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. Click for more information, or
Home Enterprise I.T. Cloud Computing Applications Hardware More Topics...
World Wide Web
Is your endpoint data protected?
Average Rating:
Rate this article:  
Lessons Learned in Historic DDoS Attack on Spamhaus

Lessons Learned in Historic DDoS Attack on Spamhaus
By Barry Levine

Share
Share on Facebook Share on Twitter Share on Linkedin Share on Google Plus

The DNS amplification vulnerability, which was exploited to the fullest in the attacks on Spamhaus, return incoming requests to a DNS server with as much as 100 times as much data. When the attackers have faked the source address for those incoming requests, the responses can overwhelm the victims' servers -- and possibly spill over and clog the Net.
 



What is the aftermath of the massive Distributed Denial of Service attacks recently on the anti-spam Spamhaus organization? As the largest such attack in history, the digital assault on Spamhaus slowed network performance in some regions of Europe and elsewhere, raised alarms about whether the Net could reach a breaking point, and has become a historic event that could mark a turning point.

According to reports in The New York Times and elsewhere, a key figure in the attacks appears to be Sven Olaf Kamphuis, who is associated with CyberBunker, the Dutch hosting facility where the attacks originated. After the Europe-based Spamhaus put CyberBunker on its spam blacklist, because of what Spamhaus said were substantial streams of spam e-mails coming from that hosting facility, the DDoS attacks began.

Kamphuis maintains a Facebook page, in which he champions hosting services such as CyberBunker for providing open Net access, and he rails against Spamhaus for acting like an arbitrary authority.

Like 'The Mafia'

CyberBunker has said it will allow customers to host anything except "child porn and anything related to terrorism." Spamhaus is backed by a variety of e-mail services, and experts have testified in court that many e-mail services would be rendered useless by the flood of spam if not for the organization's efforts.

But this massive wave of DDoS attacks -- in which Web servers are overwhelmed by a flood of bogus traffic -- broke some boundaries, according to Garth Bruen, an adviser to the consumer-oriented Digital Citizens Alliance. Bruen told USA Today that the attacks from CyberBunker were like "the kind of things we saw the mafia do to take control of neighborhoods 50 years ago."

He added that what was particularly "troubling" is that CyberBunker is a commercial ISP "working with shadowy figures in undisclosed locations."

Open DNS Resolvers

The attacks have highlighted some ongoing weaknesses in the Internet's infrastructure. Key among these are open Domain Name System resolvers, which allow attackers to engage in so-called DNS amplification. One of the weaknesses of open resolvers is that they do not authenticate a sender's address before replying.

This vulnerability, which was exploited to the fullest in the attacks on Spamhaus, return incoming requests to a DNS server with as much as 100 times as much data. When the attackers have faked the source address for those incoming requests, the responses can overwhelm the victims' servers -- and possibly spill over and clog other parts of the Net.

DNS servers are critical to the Internet as they translate alphanumeric-based Web addresses like "www.google.com" into the numeric IP addresses that computers can understand.

The Spamhaus attacks reportedly utilized more than 30,000 unique DNS resolvers. There are efforts, such as the Open DNS Resolver Project, to convince DNS administrators to implement source address validation, among other actions, to eliminate open DNS resolvers as a Net-wide weakness.

There are also calls for IT departments and individual PC owners to make a greater effort to scan their computers for signs of malware that could be hijacking their machines into becoming part of a botnet. Additionally, the Electronic Frontier Foundation and others have offered tips to small businesses on how to cope with DDoS attacks, if their sites become one of the direct or indirect targets.
 

Tell Us What You Think
Comment:

Name:



Protect 100% of your Data The prevalence of laptops and mobile devices in the enterprise makes corporate data increasingly vulnerable to loss and breach. And yet, workforce productivity is now inextricably linked to mobility. Click here to access the white paper "Top 10 Endpoint Backup Mistakes" to learn more about how to confidently protect data across platforms and devices while also providing features designed to enhance the end user experience.


 World Wide Web
1.   Twitter May Remove Pics of Deceased
2.   Google IPO Began Decade of Big Bets
3.   Assange Talks of Leaving Embassy
4.   Russian Hacker To Be Held Until Trial
5.   Online Sites vs. Retailing in India


advertisement
OkCupid Experiments with Daters
Unethical without user consent?
Average Rating:
Twitter May Remove Pics of Deceased
Balancing privacy and public interest.
Average Rating:
Online Retailers Ponder Actual Stores
'Click-and-mortar' shops popping up.
Average Rating:
Product Information and Resources for Technology You Can Use To Boost Your Business

Network Security Spotlight
Researchers Find Malicious Android Apps Can Hack Gmail
A new study shows that a weakness in the Android mobile operating system can be used to steal sensitive, personal info from unwitting users. Gmail proved to be the easiest app to attack; Amazon, the hardest.
 
UPS Stores in 24 States Hit by Data Breach
Big Brown has been breached. UPS said that about 105,000 customer transactions at 51 of its UPS Store locations in 24 states could have been compromised between January and August.
 
Cost of Target Data Breach: $148 Million Plus Loss of Trust
The now infamous Target data breach is still costing the company -- and its shareholders -- plenty. In fact, the retailing giant forecast the December 2013 incident cost shareholders $148 million.
 

Enterprise Hardware Spotlight
Acer's New Desktop Box Rides the Chrome OS Wave
Filling out its Chrome OS line, Acer is following the introduction of a larger Chromebook line earlier this month with a new tiny $180 desktop Chromebox and also a smaller Chromebook.
 
Feds OK $2.3 Billion IBM-Lenovo x86 Server Deal
IBM and Lenovo are celebrating U.S. approval of their x86-based server deal, having cleared some major security hurdles. The deal makes Lenovo a major player for enterprise data centers.
 
Three New Lenovo PCs Aimed at Business Users
With businesses wanting computing solutions that do more for less money, Lenovo has unveiled three new desktop PCs that it says offer solid computing at a budget-minded price.
 

Mobile Technology Spotlight
Screen Shortage Briefly Puts Brakes on iPhone 6
RAM? Check. Antenna switch? Check. Screen? Oops. Parts suppliers for Apple have found themselves facing a shortage of screens for the new iPhone 6 as next month's release date for the new smartphone looms.
 
Bounty Offered to Coders for Oculus Rift Bugs
Coders who find bugs in software for the Oculus Rift VR immersive headset could receive a reward of at least $500 under Facebook's White Hat bounty program. Facebook acquired Oculus in March.
 
Google Glass Adds Voice Access to Phone Contacts
The latest update to Google Glass will let users access their top 20 phone contacts with voice commands alone. A user can then choose a phone call, Google hangouts, e-mail or text messaging.
 

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 | CRM Systems | 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

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.