[jnbiche]

I understand the meaning of "long tail", but not sure what it means in this context. Is this an infosec term? I work in webdev and have never heard it used. Are you referring to less-commonly used web app frameworks?

[Eridrus]

Less commonly used web apps; they tend to have poor security because no-one has cared/known enough to make them not horribly insecure.