Facebook Inspect Tool
Evangeline Mellon
Flipper aims to be your number one companion for mobile app development on iOS and Android. Therefore, we provide a bunch of useful tools including a log viewer, interactive layout inspector, and network inspector.
Flipper is built as a platform. In addition to using the tools already included, you can create your own plugins to visualize and debug data from your mobile apps. Flipper takes care of sending data back and forth, calling functions, and listening for events on the mobile app.
Both Flipper's desktop app and native mobile SDKs are open-source and MIT licensed. This enables you to see and understand how we are building plugins, and of course join the community and help improve Flipper. We are excited to see what you will build on this platform.
So apparently because of the recent scams, the developer tools are exploited by people to post spam and even used to "hack" accounts. Facebook has blocked the developer tools, and I can't even use the console.
I'm a security engineer at Facebook and this is my fault. We're testing this for some users to see if it can slow down some attacks where users are tricked into pasting (malicious) JavaScript code into the browser console.
If you ended up in the test group and are annoyed by this, sorry.I tried to make the old opt-out page (now help page) as simple as possible while still being scary enough to stop at least some of the victims.
Epilogue: The Chrome team decided that defeating the console from user-side JS was a bug and fixed the issue, rendering this technique invalid. Afterwards, additional protection was added to protect users from self-xss.
Besides redefining console._commandLineAPI,there are some other ways to break into InjectedScriptHost on WebKit browsers, to prevent or alter the evaluation of expressions entered into the developer's console.
Which is kind of nice, as you can directly monkey patch InjectedScript._evaluateAndWrap instead of having to rely on InjectedScriptHost.evaluate as that gives you more fine-grained control over what should happen.
As you see the little-left arrow, indicating output, is still there, but this time we get an object. Where the result of the expression, the array [1,2,3,4] is represented as an object with all its properties described.
When you say it is client-side, it happens outside the control of the server, so there is not much you can do about it. If you are asking why Facebook still does this, this is not really for security but to protect normal users that do not know javascript from running code (that they don't know how to read) into the console. This is common for sites that promise auto-liker service or other Facebook functionality bots after you do what they ask you to do, where in most cases, they give you a snip of javascript to run in console.
and if the browser disables javascript at address bar, (When you paste code to the address bar in Google Chrome, it deletes the phrase 'javascript:') pasting javascript into one of the links via inspect element is still possible.
The best tool by far according to my knowledge would be to add multiple javascript files that simply changes the integrity of the page back to normal by refreshing or replacing content. Disabling this developer tool would not be the greatest idea since bypassing is always in question since the code is part of the browser and not a server rendering, thus it could be cracked.
Should you have js file one checking for changes on important elements and js file two and js file three checking that this file exists per period you will have full integrity restore on the page within the period.
If you put all these files together and build the example you will see the function of this measure. This will prevent some unforseen injections should you implement it correctly on all important elements in your index file especially when working with PHP.
Why I chose reload instead of change back to normal value per attribute is the fact that some attackers could have another part of the website already configured and ready and it lessens code amount. The reload will remove all the attacker's hard work and he will probably go play somewhere easier.
Another note: This could become a lot of code so keep it clean and make sure to add definitions to where they belong to make edits easy in future. Also set the seconds to your preferred amount as 1 second intervals on large pages could have drastic effects on older computers your visitors might be using
Inspect is also an incredibly valuable tool for those learning web development. Instead of viewing plain source code, I can use the inspect element to interact with the page and see how each line of code maps to an element or style.
Chrome comes with a handy developer tool that allows you to inspect individual elements. This allows you to see the code behind a web page and even edit it on your own browser. (Note that the changes are only visible to you, not to anyone else across the web.)
The biggest area of the panel will contain the source HTML of the current page. I always spend some time exploring this region. Hovering the cursor over the piece of code highlights the corresponding element on the page.
Rather than trying to read through the code to find an element, I can also do the opposite. I can locate a piece of code by hovering over the page element itself. To do this, I click the Element select icon in the top left corner of the panel.
To inspect an element on Mac, open up Safari. Select Safari > Settings > Advanced, then toggle the option that reads Show Develop in the menu bar. Then, access your desired web page, right-click, and tap Inspect Element.
I can use my cursor to explore the source HTML and see which lines of code correspond to each page region. Blue highlights the contents, green highlights the padding, and orange highlights the margins.
The Firefox inspector appears along the bottom of the window by default. To change its position, I can select the three-dots icon in the top right corner of the inspector, then choose an alternative display option.
To toggle the CSS styling of an element, I use the Filter Styles region at the bottom of the inspect panel. There, I can uncheck the box next to a CSS declaration to deactivate it (or write in new code myself):
The Facebook tracking pixel is one of the most powerful analytics modules available to the average business owner. Installed on your site, it can track a wealth of information about your visitors, more even than Google Analytics, with the one caveat that you need to log into Facebook Insights to access that data. It can even track users who aren't logged into Facebook, though it won't be able to tie them to specific Facebook accounts. It's an incredibly powerful tool.
Like Google Analytics, to install the Facebook tracking pixel, you need to manually insert the code into your website. Some people are more than comfortable with this process, but others aren't, and either way, it's a good idea to verify that it's working once you install it.
There are a lot of different ways you can test and verify your tracking pixel. I'm going to list as many of them as I know, in case you can't use one or another for some reason. Generally, you'll only need to use one of them to verify, but double-checking can't hurt.
Once you have installed the pixel, make sure to load a page or two on your website, click a few buttons you've assigned conversions to, and generally make sure there's some kind of activity for Facebook to track. It might help to pick a device other than your own, log out of Facebook, or create a secondary testing Facebook account to do the activity.
To do this, visit the Ads Manager by clicking that link, or navigating to it on Facebook yourself. Make sure you're logged into the right account, the one tied to your Page that generated the pixel for your website.
On the Ads Manager dashboard, there is a Pixels tab. Click on that, and you'll see a list of the pixels you have generated. Find the relevant pixel in the list, and look at the header for it. On the right side of the header, you should see a green dot and a date and time, which is the time the pixel activity last updated.
If you don't see the green dot and the activity marker, go do a little more activity and come back later to see if it is recorded. Sometimes there's a bit of delay in the pixel's reporting, simply because of how much data Facebook is processing at any given time. If it doesn't report after a few hours, though, or after a day, you'll probably want to start looking for issues.
Facebook developed a tool called the Pixel Helper. It's a simple app, a plugin for Chrome, that allows you to analyze the pixel code on any website you visit. You can read more about it here. If it looks like an easy-to-use tool, you can click here to install it.
When you install this plugin, a code symbol will appear on your browser toolbar that looks like . If you're on a page that does not have an active pixel, it will be gray. If there is a pixel, but it is broken, it will show as blue with a red number on it. Clicking on it will show you a brief diagnosis of the problem, which you can use to figure out a solution. If there are active pixels with no errors, a green number will appear, indicating the number of pixels active on the site.
To use it, simply make sure you have Google Chrome installed, and using Chrome, go to the Chrome Web Store (or click the link above) to install the Pixel Helper plugin. Once installed, navigate to your site. It should pop up a green number, indicating that your pixel has loaded.
You can click on the pixel helper icon to see more information about the pixel on the site as well. It can show the data parameters set, the setup method, the URL called, the code of the pixel and its location, and more.
Incidentally, this can be a useful tool if you want to browse competitor sites and see what kind of tracking systems they have installed (if they're doing Facebook tracking at all). It's also useful to see just how many sites use Facebook tracking out there. Hint: It's a lot of them.
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