Updated
Updated · ZDNet · Jul 22
Firefox 153 Turns On 4 Containers by Default as Mozilla Adds Local Network Permission Prompts
Updated
Updated · ZDNet · Jul 22

Firefox 153 Turns On 4 Containers by Default as Mozilla Adds Local Network Permission Prompts

3 articles · Updated · ZDNet · Jul 22

Summary

  • Mozilla made Containers opt-out in Firefox 153, shipping four preset spaces—Personal, Work, Banking and Shopping—to isolate tabs, cookies and logins by default.
  • That change aims to curb cross-site tracking and data leakage between tabs, while still letting users run multiple accounts for the same service in one browser.
  • Firefox 153 also starts prompting when a website tries to reach devices or services on a local network, including routers, printers, file servers, smart TVs and other IoT hardware.
  • The local-network control is still experimental and rolling out gradually, but users can already manage site permissions manually in Firefox settings.

Insights

Is Firefox 153 the final fix for choppy video playback for NVIDIA users on Linux?
If JPEG-XL is technically superior, why is it still fighting for survival on the web in 2026?
Is Mozilla's push for open standards a noble fight or a losing battle against dominant tech giants?