Law enforcement have arrested a nanny based in Boston on suspicion of sharing child sexual abuse material (CSAM) over the messaging app Kik. An investigation was launched into 36-year-old Roxbury resident Stephanie Lak by the Boston Police Department Crimes Against Children Unit following the submission of a cyber-tip to the National Center for Missing and Exploited Children (NCMEC) on March 2. Kik’s operator, MediaLab, notified NCMEC of an IP address that had been used to send at least eight files containing images of children aged five or younger being sexually abused. Police traced the address back to Lak and obtained a search warrant for her home, which was executed on April 15. A laptop and three cellphones were seized by police as evidence from a boarding house on Woodville Street.