Spooks (2002)

S9E6 Cybershell

Title: Cybershell Plot: Tensions flare between the CIA and MI5 after an American drone, compromised while under British supervision in Afghanistan, results in tragic casualties. Beecher, the CIA's London chief, arrives at the Grid to oversee the setup of a cutting-edge cybersecurity initiative called 'Cybershell' to avert future incidents. Meanwhile, Lucas is assigned to escort Daniella Ortiz, a former hacker now working as a cryptographer for the White House, to the Grid; she possesses the crucial installation codes. When the Grid experiences a severe hack and goes into lockdown, the team faces a dire crisis. Can they thwart the impending theft of vital intelligence, and will Lucas manage to safeguard Ortiz as the hackers aim to eliminate any obstacles?