleks to know what their fellows knew. (AUDIO: The Triumph of Davros) Though it was often compared to a hive mind, Oswin Oswald noted that it was more an artificial telepathic link than a true hive mind; (TV: Asylum of the Daleks) the Sixth Doctor described it as "artificial telepathy between Daleks," (AUDIO: The Curse of Davros) and when he compiled a list of supercomputers, he included the Dalek Emperor because it was connected to the Dalek galactic webwork. (PROSE: The Quantum Archangel) The War Doctor once summarised it as how the Daleks communicated with each other. (AUDIO: The Heart of the Battle) The Doctor had attempted to hack into the Pathweb but was unsuccessful. (TV: Asylum of the Daleks)

During the Dalek-Movellan War, Davros discovered the Movellan analogue to the Pathweb, whose existence the Tenth Doctor then informed him of. Inspired, Davros connected himself to the Pathweb and used it to invite the nearby Supreme Dalek to the Movellan flagship to propose a truce and alliance with the Movellans against the humans, though in reality he meant to lower the Movellans' guard and endear himself to the Daleks. When the Doctor and the Space Security Service thwarted this scheme, the Daleks retreated, disconnecting Davros from the Pathweb and abandoning him. (AUDIO: The Triumph of Davros)

Using the command network, one Dalek could contact all others to share information. (AUDIO: Jubilee) Susan Mendes and Kalendorf were able to hack into the Dalek Emperor's command network and cause all Dalek technology to self-destruct, creating the Great Catastrophe. (AUDIO: Dalek War: Chapter Four)

By one account, the Pa Jass-Gutrik that the Daleks fought against the Movellans involved them sabotaging the Movellan power pack production facilities, linking the Movellans to the Pathweb. When enough time had passed, a signal was sent through the Pathweb, sending the Movellans into a civil war that allowed the Imperial Daleks to wipe them out. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)

During the Kotturuh crisis, when the Eighth Doctor and the Dalek Prime Strategist were exploring the records of Wrax, the latter gave the former a communication device to keep them connected through the Pathweb. When the Wraxians aimed to turn the Devolver on the Dalek Time Squad, the Dalek Time Commander contacted the Dalek Executioner through the Pathweb to order the extermination of the Wraxians. (AUDIO: The Enemy of My Enemy)

When fighting the Daleks on Keska, the War Doctor altered the Pathweb signal boosters, when the Daleks on Keska logged in at full strength, he essentially gave them concussions, leaving them immobile and vulnerable. (AUDIO: The Heart of the Battle)

As a result of the Last Great Time War changing timelines, the five original members of the New Dalek Paradigm had no way to verify the Pathweb's data of the conflict, even being unsure if some of the Dalek Empire's plans during the War, as reported by the Pathweb, were real. As such, they chose to focus on how the Time Lords were gone and how they had effectively won the conflict. When the Paradigm's leadership reformed into the Parliament of the Daleks, only snippets of the body's discussion were uploaded to the Pathweb. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)

The Doctor once attempted to hack into the Pathweb, but was unsuccessful. When several inmates of the Dalek Asylum attacked his eleventh incarnation upon recognising him, Oswin Oswald, already part of the Pathweb because of her conversion into a Dalek, deleted all information connected with the Doctor from the Pathweb. This resulted in all memory of the Doctor by the Dalek race being forgotten. (TV: Asylum of the Daleks) Despite Oswin's efforts, the Daleks regained knowledge of the Doctor from Tasha Lem during the Siege of Trenzalore. (TV: The Time of the Doctor) The sudden remembrance of their foe drove the Prime Minister of the Daleks mad. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)

A Dalek christened Rusty by the Twelfth Doctor later had its suppressed memories unlocked and then saw several past Dalek experiences through the Pathweb (TV: Into the Dalek), which were the memories of Henry Van Statten's "Metaltron" exterminating Bywater as it escaped the Vault in the Battle of GeoComTex (TV: Dalek) and Davros's New Dalek Empire attacking the Valiant during the 21st century Dalek invasion of Earth. (TV: The Stolen Earth)

The Twelfth Doctor believed the hive mind's database was greater than even the Matrix on Gallifrey. With the help of Rusty, he accessed it to gain information on the Testament. Rusty was able to display the information he accessed holographically for the Doctor. (TV: Twice Upon a Time)

Functionality
The Pathweb linked all functions and informations of the Dalek race, holding the whole of their knowledge. (AUDIO: The Triumph of Davros) Though it was protected from external breaches, it was vulnerable to internal tampering with even a simple Bronze Dalek drone being able to erase information as important as the Daleks' knowledge of the Doctor. Removing information from the Pathweb caused all of the Daleks to forget it, (TV: Asylum of the Daleks) though the information could be recovered if a new source of it was found. (TV: The Time of the Doctor)

Information uploaded to the Pathweb was beamed across the Dalek network, (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe) allowing those Daleks closer to the source of the transmission to interfere with a broadcast before the rest of their species received it. (AUDIO: The Triumph of Davros)

The Pathweb made use of signal boosters. (AUDIO: The Heart of the Battle)