DDoS Attack

DDoS Attack / Most Viewed

Protecting the Internet: Certified Attachments and Reverse Firewalls?

In many respects the internet is going to hell in a hand basket. Spam, phishing, DNS poisoning, DDoS attacks, viruses, worms, and the like make the net a sick place. It is bad enough that bad folks are doing this. But it is worse that just about every user computer on the net offers a nice fertile place for such ill behavior to be secretly planted and operated as a zombie under the control of a distant and unknown zombie farmer. ...Some of us are coming to the converse point of view that the net is being endangered by the masses of ill-protected machines operated by users. more

Understanding the Threat Landscape: Indicators of Compromise (IOCs)

I previously provided a brief overview of how Verisign iDefense characterizes threat actors and their motivations through adversarial analysis. Not only do security professionals need to be aware of the kinds of actors they are up against, but they should also be aware of the tactical data fundamentals associated with cyber-attacks most commonly referred to as indicators of compromise (IOCs). Understanding the different types of tactical IOCs can allow for quick detection of a breach... more

Botnets Shift Focus to Credential Abuse, Says Latest Akamai Report

Akamai's Fourth Quarter, 2017 State of the Internet, was released today in which it states that the analysis of more than 7.3 trillion bot requests per month has found a sharp increase in the threat of credential abuse, with more than 40 percent of login attempts being malicious. more

Emerging Cyber-Security Threats and Implications for the Private Sector

The new gTLD program will have a profound impact on the private sector's increasing dominance over Internet information resources and ownership of critical registry technical infrastructure assets. It is already anticipated that only the private sector will take full advantage of the commercial possibilities... However, the successful introduction of new gTLDs will also create new challenges of security for the private sector. more

CircleID’s Top 10 Posts of 2009

Looking back at the year that just ended, here are the top ten most popular news, blogs, and industry news on CircleID in 2009 based on the overall readership of the posts. Congratulations to all the participants whose posts reached top readership in 2009 and best wishes to the entire community in 2010. more

Verisign’s Perspective on Recent Root Server Attacks

On Nov. 30 and Dec. 1, 2015, some of the Internet's Domain Name System (DNS) root name servers received large amounts of anomalous traffic. Last week the root server operators published a report on the incident. In the interest of further transparency, I'd like to take this opportunity to share Verisign's perspective, including how we identify, handle and react, as necessary, to events such as this. more

New CSC Research Finds Significant Lack of Redundancy for Enterprise DNS

As outlined in CSC's recent 2020 Domain Security Report: Forbes Global 2000 Companies, cybercriminals are disrupting organizations by attacking the protocol responsible for their online presence -- their domain name system (DNS). When a DNS is overwhelmed with traffic due to a distributed denial of service (DDoS) attack or configuration error, content and applications become inaccessible to users, affecting both revenue and reputation. more

8 Security Considerations for IPv6 Deployment

Feb. 3, 2011, came and went without much fanfare, but it was a milestone for Internet stakeholders, whether they knew it or not. On that Thursday, the last available IPv4 addresses were allocated by the Internet Assigned Numbers Authority (IANA). Though some Regional Internet Registries (RIRs) have a reasonable inventory of IP addresses that could last another year or two, the days of "new" IPv4 address allocations are largely over. more

Wikileaks DDoS of Spamhaus: Political Activism at Its Dumbest

A week ago, Paul Vixie wrote a thoughtful piece on the morality of DDos, for both sides of the equation of the Wikileaks issues. In it he summarizes things nicely: "Denial of service is not merely a peaceful protest meant to garner attention for a cause. Denial of service is forcible and it is injurious. It is not like any form of civil disobedience, but rather it is criminal behaviour more like looting." Well said, Paul... more

CircleID’s Top Ten Posts of 2012

Here are the top ten most popular news, blogs, and industry updates featured on CircleID during 2012 based on the overall readership of the posts for the past 12 months. Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2013. more

NANOG 61 - Impressions of Some Presentations

The recent NANOG 61 meeting was a pretty typical NANOG meeting, with a plenary stream, some interest group sessions, and an ARIN Public Policy session. The meeting attracted some 898 registered attendees, which was the biggest NANOG to date. No doubt the 70 registrations from Microsoft helped in this number, as the location for NANOG 61 was in Bellevue, Washington State, but even so the interest in NANOG continues to grow... more

Visit of US House Speaker Pelosi to Taiwan Has Little Impact on Network Infrastructures

I'm writing this from Taipei, where I have lived in peace for over 10 years. Sadly I learned that during this week, intermediate-range ballistic missiles (operated by China) have flown far above the capital of Taiwan and that five of them have landed in the waters of Japan's exclusive economic zone (EEZ). This provocative live-firing drill came as a direct response from China following Pelosi's visit. more

Lessons Learned from the Namejuice/DROA/DROC Outage

Last week an ICANN registrar, Namejuice, went off the air for the better part of the day -- disappearing off the internet at approximately 8:30 am, taking all domains delegated to its nameservers with it, and did not come back online until close to 11 pm ET. That was a full business day and more of complete outage for all businesses, domains, websites, and email who were using the Namejuice nameservers -- something many of them were doing. more

1 Terabit DDoS Attacks Become a Reality; Reflecting on Five Years of Reflections

Reflection amplification is a technique that allows cyber attackers to both magnify the amount of malicious traffic they can generate, and obfuscate the sources of that attack traffic. For the past five years, this combination has been irresistible to attackers, and for good reason. This simple capability, of turning small requests into larger, 'amplified' responses, changed the Distributed Denial of Service (DDoS) attack landscape dramatically. more

DDOS and the DNS

The Mirai DDOS attack happened just over a year ago, on the 21st October 2016. The attack was certainly a major landmark regarding the sorry history of "landmark" DDOS attacks on the Internet. It's up there with the Morris Worm of 1988, Slammer of 2002, Sapphine/Slammer of 2009 and of course Conficker in 2008. What made the Mirai attack so special? more

Industry Updates

Alleviating BlackEnergy-Enabled DDoS Attacks

Meet the Speakers of the Cyber Threat Mitigation Webinar (by IPXO)

QAnon and 8Chan Digital Footprint Analysis and Investigation Expansion

How to Maintain Your Website’s Network Reachability with DNS Lookup Solutions

Under the Radar DDoS Attacks Increase by 158 Percent in Q2, 2019 Compared to the Same Time Last Year

Neustar Research Shows Large Attacks Growing as Multi-Vector Exploits Increasingly Become the Norm

Neustar to Acquire Verisign’s Security Services Customer Contracts

Q2 2018 DDoS Trends Report: 52 Percent of Attacks Employed Multiple Attack Types

Q1 2018 DDoS Trends Report: 58 Percent of Attacks Employed Multiple Attack Types

Q4 2017 DDoS Trends Report: Financial Sector Experienced 40 Percent of Attacks

Attacks Decrease by 23 Percent in 1st Quarter While Peak Attack Sizes Increase: DDoS Trends Report

Verisign Releases Q4 2016 DDoS Trends Report: 167% Increase in Average Peak Attack from 2015 to 2016

Verisign Q3 2016 DDoS Trends Report: User Datagram Protocol (UDP) Flood Attacks Continue to Dominate

Don’t Gamble With Your DNS

Defending Against Layer 7 DDoS Attacks