Newsletters
News & Information for Technology Purchasers NewsFactor Sites:       NewsFactor.com     Enterprise Security Today     CRM Daily     Business Report     Sci-Tech Today  
   
This ad will display for the next 20 seconds. Please click for more information, or scroll down to pass the ad, or Close Ad.
Home Enterprise I.T. Cloud Computing Applications Hardware More Topics...
Vblock™ Systems:
Advanced converged infrastructure
increases productivity & lowers costs.

www.vce.com
World Wide Web
Tame your scariest paperwork. Find Out How
Average Rating:
Rate this article:  
Largest DDoS Attack Ever Is Over; Used Unsecured DNS
Largest DDoS Attack Ever Is Over; Used Unsecured DNS

By Barry Levine
March 28, 2013 11:20AM

    Bookmark and Share
The attackers used an amplified DNS reflection technique, in which a DNS request is sent that pretends to come from the victim site, and the unsecured DNS server responds to the site. DNS servers that have not been properly secured can amplify an incoming request, resulting in responses that could be 50 times the request, overwhelming the victim site.
 


The good news is that the largest cyberattack in history is over, and the Net is still standing. The bad news: It could happen again.

The Internet was caught in the crossfire between Spamhaus, a Europe-based non-profit that fights spam, and CyberBunker, a Dutch hosting facility. Spamhaus said it traced substantial streams of spam emanating from CyberBunker, and they put CyberBunker on a blacklist they send to e-mail services, thus resulting in millions of inboxes being blocked from those streams.

Spamhaus' efforts have been estimated to filter out an estimated 80 percent of spam, and many industry observers consider it critical to maintaining a workable global e-mail system. CyberBunker says it is "the only true independent hosting provider in the world," and it will allow customers to host anything, anonymously, except "child porn and anything related to terrorism."

'Scourge of the Internet'

CyberBunker countered the blacklisting with the largest Distributed Denial of Service (DDoS) attack in history. The attack centered on Spamhaus's DNS servers, which are deliberately spread around the globe in order to lessen any counterattack, but the downside was that the volume of the attack was so great, the spillover then clogged the Net around the world. According to Spamhaus, the attacks at their peak were about 300 gigabits per second, compared with attacks against major banks that average in the 50 Gbps range.

During the attack, Spamhaus requested help from California-based security firm CloudFlare. The attackers used an amplified DNS reflection technique, in which a DNS request is sent that pretends to come from the victim site, and the unsecured DNS responds to the site. DNS servers that have not been properly secured can amplify an incoming request, resulting in responses that could be 50 times the request. When those responses are amplified, the traffic can overwhelm the victim site.

Domain Name System computers translate the text in Web addresses into numerical IP addresses that computers use, so if a DNS server is unavailable, Web users routed to that server cannot access Web sites.

In a posting on its corporate blog last week, CloudFlare's Matthew Prince joined others who have noted that DNS servers are a vulnerable spot in the Web.

"Open DNS resolvers are quickly becoming the scourge of the Internet," Prince wrote, "and the size of these attacks will only continue to rise until all providers make a concerted effort to close them." (continued...)

1  |  2  |  Next Page >

 

Tell Us What You Think
Comment:

Name:



APC has an established a reputation for solid products that virtually pay for themselves upon installation. Who has time to spend worrying about system downtime? APC makes it easy for you to focus on business growth instead of business downtime with reliable data center systems and IT solutions. Learn more here.


 World Wide Web
1.   Google Maps, Now with Time Travel
2.   NYPD Twitter Campaign Backfires
3.   Net Gets Faster, But Easier to Attack
4.   Verizon Report Exposes Cyberthreats
5.   Aereo CEO Speaks Out on Future


advertisement
Product Information and Resources for Technology You Can Use To Boost Your Business

Network Security Spotlight
Tech Giants Fund Initiative To Prevent Future Heartbleeds
Can more funding prevent Heartbleed vulnerabilities in future open-source software? A new Core Infrastructure Initiative at the Linux Foundation is attempting to find out.
 
What Verizon's Data Breach Report Can Teach Enterprises
It’s probably not a jaw-dropper, but cyberespionage is officially on the rise. And the use of stolen or misused credentials is still the leading way the bad guys gain access to corporate information.
 
Top Cyberthreats Exposed by Verizon Report
Beyond Heartbleed, there are cyberthreats vying to take down enterprise networks, corrupt smartphones, and wreak havoc on businesses. Verizon is exposing these threats in a new report.
 

Navigation
NewsFactor Network
Home/Top News | Enterprise I.T. | Cloud Computing | Applications | Hardware | Mobile Tech | Big Data | Communications
World Wide Web | Network Security | Data Storage | Small Business | Microsoft/Windows | Apple/Mac | Linux/Open Source | Personal Tech
Press Releases
NewsFactor Network Enterprise I.T. Sites
NewsFactor Technology News | Enterprise Security Today | CRM Daily

NewsFactor Business and Innovation Sites
Sci-Tech Today | NewsFactor Business Report

NewsFactor Services
FreeNewsFeed | Free Newsletters | XML/RSS Feed

About NewsFactor Network | How To Contact Us | Article Reprints | Careers @ NewsFactor | Services for PR Pros | Top Tech Wire | How To Advertise

Privacy Policy | Terms of Service
© Copyright 2000-2014 NewsFactor Network. All rights reserved. Article rating technology by Blogowogo. Member of Accuserve Ad Network.