"In this digital age? Absolutely," Xiao replied. "We can't use public clouds; they're all Sumeragi-owned. I’ve set up a using the latent bio-electric fields of sympathizers across the city. It’s end-to-end encrypted, zero-knowledge, and because we’re piggybacking on the Septimal energy grid, it won't cost us a single credit."
You can password-protect download links and set expiration dates even on the free tier.