# PostHog product-57ef808bba — Release & Upgrade Intelligence
- **Product:** PostHog (https://posthog.com)
- **Version:** product-57ef808bba
- **Released:** Nov 06, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/posthog/updates/product-57ef808bba/

## Executive Summary (TL;DR)
PostHog now enables browser SDK installations to pin a SHA-384 hash for the core script downloaded by the static loader. This security enhancement ensures that any modified script bytes are rejected instead of being silently loaded.

## New Features
- SHA-384 hash pinning capability for browser SDK scripts
- Rejection of modified browser SDK script bytes

## Improvements
- Enhanced security for browser SDK script loading via integrity checks