Cybersecurity

The Pros and Cons of Introducing New gTLDs

Every time new concepts are introduced, much debate ensues as to the advantages and disadvantages such a change would bring forth. We've seen that happen with the launch of IPv6. Detractors and supporters rallied to make their respective arguments heard. One thing is sure though. The need for a much larger IP address space is something both parties are in agreement with. 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

MANRS Observatory: Monitoring the State of Internet Routing Security

Routing security is vital to the future and stability of the Internet, but it's under constant threat. Mutually Agreed Norms for Routing Security (MANRS) is a global initiative, driven by the networking community and supported by the Internet Society, aiming to reduce the most common threats to the Internet's routing system through technical and collaborative action. more

There is Always a Back Door

A long time ago, I worked in a secure facility. I won't disclose the facility; I'm certain it no longer exists, and the people who designed the system I'm about to describe are probably long retired. Soon after being transferred into this organization, someone noted I needed to be trained on how to change the cipher door locks. We gathered up a ladder, placed the ladder just outside the door to the secure facility, popped open one of the tiles on the drop ceiling, and opened a small metal box with a standard, low-security key. more

What’s in Your DNS Query?

Privacy problems are an area of wide concern for individual users of the Internet -- but what about network operators? Geoff Huston wrote an article earlier this year concerning privacy in DNS and the various attempts to make DNS private on the part of the IETF -- the result can be summarized with this long, but entertaining, quote. more

Facebook, Privacy, and Cryptography

There has long been pressure from governments to provide back doors in encryption systems. Of course, if the endpoints are insecure it doesn't matter much if the transmission is encrypted; indeed, a few years ago, I and some colleagues even suggested lawful hacking as an alternative. Crucially, we said that this should be done by taking advantage of existing security holes rather than be creating new ones. more

Recalibrating the DoH Debate

At the Internet Engineering Task Force (IETF) it is time we accept the wide range of drivers behind (and implications of) standards and for stakeholders to start listening to each other. A protocol recently released by the IETF, DNS over HTTPS (DoH), is at the centre of an increasingly polarised debate. This is because DoH uses encryption in the name of security and privacy and re-locates DNS resolution to the application layer of the Internet. more

GDPR Fine Enough or More Disclosure?

The UK cares about its citizens' privacy to the tune of a $229 million (US) fine of British Airways for a breach that disclosed information of approximately half a million customers. It's exciting -- a significant fine for a significant loss of data. I think GDPR will lead to improved security of information systems as companies scramble to avoid onerous fines and start to demand more from those who provide information security services and products. more

WHOIS Database Download: Proactive Defense Against the Rising Tide of BEC Fraud

How many times have you heard that humans are the weakest link in cybersecurity? The headlines have proven that over and over again. In particular, business email compromise or BEC (also known as email account compromise or EAC) scams, which typically target an employee with access to the financial resources of his company -- this could be a C-level executive or any high-ranking officer -- for fraud are still on a constant uphill trend. more

Network Protocols and Their Use

In June, I participated in a workshop, organized by the Internet Architecture Board, on the topic of protocol design and effect, looking at the differences between initial design expectations and deployment realities. These are my impressions of the discussions that took place at this workshop. ... In this first part of my report, I'll report on the case studies of two protocol efforts and their expectations and deployment experience. more