I work at a digital security company and thought I was keeping my kids safe from online dangers. My 7-year-old proved me wrong

kieferpix/Getty Images Kristin Lewis designs products at Aura, a digital security company. She was surprised when her 7-year-old managed to make an unauthorized purchase. That led to a more open dialogue and weekly tech check-ins with her kids. This as-told-to essay is based on a conversation with…