China-linked hackers using everyday devices to hide attacks, cyber agencies warn

April 23, 2026 7:17 AM EDT

LONDON, April 23 (Reuters) - International ‌cyber agencies on ​Thursday ​urged organisations to better defend against covert networks used by China-linked hackers to conceal malicious cyber activity, according to ‌Britain's National Cyber Security Centre.

The NCSC published the new ⁠guidance alongside industry and 15 international partners from across eight other countries: the United ‌States, Australia, Canada, Germany, Japan, ‌the Netherlands, New Zealand and Spain.

Covert networks, usually made up of what the NCSC described as vulnerable everyday internet-connected devices such ​as home routers and smart devices, are used to target critical sectors globally, steal sensitive data, and maintain persistent access.

"In recent years, ⁠we have seen a deliberate shift in cyber groups based in China utilising these networks ​to hide their malicious activity in an attempt to avoid accountability," NCSC director of operations Paul Chichester said ​in a statement.

The Chinese foreign ministry did ‌not immediately respond to a Reuters request for comment.

The new guidance - jointly issued with agencies including the U.S.'s ⁠Federal Bureau of Investigation - warns that attacks can be hard to detect because evidence can disappear quickly, complicating efforts to disrupt such activity.

The advisory comes ⁠a day after Richard Horne, the head of the NCSC, warned Britain to ​brace for a rise in cyberattacks directly or indirectly from nation states, including China, Iran and Russia.

He said his agency had continued to handle about four ‌nationally significant cyber incidents a week on average and that the highest-impact attacks were increasingly tied to governments ‌rather than criminal gangs alone.

Britain has also called on leading AI companies ⁠to work with the government ‌to build AI-powered cyber-defence ​capabilities to protect critical national infrastructure.

(Reporting by Muvija M and Sam Tabahriti, additional reporting by Beijing newsroom, editing by ‌William James)



Serious News for Serious Traders! Try StreetInsider.com Premium Free!

You May Also Be Interested In





Related Categories

Reuters