[bediger4000]

Which APT is this?

[halJordan]

Equation Group was discovered & named in 2015 by kaspersky due to their pervasive use of encryption, kaspersky identified them as actors related to the people who produced stuxnet and flame (which also implicates regin).

They are G0020 in the mitre att&ck framework

[runnerup]

NSA, part of USA government[0]

0: https://en.wikipedia.org/wiki/Equation_Group