From securelist.com
There is no longer a downward trend in the percentage of ICS computers on which malicious objects were blocked.
Starting with the second half (H2) of 2019, we observed a decline in the percentages of ICS computers on which malicious objects were blocked. This was observed in industrial control systems (ICS) as well as in corporate and personal computing environments. This downward trend was not observed in the second half of 2020.