Twitter’s t.co Domain Outage Caused by Human Error

Declan McCullagh reporting in CNET: "Twitter last year began to abbreviate all hyperlinks using its t.co domain name -- which had the side effect of introducing a central point of failure where none existed before. That failure happened last night [Sunday Oct 7] around 11:30 p.m. PT when t.co went offline, meaning millions of Twitter users received 'non-existent domain' errors when trying to follow links." more

Is There Really a Mobile Malware Pandemic?

Much of the discussion regarding mobile security revolves around the growing "pandemic" of mobile malware. It's not uncommon to see headlines reporting the discovery of large numbers of new malware samples. However, as Google recently pointed out, with quite a bit of data to support them, there's little discussion of real world impact of these discoveries. This raises a number of relevant questions. Is the average user likely to be infected? Where does this malware come from? These are questions that deserve analysis and thoughtful responses. more

Limiting Large Network Outages

As telecom networks grow more interconnected, local outages can now trigger regional or national disruptions. A recent article by Ookla outlines five critical steps operators must follow to prevent small faults from cascading into systemic failures. more

The Secure 5G and Beyond Act – U.S. Credibility and Legal Requirements at Stake

The Secure 5G and Beyond Act of 2020 has been submitted by the U.S. Congress to the White House for signing into law. It has been sitting there for several days now, but there are obviously more important developments demanding attention than a law compelling the Executive Branch to develop a 5G security strategy within 180 days through public and Federal agency consultations that will be implemented by the NTIA. more

Building a More Secure Routing System: Verisign’s Path to RPKI

At Verisign, we believe that continuous improvements to the safety and security of the global routing system are critical for the reliability of the internet. As such, we've recently embarked on a path to implement Resource Public Key Infrastructure (RPKI) within our technology ecosystem as a step toward building a more secure routing system. In this blog, we share our ongoing journey toward RPKI adoption and the lessons we've learned as an operator of critical internet infrastructure. more

US Presidential Candidate John Delaney Wants to Create Department of Cybersecurity

On Tuesday, 2020 U.S. presidential candidate John Delaney announced a plan to create a Department of Cybersecurity. more

Internet Governance in 2023

It's been an interesting couple of weeks for me, in mid-October 2023. I presented in a couple of panels at the 18th Internet Governance Forum meeting, held in Kyoto, Japan, and I also listened in to a couple of sessions in their packed agenda. The following week, I followed the presentations at NANOG 89, the meeting of the North American Network Operator's Group, and listened to a presentation by John Curran, the President and CEO of ARIN, where he gave his impressions of the current state of Internet Governance. more

5G a Fizzle With Consumers

The cellular companies have made an unprecedented push to get customers interested in 5G. Back in November, I recorded a college football game that enabled me to go back and count the twelve 5G commercials during the game. Advertising during sports events is relatively expensive, so these ads were not purchased at bargain-basement prices. The amount of money being spent on advertising 5G must be gigantic. more

Multi-Layer Security Architecture - Importance of DNS Firewalls

In today's world with botnets, viruses and other nefarious applications that use DNS to further their harmful activities, outbound DNS security has been largely overlooked. As a part of multi-layer security architecture, a DNS Firewall should not be ignored. After serving as a consultant for multiple organizations, I have encountered many companies that allow all internal devices to send outbound DNS queries to external DNS servers - a practice that can lead to myriad problems. more

Cisco Introduces Intent-Based Network That Can Learn, Adapt and Mitigate Threats

Cisco has launched an intent-based networking solution designed to be intuitive and adapt; a new approach claimed to be one of the most significant breakthroughs in enterprise networking. more

A History of Disruptors: Or How the U.S. Government Saved the Internet from the Telcos

Kenji Kushida is a scholar at Stanford University, who has written a most explanatory overview of how America came to dominate cyberspace, through computer companies. He traces the evolution of the Internet to a series of actions taken by the US government to limit the power of the telephone companies. Kushida looks at the USA, Europe and Japan from the perspective of what happened when telephone monopolies were broken up and competition introduced in the 1990s. more

Low-Orbit Satellite Security

I've been watching the progress of the low-orbit satellite providers, which are promising to bring broadband solutions across the planet. There has been some serious movement since the last time I discussed their status. On January 29, Starlink launched its latest round of low-orbit satellites, bringing the number in space to 242. Not all of these will be delivering broadband. The first half dozen satellites were test units to try out various concepts. more

Implications of Satellite Being Broadband

We've had a quiet policy change in the United States over the last year, where satellite broadband is starting to be considered broadband by the federal government. Any rural household that subscribes to and loves Starlink would wonder why this is news, but from a policy perspective, it is a big deal. I've been considering what this shift might mean in the future. The FCC decided that Starlink wasn't broadband when it rejected Starlink's long-form filing in August 2022, where Starlink wanted to claim the funding it had won in the RDOF reverse auction.  more

Spectrum and Weather Forecasting

There is currently a brewing controversy over the allocation of various radio frequencies for 5G that could have a negative impact on weather forecasting. Weather forecasting has become extremely sophisticated and relies on masses of data gathered from weather satellites and other data-gathering devices. The masses of data, along with modern supercomputers and data center computing, have significantly improved the ability to predict future weather. more

50 Years of Ethernet

The idea for Ethernet was born fifty years ago in May 1973 when Robert Metcalf coined the word Ethernet. He had been studying ALOHAnet, developed at the University of Hawaii in 1971 and was the first public demonstration of a wireless packet data network. Metcalf used the work Ethernet as a reference to luminiferous aether, a concept postulated in the 17^th century to explain how light could be transmitted through a vacuum. more