Most of us share documents via email. But what if it’s a digital copy of your birth certificate, a sensitive medical record, or a confidential legal document? I want to ensure that only the intended ...

You never know when one of your files might reach someone it wasn't intended to reach—perhaps through an email forward, a USB stick left behind on a desk, or maybe ...

This week a reader writes, “In (a recent) column you mentioned that you keep some of your passwords in your iPhone in a locked note. Could you please explain how one locks a note? It sounds So useful.