Alice Huang is known for being a former executive at Megaspeed, a company at the centre of US spy claims. The exact nature of these claims is not specified in the provided evidence. However, it is mentioned that she was involved with Megaspeed, a company that has been linked to espionage allegations. The article does not provide further details about the specific claims or the extent of her involvement with the company. It is also unclear what her current role or status is, as this information is not mentioned in the evidence. The article appears to be focused on providing a brief overview of who Alice Huang is and her connection to Megaspeed, rather than delving deeper into the specifics of the US spy claims.