Influence operation
Star Blizzard UK 2019 trade-document hack-and-leak
UK-US trade documents leak
A hack-and-leak episode involving UK-US trade documents acquired through a compromise that the NCSC later attributed to Star Blizzard, a group assessed as subordinate to the Russian FSB's Centre 18. UK authorities separately assessed that Russian actors almost certainly promoted the leaked material online before the 2019 general election.
The public record separates two findings: the NCSC's later attribution of the compromise to Star Blizzard and the government's 2020 assessment of Russian amplification. The documents initially gained little or no traction, and the government said it found no evidence of a broad-spectrum Russian campaign against the election. The record does not establish altered ballots, counts or the election result.