SNORT signatures protected our customers from some of the most common attacks that aren’t as widely known as Olympic Destroyer, a malware Cisco Talos discovered early last year. Snort signatures are still on the front lines protecting users on a day-to-day basis. See the full list of the rules that fired most frequently in 2018 at the Talos blog here: See the list of what attackers used most last year to get an idea of what they were using most frequently at the end of the year.”]
Source: https://blog.snort.org/2019/02/the-most-used-snort-signatures-of-2018.html