An uptick trend in cybercriminals using exploit kits that we first noticed in our spring 2018 report has continued into the summer. This has made the summer quarter one of the busiest weve seen for exploits in a while. The majority of EK activity contained in Asia, maybe due to a greater likelihood of encountering vulnerable systems in that region. In this era of widely-shared exploit proof-of-concepts (PoCs), we are starting to see an increase in pseudo-exploit kits These are drive-by downloads that lack proper infrastructure and are typically the work of a lone author.”]
Source: https://blog.malwarebytes.com/threat-analysis/2018/08/exploit-kits-summer-2018-review/