Mode was not designed to protect your privacy
you want to conceal the fact you're about to propose to your
partner by doing some covert ring shopping on Incognito Mode, do
it! But if you expect IM to protect you against the many, many
privacy pitfalls inherent to browsing the modern-day web, be
aware that's not its purpose. In fact, Fisher explained that the
Chrome team agonized over what to call IM it in the beginning,
intentionally steering away from including "privacy" in the
name, because it didn't want to oversell its ability.
you launch the Incognito tab there’s this disclaimer there where
we really try to help make it really clear to people that your
activity is certainly still visible to the websites you visit
and could be visible to your employer, to your school your, and
to your ISP [internet service provide] of course," he says.