Yes. Facebook/Meta was using a locally hosted proxy to get info smuggled back without using routes that are increasingly obstructed by things like ad blockers i

Yes. Facebook/Meta was using a locally hosted proxy to get info smuggled back without using routes that are increasingly obstructed by things like ad blockers if I recall correctly. https://securityonline.info/androids-secret-tracking-meta-yandex-abused-localhost-for-user-data/ https://securityonline.info/androids-secret-tracking-meta-ya... Search string for DDG: Meta proxy localhost data exfiltration