Malware on your phone can reroute your calls to the attacker. So you think you're calling the official number at the correct institution, but you're actually talking to the attacker.
Malware on your phone can reroute your calls to the attacker. So you think you're calling the official number at the correct institution, but you're actually talking to the attacker.
Well, yeah, and knowing first-aid is worthless if someone's been decapitated. :p
If some malware is that deep on the phone, able to redirect calls, then you've got much bigger problems and the attacker might not even need to trick any cooperation at all.
What kind of malware are we talking about here? On a non-rooted phone?
It was in the news a few times in my country. Not sure about the exact technical details, but it might have been a malicious app that advertises itself as an improvement over the stock Phone app, encouraging users to set it as the default dialer. You don't need root for that.