Recruiter reached out via LinkedIn about an open opportunity. Even though I wasn't looking for a new position, I replied that I'd be open to hearing more about the position. Worked with the recruiter to nail down a time to talk. Recruiter confirmed the time of the meeting the day before, but never actually called at the designated time and never sent a follow up email to apologize for missing the call. I've always liked CS from a marketing perspective, but this seemed very unprofessional. There's a fairly small pool of product marketers with cybersecurity expertise, so probably not a good idea to burn bridges.