Twitter continues to battle DDoS attack

Evidence suggests the attack is politically motivated and aimed at silencing a Georgian activist

More than two days after experiencing a complete outage as a result of a distribute denial-of-service (DDoS) attack, Twitter and other social networking sites such as Facebook are still battling a surge in traffic related to the attack. Twitter has taken some steps to mitigate the spike in traffic and ensure that the site is not knocked offline again, but some of those steps are having an impact on third-party tools that link to Twitter through API's (application programming interface).

Evidence gathered thus far from Twitter and other sites targeted by the DDoS attacks seems to suggest that the attack is actually a politically motivated attack aimed at silencing a Georgian activist. The victim, known by the online handle Cyxymu, uses blogs and social media sites like Twitter and Facebook to express views related to the tensions between Russia and Georgia. In a blog post, Mikko Hypponen, Chief Research Officer of Internet security firm F-Secure, said "Launching DDoS attacks against services like Facebook is the equivalent of bombing a TV station because you don't like one of the newscasters.

To defend itself against the ongoing DDoS attack, Twitter has implemented various defensive actions, some of which are blocking third-party Twitter applications from being able to connect with Twitter API's. The mitigating steps are also affecting the ability of many users to post to their Twitter accounts via SMS (short message service) text messages.

Twitter is working diligently for a more permanent solution that doesn't impact third-party applications or SMS messaging. In the meantime though, Twitter has stated that as long as the attacks continue they can't guarantee that things will get better or provide any assurances that they won't get worse. The best they can do is to promise to do everything they can as fast as they can to ensure the site remains available.

Other steps that can be taken involve identifying and isolating sources of attack traffic and simply dropping all incoming packets from those sources. That can have some affect, but when an attack leverages a botnet and the attack traffic is literally coming from hundreds of thousands of sources simultaneously it quickly becomes cumbersome and impractical to try and filter the traffic in this way. Another temporary solution could be to filter all traffic intended for the suspected victim, Cyxymu, and block that so that it does not hog the network bandwidth or server processing horsepower.

When the dust settles, Twitter should look at ways they can build scalability and redundancy into their network to better withstand similar attacks in the future. Stuart McClure, VP of Operations and Strategy for McAfee's Risk and Compliance Unit and co-author of Hacking Exposed 6, says "Many of these newly emerging social engineering sites weren't built with security or high performance scalability in mind. They need to look at their current and desired states and make tough decisions that migrate them from homegrown applications to highly available cornerstones of commerce."

Tony Bradley is an information security and unified communications expert with more than a decade of enterprise IT experience. He provides tips, advice and reviews on information security and unified communications technologies on his site at tonybradley.com.

Join the Good Gear Guide newsletter!

Error: Please check your email address.

Tags ddossecuritytwitter

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.

Tony Bradley

PC World (US online)
Show Comments

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

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 x360

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 910

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.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?