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App Store to Be 'Split in Two' Ahead of EU iPhone Sideloading Deadline
(www.macrumors.com)
This is a most excellent place for technology news and articles.
Not really, it's not much of an issue on Android. iOS will probably do the same, but on Android if you sideload an app that could be malicious, the Play Store has play protect and scans malicious apks like an anti virus. But also phones are much better sandboxed and secured then desktop, so their security against malicious software is much stronger.