A platform certificate is the system signing certificate used to sign the android system on the system image.
Therefore, Samsung and other smartphone brands have already taken remediation measures to minimize the user impact.
OEM partners promptly implemented mitigation measures as soon as we reported the key compromise.
End users will be protected by user mitigations implemented by OEM partners.
Google Play Protect also detects the malware.
There is no indication that this malware is or was on the Google Play Store.
As always, we advise users to ensure they are running the latest version of Android.
source: www.techworm.net