Businesses are being warned that they need to be prepared for major cyberattacks in 2023.

Cybersecurity firm Smarttech247 says it has seen a doubling of nation state-related attacks in the past 12 months.

The company says that the dramatic increase in incidents is mainly due to the Russian invasion of Ukraine.

"Geopolitical events over the past year have had a profound impact on cybersecurity operations for both private and public organisations across the world," said Raluca Saceanu, CEO of Smarttech247.

Ms Saceanu is warning that cyber criminals continue to find new, innovative ways of breaking into networks and that hackers who offer their services for a fee are continually developing their offering.

"We have seen the continuous expansion of cybercrime-for-hire in the form of both ransomware and phishing as a service," she said.

"The reality is that social engineers constantly advance their tactics and techniques to gain access to systems," Ms Saceanu added.

She was speaking at the launch of a major cyber security conference which will take place in Dublin in March.

"Zero Day Con" will see leading technology firms, industry experts and government officials gather to share insights on cybersecurity.

Speakers will include international experts from the FBI and the US Naval Criminal Investigative Service (NCIS).