US Treasury Is Latest Victim of Most ‘Persistent’ Hacking Threat

A growing roster of political figures, US government agencies and companies that provide critical services have one thing in common: They have allegedly been hacked by China.

The latest victim is the US Treasury Department, which disclosed on Monday that Chinese state-sponsored hackers had breached its network via a third-party provider, accessing some unclassified documents.

While details of the hack remain scant, cybersecurity experts say it confirms what US intelligence officials warned earlier this year, that China is the “most active and persistent cyber threat to US government, private-sector and critical infrastructure networks.”

“The Russians get a lot of ...