The phrase is a time capsule. It points to a specific piece of software (Netsnap), a specific search technique (the intitle: operator), and a specific phenomenon (finding unsecured camera feeds).
: This reveals web servers currently broadcasting a live stream or static image snapshots from a NetSnap-connected camera. Ethical Note live netsnap cam server feed englischer facharbei exclusive
Modern cameras from brands like Nest or Axis have much more robust security, but they still occasionally suffer from misconfigurations. The phrase is a time capsule