TL;DR: All in all it revolves around: >... some investigators inside Equifax to suspect a nation-state was behind the hack. Many of the tools used were Chines

TL;DR: All in all it revolves around: >... some investigators inside Equifax to suspect a nation-state was behind the hack. Many of the tools used were Chinese, and these people say the Equifax breach has the hallmarks of similar intrusions ... The following sentence: >Others involved in the investigation aren't so sure, saying the evidence is inconclusive at best or points in other directions. is the exact opposite. And the one following is even worse: >One person briefed on the probe being conducted by the Federal Bureau of Investigation and U.S. intelligence agencies said that there is evidence that a nation-state may have played a role, but that it doesn't point to China. The person declined to name the country involved because the details are classified. So with the investigation still not concluded there is a small number (not quantified) of people saying it was a Nation-State AND Chinese, another small group (also not quantified) saying that it was NOT a Nation-State (and thus NOT Chinese) and ONE single person stating that State-Sponsored intelligence "may have played a role" BUT NOT Chinese. All the rest ia about how good are (or were) the people at Equifax and how hard they tried to make this not happen, but of course you can do nothing if you are the target of a Nation-State intelligence, particularly if Chinese.