How would you do outreach in this situation?

About a year and half ago, we had a situation where one of my clients was making about $30-40k per month for years from Google Ads, and suddenly it went to $0 for a number of months (without us changing anything). After seeing that most businesses are getting 20-60% in ad or click fraud per industry metrics, we saw a big opportunity to help businesses to prevent going through what I went through, given our collective expertise.

A few of my buddies and I who are security researchers have since built (and are continuing to build) a SaaS app that identifies one’s traffic, and prevents bots and fraud from impacting a person or business’s ads/and the algorithm – we’re mostly focused on Google Ads/FB/Reddit Ads for the time-being but really it’s for all ad platforms. 

With extremely limited outreach so far, marketing agencies seem like the ones that have paid the most attention --- however it wouldn't be fair to say because I haven't done any outreach to other segments. If you were in my shoes, for this kind of saas tool, to whom would you reach out to ( or run ads to, or perhaps make partnerships, or maybe something else?), and how would you reach out (aka what's your favorite outreach medium, and message?

Thanks for sharing redditsters