why impose sanctions on Russia and not China? The article implies that allies would not agree to sanctions which is fair enough, but the USA can still do something alone, no?
Didn't vault 7 revealed the NSA had tooling to make hacks look like Russian and Chinese hacks Umbrage and the marble framework.
Wouldn't be surprised they will use these hacking threats to create a western great fire wall.
Pompeo already talked about it with the Clean network Initiative.
China will probably deny it regardless of what other countries say. Beyond that, attribution isn't made by IP addresses.
Useually they get some of the hackers tools / code and analyse that to discover the origin. They look for strings in a foreign language but mostly the grammer of the language is used as hackers will often write comments in a foreign language to try and make it difficult to originate.