Details of millions of UK voters accessed by Chinese state
Deputy prime minister Oliver Dowden to update MPs on cyber-attacks by Beijing, some of whom may also have been targets
Meanwhile, reforms of UK spying laws continue to make their way through parliament, with the investigatory powers (amendment) bill also in the Commons on Monday.
Rishi Sunak said: "China represents an economic threat to our security and an epoch-defining challenge.
"So it is right we take steps to protect ourselves."
Acknowledging the attacks last August, the Electoral Commission said unspecified "hostile actors" had gained access to copies of the electoral registers and broken into its emails and "control systems", but added that it had neither had any impact on any elections nor anyone's registration status