Thousands of pagers exploded across the country, killing at least 12 people, including children, and injuring thousands. As the country was mourning the dead, walkie-talkies started detonating on Wednesday. The fresh attack killed at least 25 and left over 600 injured. Who is behind this attack? All fingers point to Israel's secretive cyberwarfare unit - Unit 8200. What is this secretive unit? And how did they pull this off?
