Anthropic's report miss a fundamental information: did the attack was started by an inside person ? outside ? can I use my claude to feed these prompts and hack the world without even knowing how to get other companies source code or data ? That's the main PR bs, attribute to chinese group, don't explain how they got there, if they had to authenticate to anthropic platform after infiltrating the victims network, and if so where's the log. If not, it means they used claude code for free, which is another red flag.
That's IN the report. Yes, yes you can. You don't need to be an insider at Anthropic to use Anthropic's AIs.
They used a custom Claude Code rig as an "automated hacker" - pointing it at the victims, either though a known entry point or just at the exposed systems, and having it poke around for vulns.
They must have used either API keys or some "pro" subscribtion accounts for that - neither is hard to get for a cybercriminal. If you have access to Claude Code and can prompt engineer the AI into thinking you are doing legitimate security work, you can do the same thing they did.
How do you attribute an attack like this? You play the guessing game. You check who the targets were, what the attackers tried to accomplish, and what the usage patterns were. There are only this many hacker groups that are active at the work hours of the work days in China and are primarily interested in targeting government systems of Taiwan.