You might explore the Brave Browser Developer Tools (aka DevTools) > Network window:
I originally wrote the following for a user of Brave Browser (desktop) stable release. That is an easier approach - using a desktop computer’s big screen - for learning about Developer Tools.
When you have questions about what you see, present your questions to an AI service online - ChatGPT, Netify AI, and Perplexity.ai are what I currently use.
Because I made the screenshots while trying to help a member of the Brave Community who was trying to sign in to Yahoo and check Yahoo Mail, I am going to use the same screenshots … but “you get the idea” → the approach is the same as trying to sign in to X.com. Substitute domain names accordingly.
Later in this lengthy explanation, I do provide screenshots re X.com.
Re Yahoo/AOL Eco-System ← a Unified Login system → so is the X.com Eco-System that now involves Grok AI.
And to make sign-in and retaining access a bit harder for Brave Browser users, the X.com Eco-System now engages the products and services of Cloudflare (challenges such as hCAPTCHA).
To begin …
In a Brave Browser New Window, visit: https://login.yahoo.com
Over at the upper-right corner of the browser window, there is a “layered” 3-horizontal-lines, “hamburger” icon ← click on that, to get a lengthy pop-down menu. Scroll down that menu and select More Tools. An associated pop-up window will display. Click on Developer Tools:
Over at the upper-right corner of the Developer Tools frame/window area, is a vertical 3-dot icon ← click on that. A small pop-up will display, showing options for the arrangement of the DevTools frame/window. Select the 1st (ie left-most) of 4 options:
In the top area of the DevTools window, select the Network tab. And, Disable cache.
Reload the https://login.yahoo.com webpage ← by using keyboard shortcuts (F5 or Ctrl + R on Windows; Cmd + R on Mac). (You do not have to leave the DevTools window’s front-most position.)
Further down the DevTools window, select the Console tab:
Back to near the top of the DevTools window, right-click on the left-most column title, Name … and in the pop-down menu, you can add columns:
I suggest that you add columns, so you can view the whole DevTools > Network tab window as follows. Those individual lines (under the column titles) are typically called network requests (or just requests). More precisely:
- Each row represents a single HTTP request/response transaction.
- In DevTools (including Brave/Chrome), the whole table is often referred to as the Network log.
- Each entry can also be called a network entry or request entry.
An example of using ChatGPT to answer a question, in this case:
Q: Using Brave Browser and wanting to login at https://login.yahoo.com, I have the Developer Tools > Network window open. I have among the columns, a column named Server. In that column, there are many entries of ATS ← I wonder what that is?
Answer from ChatGPT:
In your Brave DevTools Network tab, the Server column shows the value of the HTTP Server response header - basically, what the backend identifies itself as.
When you see ATS, that’s almost certainly referring to Apache Traffic Server.
What that means in practice:
Apache Traffic Server (ATS) is a high-performance caching proxy and CDN edge server.
It’s often used by large companies (like Yahoo) to:
- Cache content closer to users
- Route requests efficiently
- Improve load times and reliability
So your request to login.yahoo.com is likely being handled (or passed through) Yahoo’s edge infrastructure running ATS, rather than a “raw” application server.
Following is a screenshot of the Brave Browser > Developer Tools > Network [tab] window when visiting https://x.com
The first Request/Response row beneath the column titles, under the Name … begins with client accounts.google.com
Under Status you see that this Request/Response was at some point, blocked. And down in the Console section of the window, I found:
With some trial-and-error using Brave Site-Specific Shields settings, I discovered that I had to completely allow Trackers & Ads:
Result, after reloading the webpage …
So you see a direct result of your effort.
Note: Over in the right-most column of the DevTools for x.com screenshot, under the Server column title name, you see a lot of cloudflare.
20260422 Wednesday Update - Found the GitHub issue link:
Brave Browser Cannot Login to X.com/Twitter #53794
‘https://github.com/brave/brave-browser/issues/53794’
Tool Tip example: Using Brave Site-Specific Shields > Fingerprinting granular controls - solved a website [compatibility?] font issue:
‘Some websites don't render with the correct fonts - #3 by LinuxGuy-cyber’