IBM X-Force found that the number of attacks against Industrial Control Systems (ICS) and Operational Technology (OT) increased by over 2,000% between 2018 and 2019. The number of ICS and OT attacks in 2019 eclipsed the total volume of attacks for the preceding three years combined. The IT-OT convergence risks exposing at-risk OT systems to the web, giving malicious actors all they need to conduct a brute-force login attempt or exploit an opening in the software. The issue is that OT systems today lack the right features to withstand modern digital threats.”]
Source: https://securityintelligence.com/articles/it-ot-connection-two-work-together/