Hot- Download- Byhss Ly Tyz Mhjbt Fy Almykrwbas Wty... Direct

But given the last part almykrwbas — Atbash of that:

A distorted voice, slowed down and reversed, whispered: "The server is compromised. Do not trust the handover. Meet at the old bakery at midnight. Come alone." HOT- Download- byhss ly tyz mhjbt fy almykrwbas wty...

Mira froze. That was her old CIA handler’s voice — the one who'd been declared dead three years ago. But given the last part almykrwbas — Atbash

Given the lack of a clear key from just this short snippet, and since you asked for a based on that line, I’ll treat it as a mysterious encoded message received by a character. Story: The Encrypted Download slowed down and reversed