Worm

Spread across machines

• Similar to viruses, but they spread between machines
• Some exploit bugs
• Some require manual intervention (e.g "click here to download the latest Justin Timberlake song").
• Some require social engineering (e.g "click here to download Jennifer Lawrence naked pictures").

Stuxnet

Watch the Stuxnet TED talk

• One of the most sophisticated known cyber attackers
• Generall attributed to the US and Israel
• Used four different "0-day" attacks - created by a sophisticated party
• Spread via USB sticks and on-LAN attacks
• Virus can be spread in form of worms
• Major targets are developed countries