Is Synclify - Watch in sync with your friends safe?

Question

Accepted Answer

Synclify - Watch in sync with your friends is medium risk. When Synclify cannot find a video on a page, it sends an analytics event to api.synclify.party/m that includes the full page URL. The event is tied to a PostHog distinct ID stored in the extension's local storage, so repeated failures can be associated with the same browser profile. When the relevant user action occurs, Synclify registers a persistent MAIN-world content script for the active tab origin. That script changes page-level browser APIs related to DOM behavior and cookies, including webdriver, cookie, timer, eval, navigation, history, window.open, and some fetch behavior.

Is Synclify - Watch in sync with your friends safe?

Findings