Britain’s cybersecurity agency says companies must step up vigilance to prevent espionage attacks

Business live – latest updates

British businesses are being urged to step up their vigilance against a China-linked hacking ploy that uses everyday devices for espionage.

The UK’s National Cyber Security Centre (NCSC) and agencies in nine other countries have warned of persistent attempts by Beijing-backed groups to hack equipment such as wifi routers to launch cyber-attacks.

Known as “covert networks” or “botnets”, they typically target vulnerable equipment – for instance devices that have not had a software update or are old – as a base for staging activities such as surveillance and data theft.