OpenCTI

OpenCTI isan open source platform allowing organizations to manage their cyber threat intelligence knowledge and observables. It has been created in order to structure, store, organize and visualize technical and non-technical information about cyber threats.

Use GreyNoise to answer this question: "Is everyone else seeing this stuff, or is it just me?"

In other words: "Is this just regular Internet background noise or is machine actually targeting and attacking ME specifically?”