China and Japan have both fallen victim to the global "ransomware" cyber attack that has created chaos in 150 countries.
Chinese state media say more than 29,000 institutions across the country have been infected, along with hundreds of thousands of devices.
Xinhua News Agency cited the Threat Intelligence Centre of Qihoo 360, a Chinese internet security services company.
It said universities and educational institutions were among the hardest hit, numbering 4,341, or about 15% of internet protocol addresses attacked.
Also affected were railway stations, mail delivery, petrol stations, hospitals, office buildings, shopping malls and government services.
The Japan Computer Emergency Response Team Co-ordination Centre said 2,000 computers at 600 companies in Japan had been affected.
Hospitals have stopped diverting patients following last week's cyber attack which crippled many NHS Trusts' IT systems.
A young computer expert from north Devon who was hailed a hero for helping to stop the global cyber attack said he was just "doing my bit".
One surgery has no access to medical records.