The public is invited to attend an eye-opening seminar Tuesday focusing on modern facts of life that many people may not want to hear. “The intended audience is adults,” the announcement from Homeland Security Investigations warned in announcing its iGuardian seminar to be held at the DeKalb County Complex auditorium from 6 to 8 p.m., Tuesday, Sept. 4. “Some of the content discussed will include sexting, sextortion, teen suicide, dark net child pornography sites and apps used by kids to meet predators.”