Over the years I've done several series for Kaspersky, which enjoyingly for me have all been rather varied in their scope (that 'scope' being mainly internet security!)
The latest series covered Ransomware through some comics that served to be both entertaining and informative.
I've also done a comic for Kasperski on Safer Internet Day each year, which is always a fun one.
Another campaign involved a fun look comparing internet life in the 90s to now...