Security News > 2021 > April > Firefox 88 patches bugs and kills off a sneaky JavaScript tracking trick
The "Problem child" that Firefox just addressed is a lesser-known JavaScript variable called window.
Specifying an existing tab name in the target of the link means that we can re-use the second tab for our new content, so that the example.com page opens up in the same NEWTAB tab, replacing the Naked Security content and avoiding the creation of a third tab.
Here's the difference - we repeated the above activity in the developer console, this time using the new Firefox 88.
As you'd expect from a four-weekly Firefox release, there are also numerous security fixes in the 88.0 version.
Following Mozilla's usual terminology, the Firefox developers have documented all these bugs with an admission that "We presume that with enough effort some of these could have been exploited to run arbitrary code."
If you're on Windows or Mac, go to Help > About Firefox or to Firefox > About and check if you are up-to-date.