Exfiltrated:
Withdraw (troops or spies) surreptitiously, especially from a dangerous situation.
‘US special forces agents have all been exfiltrated from Iran’ [Oxford Dictionaries]
Noted in “The Equifax Breach: Getting From Talk to Organized Response,” Rebekah Lewis, Lawfare, in a quote from a letter written by Democrats on the House Energy and Commerce Committee:
3. Why were the Equifax network operations and security staff unaware that volumes of data involving 143 million U.S. consumers had been exfiltrated from the Equifax network for so long? Does Equifax regularly monitor for intrusions into its network? Was it conducting regular monitoring during the time of the breach?