Slack rolled out a new feature this week to let people connect with anyone, even if they don’t work in the same company. One flaw became immediately obvious: Anyone with your email address could send you a connection invite and a message that could be harassing or harmful. Slack promptly changed the feature, and invites no longer contain customized messages. But it made us wonder: How can companies do a better job anticipating how features could be harmful and fix them before they get rolled out? Molly speaks with Sarah Kunst, managing director of Cleo Capital.