The AT&T website has many videos available. They have a weekly series, "AT&T ThreatTraq", formerly known as the "Cyber Threat Report". This week's report discuss the week's top cyber security news, and share news on the current trends of malware, spam, and internet anomalies observed on the AT&T Network. Older videos are available discussing a wide variety of cyber security topics. (The bottom portion of the frame has an index of other available videos).
In addition, this website has historical AT&T films dating back decades. This includes instructions on how to dial for subscribers being converted from manual to dial service, how long distance calls are placed in 1940 (all toll ticket handling was completely manual, handled by a battery of clerks), introduction of various new services, new Bell Labs inventions, and telephone courtesy.
The 1941 Long Distance Service video may be viewed at: