The effort is expected to be complete by the end of the year.

Russia long has targeted world anti-doping organizations.

The timing of this effort roughly coincides with a similar plan at the U.S. National Security Agency.

The group, also known as APT29 and the Dukes, was "able to fly under the radar for many years while compromising high-value targets, as before," according to ESET.

President Donald Trump appears to have asked Ukraine's President to search for a server linked with the 2016 breach of the Democratic National Committee, a breach CrowdStrike helped to investigate.

The work is the culmination of seven years worth of research into the security of firmware.