Smartphone manufacturers frequently go to enormous lengths to help keep our devices secure. Part of that role is regulatory, keeping unwanted apps out of centralized app stores. Other protections are technical, using software to keep one step ahead of ne’er-do-wells. One such technical protection is code signing, allowing developers to use an encryption key to let end users verify that code came from a known trusted source; this is why you can safely sideload updates to Google’s Android apps ...
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