Cybersecurity

US-NL Cybercrime Treaty Signed

On Wednesday 22 February the United States and The Netherlands signed a "declaration of intent" on the cooperation on fighting cybercrime. This event was reported by the press as a treaty. At least that is what all Dutch postings I read wrote, with exception of the official website of the Dutch government. So what was actually signed? Reading the news reports some thoughts struck me. more

ICANN: The Stakes in Registrar Accreditation

Law enforcement demands to domain name registrars were a recurring theme of the 42d ICANN public meeting, concluded last week in Dakar. The Governmental Advisory Committee (GAC) took every opportunity at its public meetings with GNSO and Board, and in its Communique to express dismay, disappointment, and demands for urgent action to "reduce the risk of criminal abuse of the domain name system." more

Microsoft Disrupts the Zeus Infrastructure

Over the weekend and this morning, Microsoft, working in conjunction with others, issued civil lawsuits to sinkhole numerous domains associated with the Zeus botnet. When I say "botnet", I use the term loosely because Zeus is not a botnet in the sense that Rustock or Waledac is (or was). Rather, Zeus is a tool kit that online criminals can buy that lets them create phishing pages, perform fast fluxing, host drive-by downloads in addition to spamming. It's more like infrastructure than a botnet, although it does have a large botnet under its control. more

Cryptographic Tools for Non-Existence in the Domain Name System: NSEC and NSEC3

In my previous post, I described the first broad scale deployment of cryptography in the DNS, known as the Domain Name System Security Extensions (DNSSEC). I described how a name server can enable a requester to validate the correctness of a "positive" response to a query -- when a queried domain name exists -- by adding a digital signature to the DNS response returned. more

Are Botnets Really the Spam Problem?

Over the last few years I've been hearing some people claim that botnets are the real spam problem and that if you can find a sender then they're not a problem. Much of this is said in the context of hating on Canada for passing a law that requires senders actually get permission before sending email. Botnets are a problem online. They're a problem in a lot of ways. They can be used for denial of service attacks. They can be used to mine bitcoins... more

How to Stop the Spread of Malware? A Call for Action

On Webwereld an article was published following a new Kaspersky malware report Q1-2013. Nothing new was mentioned here. The Netherlands remains the number 3 as far as sending malware from Dutch servers is concerned. At the same time Kaspersky writes that The Netherlands is one of the most safe countries as far as infections go. So what is going on here? more

SPIT is in Everyone’s Mouth, Though Not Yet in Everyone’s Ears

Spam over Internet Telephony (SPIT) is viewed by many as a daunting threat. SPIT is much more fatal than email spam, for the annoyance and disturbance factor is much higher. Various academic groups and the industry have made some efforts to find ways to mitigate SPIT. Most ideas in that field are leaning on classical IT security concepts such as intrusion detection systems, black-/white-/greylists, Turing tests/computational puzzles, reputation systems, gatekeeper solutions, etc... We identified the lack of a benchmark testbed for SPIT as a serious gap in the current research on the matter, and this motivated us at the to start working on a first tool for that. more

Name Collision Mitigation Requires Qualitative Analysis (Part 3 of 4)

As discussed in the several studies on name collisions published to date, determining which queries are at risk, and thus how to mitigate the risk, requires qualitative analysis. Blocking a second level domain (SLD) simply on the basis that it was queried for in a past sample set runs a significant risk of false positives. SLDs that could have been delegated safely may be excluded on quantitative evidence alone, limiting the value of the new gTLD until the status of the SLD can be proven otherwise. more

Compromised Accounts - Are Hotmail, Yahoo and Gmail Seeing an Increase in Spam Sent Out?

Last week, I commented on the the Gmail/Hotmail/Yahoo username and password leak. The question we now ask is whether or not we are seeing an increased amount of spam from those services. On another blog, they were commenting that various experts were claiming that this is the case. more

Cost-Effectiveness: The Prerequisite for Cybersecurity Regulation

Cybersecurity regulation is coming. Whether regulations intended to enhance critical infrastructure protection will be based on existing statutory authority, new legislation, an Executive Order or a combination of legal authorities, however, is still unknown. Other aspects of the coming federal oversight of critical infrastructure cybersecurity that remain undetermined include the extent to which governance system will include voluntary characteristics and the time frame for initiation of new cybersecurity regulation. more

Recent Industry Changes: Internet Standards, ARIN WHOIS Changes, Hotmail Postmaster Pages

Signing Email is now a Draft Standard! Signing email transitioned from a proposed standard to a draft standard (RFC6376 -- one of the new RFCs) over at the IETF a few days ago. The other is RFC6377. Let's go through a brief history of DKIM RFCs to refresh our memories... more

Notes from NANOG 89: Trust and Network Infrastructure

Trust is such a difficult concept in any context, and certainly, computer networks are no exception. How can you be assured that your network infrastructure is running on authentic platforms, both hardware and software and its operation has not been compromised in any way? more

Neustar Analysis Shows ICANN Study Overstates Risk of Harmful Domain-Name Collision

As we blogged about recently, Neustar is committed to ensuring that the domain name system is secure and stable and has been operating top-level domains (TLDs) for over a decade. Tuesday, Neustar submitted comments to the Internet Corporation for Assigned Names and Numbers (ICANN) in response to ICANN's proposal to delay the launch of hundreds of new generic top-level domains (gTLDs). ICANN's decision to delay the launch is based on a study it commissioned that measured the potential frequency of domain-name collision. more

Phishing: A Look Into the E-Crime Landscape

At the recent Anti-Phishing Working Group meeting in San Francisco, Rod Rasmussen and I published our latest APWG Global Phishing Survey. Phishing is a distinct kind of e-crime, one that's possible to measure and analyze in depth. Our report is a look at how criminals act and react, and what the implications are for the domain name industry. more

The Real Face of Cyberwar?

Anyone who reads the papers sees stories -- or hype -- about cyberwarfare. Can it happen? Has it already happened, in Estonia or Georgia? There has even been a Rand Corporation study on cyberwarfare and cyberdeterrence. I wonder, though, if real cyberwarfare might be more subtle -- perhaps a "cyber cold war"? more