At the front lines of protecting the Internet

VeriSign's CTO on securing the DNS infrastructure and whether new identity certificates add any value

InfoWorld interviewed CTO Ken Silva on the company's current and past challenges. Silva manages VeriSign's technical operations, which handle much of the world's DNS traffic and cryptographically protect millions of Web sites. Before joining VeriSign, Silva spent 10 years with the National Security Agency (NSA). Roger asked about VeriSign's current status and future plans. Here are some excerpts from that interview:

In the first part of this decade, the global DNS infrastructure came under a few big denial-of-service attacks that caused service disruptions, but in the last few years, we haven't seen any significant service outages. How well have we done in making DNS resistant to DoS attacks?

VeriSign services have never completely been taken out from a DoS attack because of our distributed nature. We do get DDoS [distributed DoS] attacks, and they are getting bigger, and bigger, and bigger, but they haven't affected us that greatly. In February 2006, we launched our Project Titan initiative, in response to our growing legitimate services and to handle DDoS attacks in the multiple tens of gigabytes. Our goal was to fortify the infrastructure to over 10 times the predicted infrastructure needed. Project Titan will increase bandwidth 10,000 times the 2000 levels by 2010. It's already at 1,000 times the size today [as compared to the 2000 levels], and will be another 10 times today's level in the next two years. It will be able to handle 4 trillion queries a day.

Why are DNSSec and any of the other "advanced" DNS security proposals slow to gain more widespread acceptance?

These are complicated technologies, and you have to agree to get the entire world to agree on the standard, what makes up the standard, and do it at the same time. That alone makes it difficult.

Join the PC World newsletter!

Error: Please check your email address.

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Roger A. Grimes

InfoWorld
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Michael Hargreaves

Windows 10 for Business / Dell XPS

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?