How can a DDoS attack on a single company slow down the entire internet?

ernard

The news wires have been reporting the largest DDoS attack in history is taking place today against a company called Spamhaus. I haven't noticed much of an impact, but the news reports suggest that the effect is being felt by companies including Netflix. How can a single attack have such a wide impact?

Topic: Security
Answer this Question

Answers

3 total
jimlynch
Vote Up (17)

Here's a good overview of DDoS attacks.

Denial-of-service attack
http://en.wikipedia.org/wiki/Denial-of-service_attack

"In computing, a denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a machine or network resource unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of the efforts of one or more people to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet.
Perpetrators of DoS attacks typically target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even root nameservers. This technique has now seen extensive use in certain games, used by server owners, or disgruntled competitors on games such as Minecraft and League of Legends. The term is generally used relating to computer networks, but is not limited to this field; for example, it is also used in reference to CPU resource management.[1]

One common method of attack involves saturating the target machine with external communications requests, so much so that it cannot respond to legitimate traffic, or responds so slowly as to be rendered essentially unavailable. Such attacks usually lead to a server overload. In general terms, DoS attacks are implemented by either forcing the targeted computer(s) to reset, or consuming its resources so that it can no longer provide its intended service or obstructing the communication media between the intended users and the victim so that they can no longer communicate adequately.

Denial-of-service attacks are considered violations of the IAB's Internet proper use policy, and also violate the acceptable use policies of virtually all Internet service providers. They also commonly constitute violations of the laws of individual nations."

Christopher Nerney
Vote Up (16)

It's because the attackers worked their way upstream from the original target, as this ITworld article explains:

 

The attackers ultimately targeted Tier 1 providers, which operate the networks at the core of the Internet, and Internet Exchanges (IX), critical nodes located around the world that connect large networks like those of Google, Facebook, Yahoo and pretty much every major Internet company.

 

 

henyfoxe
Vote Up (11)

And cue conspiracy theories from The Guardian in 3.....2......1........conspiracy theory!

Ask a question

Join Now or Sign In to ask a question.
A vulnerability broker published a video demonstrating one of several flaws it has found in the privacy-focused Tails operating system, which is used by those seeking to make their Web browser harder to trace.
Juniper Networks has divested its mobile security product line, selling the assets to a private equity firm for $250 million.
Six people have been indicted on charges of running an international ring that resold tickets bought through compromised StubHub accounts for some of New York's biggest concerts and sporting events.
Dutch intelligence services can receive bulk data that might have been obtained by the U.S. National Security Agency (NSA) through mass data interception programs, even though collecting data that way is illegal for the Dutch services, the Hague District Court ruled Wednesday.
The TOR Project thinks it has figured out how the author of a canceled Black Hat talk cracked its software to mask the source of Internet traffic, and it is working on a patch.
Businesses wanting the security of BlackBerry Enterprise Service 10 without the complexity of managing it onsite can now buy it as a hosted service from six BlackBerry partners.
A ransomware threat that encrypts files stored on the SD memory cards of Android devices has been updated to target English-speaking users with FBI-themed alerts.
A vulnerability in a web-based graphics system led to a breach of The Wall Street Journal's network by a hacker, the newspaper acknowledged late Tuesday.
A company that specializes in selling information on software vulnerabilities has reignited a debate over the handling of such information, especially when it pertains to privacy-focused tools.
Developers of Tor software believe they've identified a weakness that was scheduled to be revealed at the Black Hat security conference next month that could be used to de-anonymize Tor users.

White Papers & Webcasts

Webcast On Demand

Transform Your IT Service Management

Sponsor: EasyVista

See more White Papers | Webcasts