Blog Posts
Blacklist Ecosystem Analysis
Hi all. Leigh Metcalf and I have been continuing our study of the cybersecurity ecosystem. Last year we published a long white paper....
• By Jonathan Spring, Leigh Metcalf
In CERT/CC Vulnerabilities
Domain Name Parking
Hello, this is Jonathan Spring with my colleague Leigh Metcalf. Today, we're releasing a CERT/CC whitepaper on our investigations into domain name parking....
• By Jonathan Spring, Leigh Metcalf
In CERT/CC Vulnerabilities
A Subversive Use of SiLK
Hi, this is Leigh Metcalf. In this blog post I talk about a subversive use of SiLK, the open-source tool suite designed by the CERT/CC team at the SEI, available …
• By Leigh Metcalf
In CERT/CC Vulnerabilities
Probable Cache Poisoning of Mail Handling Domains
Hi, this is Jonathan Spring with my colleague Leigh Metcalf. For some time now, we've been working through a problem we found, but it's time to discuss it more broadly....
• By Jonathan Spring, Leigh Metcalf
In CERT/CC Vulnerabilities
A ccTLD Case Study: .tv
Hello, this is Leigh Metcalf and Jonathan Spring. In this post, we first examine some of the usage patterns in the .tv top-level DNS zone via passive DNS....
• By Leigh Metcalf, Jonathan Spring
In CERT/CC Vulnerabilities
Finding Patterns of Malicious Use in Bulk Registrations
Hi, this is Leigh Metcalf with my colleague Jonathan Spring. In 2011, .co.cc [1] and .co.tv [2] were removed from Google's search results because of the high incidence of malicious …
• By Leigh Metcalf, Jonathan Spring
In CERT/CC Vulnerabilities
Second Level Domain Usage in 2012 for Common Top Level Domains
Hi, this is Leigh Metcalf with my colleague Jonathan Spring. Here is a look at second level domain (SLD) usage in 2012 for the most common generic Top Level Domains …
• By Leigh Metcalf, Jonathan Spring
In CERT/CC Vulnerabilities
The Growth of IPv6 Announcements
Hi, this is Leigh Metcalf again with my colleague Rhiannon Weaver. IPv6, the replacement for IPv4, has been heavily marketed. To consider exactly how popular IPv6 is on the internet, …
• By Leigh Metcalf
In CERT/CC Vulnerabilities
An Alternate View of Announced IPv4 Space
In my previous post, I examined the total amount of IPv4 space announced and presented cumulative graphics....
• By Leigh Metcalf
In CERT/CC Vulnerabilities
The Growth Rate of IP Addresses That Are Advertised as Usable on the Internet
Hi, this is Leigh Metcalf of the Network Situational Awareness Team. Recently, I have been considering the amount of IPv4 space that is announced on the Internet....
• By Leigh Metcalf
In CERT/CC Vulnerabilities
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