Security Now

Apr 21st 2015

Security Now 504

Great Firewalls & Cannons

What is the Great Firewall and how does it work?
Records live every Tuesday at 4:30pm Eastern / 1:30pm Pacific / 20:30 UTC.
Hosts: Steve Gibson with Leo Laporte TrueCrypt audit follow up, Google search history dump, and Steve Gibson and Leo Laporte take a close look at the mechanisms China has developed - both filtering and offensive weaponry - to provide for their censorship needs and to potentially attack external internet targets. Download or subscribe to this show at We invite you to read, add to, and amend our show notes. You can submit a question to Security Now! at the GRC Feedback Page. Please take the TWiT Audience Survey. It only takes a few minutes and we'd love to know what you think. For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site:, also the home of the best disk maintenance and recovery utility ever written Spinrite 6. Bandwidth for Security Now is provided by Cachefly. Running time: 1:59:17