From gbhackers.com
Recently, in a joint warning, the cybersecurity agencies of the US and UK have released a set of large-scale brute-force attacks escorted by the Russia-linked APT28 hacking group.
There were many other groups that have been tracked in this attack like, Fancy Bear, Pawn Storm, Sednit, Strontium, and Tsar Team. Not only this, even all these groups have attacked many organizations all over the world.
The report of NSA pronounced that the brute force attacks that have been detected have the ability that enables the 85th GTsSS threat actors to access guarded data, that involves email, and identify valid account credentials.