Solid: Spec to store your data securely in decentralized data stores called Pods

I don't think Solid is a good idea for securely storing data..

If you are worried about data loss, Solid gives you no advantages: Pods are stored on regular cloud services (website mentions AWS and Digital Ocean), so the data lost is no worse than regular cloud (+ cloud-provided backups if applicable).

If you are worried about unauthorized access, Solid is actually worse than regular providers: instead of having 1 party who can leak the data (AWS), you know have AWS + Pod Provider + Solid Apps (+ maybe identity provider as well? not sure how this part works). If any of them are compromised, they can copy your data.

If you are worried about uptime/availability, Solid is also worse, as there are many more moving pieces which all have to be up (see previous paragraph).

Where Solid is supposed to shine is decentralized data sharing with other people or with other apps. Like an online editor which saves to your pod.

All specifications (with links to repos): https://solid.github.io/specification/

Solid protocol specification repo: https://github.com/solid/specification