# DP-SGD (Differential Privacy SGD) + Federated FT: Opacus + Flower

> Source: https://sukruyusufkaya.com/learn/fine-tuning-cookbook/ftc-dp-sgd-federated-ft
> Updated: 2026-08-13T13:13:06.252Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part XVIII — Compliance, Governance & Red-Teaming
**TLDR:** Hassas data ile FT yaparken privacy guarantee'ler: DP-SGD (Opacus library) — gradient'lara controlled noise ekle, (ε, δ)-differential privacy garanti. Federated FT (Flower) — data hiç sunucuya gelmesin, sadece gradient. KVKK + sağlık + finans için ideal. Privacy budget vs accuracy trade-off.