Why Exactly The Permission List Does Not Resolve This

An add-on keeps reaching out to its server — is that expected?


The question arises for anyone who has ever opened a network monitor with extensions installed. Traffic from an empty tab appears worrying, and working out who is sending it and why is hard at first sight. It is worth learning how to distinguish a innocuous update from telemetry.


I set up a popular extension for tabs, and everything works. But the network monitor shows it hitting some third-party domain once a minute, even when the tab stays idle. The description doesn't mention it. Is this tracking, or am I overthinking it?


The first move is to separate yours from theirs: turn off all extensions at once and check whether the background noise stops. If it goes quiet, the cause is one of them, and you switch each back on individually until the traffic reappears. That isolates the culprit in a couple of minutes, no guessing.



If there is still no answer, an easy test helps: a required update goes to the author's domain and to the point, while telemetry runs continuously, in the background, to a third-party server. The second type nearly always hides in the settings behind a toggle no one knows about.


Why exactly the permission list does not resolve this


Access to tabs in the manifest and sending their list outward are two different things, and a single permission line can't tell them apart. On paper the extension honestly declares access; what it does with that access is not apparent from the manifest. So look at the traffic, not the permission list.



It is easier not to guess each time and keep WordPress plugins for webmasters handy — ones that say plainly they gather nothing. And this tab task is painless to close with a telemetry-free swap — bookmarks next to search results, works the same and doesn't call home.



Reviews of this sort are useful not for paranoia but for the habit: a few minutes with the network monitor after installing, and "pinging somewhere" turns into a plain picture of what goes where.