A majority of apps and services by Meta track users activity and personal information.
Its no news for people who keep up with tech news(looking at you techworm readers).
Well, these browsers inject a javascript code into each website that you visit.
This allows the parent company, Meta, to potentially track you across several websites.
This issue was discovered by researcher Felix Krause.
Consequently, Felix Krause focused his research on iOS versions of Instagram and Facebook.
In defense, a Meta spokesperson stated that the injected tracking code obeyed users preferences on ATT.
He further added that We do not add any pixels.
Code is injected so that we can aggregate conversion events from pixels.
Luckily WhatsApp (owned and operated by Meta) doesnt modify third-party websites in a similar way.
So if Meta wants they can implement similar features on Facebook and Instagram.
source: www.techworm.net