Want better video quality? Sign in to access HD streaming!
×Want to watch better-quality PBS Video? Sign in to access HD streaming!
When you sign in, you'll become a PBS Insider and we'll share your contact information with your local PBS station. You may receive updates to help you stay connected with what's happening online and in your community. Privacy Policy
NOVA
S43 Ep16: 15 Years of Terror
- Aired: 09/08/2016
- 54:30
- Expires:
- Rating: NR


LEARN MORE
Manhunt—Boston Bombers
Which technologies worked—and which didn't—in the race to track down the men behind the marathon attack?
CyberWar Threat
As internet connections multiply so do points of attack and risks to national security.
The Cybersecurity Lab
Take cybersecurity into your own hands by thwarting a series of increasingly sophisticated cyber attacks.
Edward Snowden on Cyber Warfare
The former NSA contractor sat down with NOVA to discuss the perils posed by cyber warfare.
Report Video Problem
Before you submit an error, please consult our Troubleshooting Guide.
Your report has been successfully submitted. Thank you for helping us improve PBS Video.

PBS KIDS
Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Masterpiece Collection
Own it now! Victoria, Poldark, Downton Abbey on DVD & Blu-ray. Visit ShopPBS.