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I don't remember a company like whatsapp having this kind of problems.

(note that this is not a complete list) CVE-2021-24026 CVE-2021-24027 CVE-2020-1891 CVE-2020-1909 CVE-2019-11933

Perhaps you should consider that not knowing a thing is very, very different than that thing not being true...

Just FYI, the grammatically correct phrase would be "these kinds of problems" when plural versus "this kind of problem" when singular.