1- You need a video commercial something simple, entertaining and youthful, something that would generate interest in your product, and people will be intrigued by 2- Create a good landing page or a website for your startup if you don't already have one and add the commercial to it. You need a great website, something that screams professional and clean, especially since your product is cybersecurity, and attach free trials along to your website. 3- Now for the next step, you need to spread your website far and wide on social media and web magazines, and try to have the biggest number of people visit and try it, and make sure you collect their reviews. 4- Once you have a big number of people who tried and loved your product, you can approach investors again, but this time with a product that has been tested and widely accepted in the market.
I probably have a few more good ideas, hit me up and lets chat about it more.