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OCBC Bank locks out mobile app if 3rd party apps are detected
(www.zdnet.com)
This is a most excellent place for technology news and articles.
It's a default permission which can't be revoked.
Wow that seems like a strange permission to have as default. It doesn't seem like very many apps have a legitimate need for listing other installed apps unless I'm missing something.
https://www.engadget.com/google-restriction-apps-that-can-see-other-apps-111037925.html
Plugins and addons for other apps is probably the original motivator for this. Also handy to check if an app is present to listen to the intent signal you're about to send out.
Of course, then the malware/spyware writers got ahold of it and here we are. Something with good intentions and assholes come along and ruin it for everyone. Kinda like pop up windows and cookies.