Security researchers have warned that millions of these 'low-cost' and 'poorly secured devices' could be infected and remotely controlled by cybercriminals

The agency also warned that email communication from Tusla will only come from official Tusla email addresses for the public to always check the communication source if they have any doubts. 

The HSE and the government have both said that repeatedly that no ransom was to be paid. 

A man in his 20s has been arrested after the firm paid over  €8,000 before they realised it was a scam.