Is it just me, or is Lemmy starting to have a spam problem?

Perhaps this isn't new, as I've only been on Lemmy for around 3 months, but up until this point I hadn't noticed spam, advertising, scams, etc at all on Lemmy. However, within the last 2 days I've seen at least 3 examples of obvious spam posts, made by accounts clearly dedicated to that purpose. Has anyone else noticed this? And are there steps we could take to counter it (perhaps a report button)?