Threat Intelligence

Why Domain Name Security Matters Most?

In my recent CircleID post, DNS, Domain Names, and Certificates: The Missing Links in Most Cybersecurity Risk Postures, I highlighted the importance of applying multiple layers of defense to secure these business-critical assets. Last Friday, Brian Krebs, the world-renowned cybersecurity journalist, reiterated the criticality of domain name security because the domain name "e-hawk.net" was stolen from the rightful owner using social engineering tactics targeting its domain name registrar. more

What Your ISP (Probably) Knows About You

Earlier this week, I came across a working paper from Professor Peter Swire - a highly respected attorney, professor, and policy expert. Swire's paper, entitled "Online Privacy and ISPs", argues that ISPs have limited capability to monitor users' online activity. The paper argues that ISPs have limited visibility into users' online activity for three reasons: (1) users are increasingly using many devices and connections, so any single ISP is the conduit of only a fraction of a typical user's activity; (2) end-to-end encryption is becoming more pervasive, which limits ISPs' ability to glean information about user activity; and (3) users are increasingly shifting to VPNs to send traffic. more

Protecting an Enterprise from Cyber Catastrophe

We are suffering an epidemic of cyberattacks while in a viral pandemic. This post is for those who have responsibility for assuring that the IT-based services offered by their enterprise can quickly recover in the case of successful cyber-attack or other disaster. University of Vermont Medical Center (UVMMC) is an excellent hospital. I owe my life to treatment there and am grateful for both the skill and the kindness of UVMMC staff. They have been devastated by a cyber-attack. more

The Sportsmanship of Cyber-warfare

As a bit of a history buff I can't avoid a slight tingling of déjà vu every time I read some new story commenting upon the ethics, morality and legality of cyber-warfare/cyber-espionage/cyberwar/cyber-attack/cyber-whatever. All this rhetoric about Stuxnet, Flame, and other nation-state cyber-attack tools, combined with the parade of newly acknowledged cyber-warfare capabilities and units within the armed services of countries around the globe, brings to the fore so many parallels... Call me a cynic if you will, but when the parallels in history are so evident, we'd be crazy to ignore them. more

What Mobile Malware Looks Like

Last month at the Virus Bulletin Conference in Barcelona, I took in one of the sessions on mobile malware. This type of malware is foreign to me because I mostly stay in the email space at work (and even then, I am focusing more on day-to-day issues of running a large mail provider than I am on spam and abuse). What's mobile malware like? What are the threats? How do users get infected? more

Anonymous, LulzSec, and the Option of Internet Security

As hacking groups such as Anonymous and LulzSec continue to make headlines, many of us in the Information Security field can only sit back and shake our heads. The large number of successful system breaches, web site defacements, and the publication of confidential data is not at all surprising, and for the most part was only a matter of time. more

A Dangerous Buzz, and Opt-In Isn’t Just for Email

Google is great at generating buzz, and they've done it again with their new social vitality tool, appropriately named Google Buzz. Buzz takes all of your Gmail contacts (and presumably other connections from elsewhere within the Googleplex), and makes them all your "friends" by default; it then shares your activity from Google Reader, YouTube, and other tools with all of them, and vice versa... more

Taking a Closer Look at the Recent DDoS Attacks and What it Means for the DNS

The recent attacks on the DNS infrastructure operated by Dyn in October 2016 have generated a lot of comment in recent days. Indeed, it's not often that the DNS itself has been prominent in the mainstream of news commentary, and in some ways, this DNS DDOS prominence is for all the wrong reasons! I'd like to speculate a bit on what this attack means for the DNS and what we could do to mitigate the recurrence of such attacks. more

Domain Name Resale Market a Haven for Phishers?

In a recent article at TechWeb, the following observations were made: "Internet addresses that appeal to identity thieves eager to rip off consumers are being posted by major domain resellers... Finnish-based F-Secure has identified more than 30 registered domain names for resale that would be of interest only to the legitimate holder of the trademark or to phishers..." more

Deploying DNSSEC: Lessons from Domain Registrar Implementation

As a registrar at the front end of the DNSSEC deployment effort, our technical team has made a sustained investment in DNSSEC deployment so that our customers don't get overwhelmed by this wave of changes to the core infrastructure of the Domain Name System. Along the way, we've learnt a lot about how to implement DNSSEC which might hold useful lessons for other organizations that plan to deploy DNSSEC in their networks. more

The Promise of Multi-Signer DNSSEC

DNSSEC is increasingly adopted by organizations to protect DNS data and prevent DNS attacks like DNS spoofing and DNS cache poisoning. At the same time, more DNS deployments are using proprietary DNS features like geo-routing or load balancing, which require special configuration to support using DNSSEC. When these requirements intersect with multiple DNS providers, the system breaks down. more

Schneier and Kerr on Encryption Workarounds

Bruce Schneier is a famous cryptography expert and Orin Kerr a famous cyberlaw professor. Together they've published a law journal article on Encryption Workarounds. It's intended for lawyers so it's quite accessible to non-technical readers. The article starts with a summary of how encryption works, and then goes through six workarounds to get the text of an encrypted message. more

Debilitating Cyber Attack: Not If, But When?

We all know how easy it can be to ignore or underestimate the possibly, or even likelihood, of a terrorist attack; just remember what happened on 9-11. That seems to be just what the U.S. is doing when it comes to a possible Cyber-Attack, no not in other countries, but right here at home where targets like private sector companies, who provide vital economic and emergency services to our population using broadband infrastructure, and are woefully under-secured for such attacks. more

Extreme Vulnerability at the Edge of the Internet - A Fresh New Universal Human-Rights Problem

By design, the Internet core is stupid, and the edge is smart. This design decision has enabled the Internet's wildcat growth, since without complexity the core can grow at the speed of demand. On the downside, the decision to put all smartness at the edge means we're at the mercy of scale when it comes to the quality of the Internet's aggregate traffic load. Not all device and software builders have the skills - and the quality assurance budgets - that something the size of the Internet deserves. more

Spamhaus Tells Us That Botnets Are Getting Worse

The Spamhaus Project just published a long article about the botnets they've been watching during 2014. As this chart shows, we're not making any progress. They also note that the goals of botnets have changed. While in the past they were mostly used to send spam, now they're stealing banking and financial information, engaging in click fraud, and used for DDoS and other malicious mischief. more