Network operators rely on guidance from IP address experts because not all IP addresses used on the Internet are the same. The "reputation" of email senders is especially important because some are malicious users of the system. But identifying "senders" based on their email addresses or the individual IP address of a user presents issues that are unnecessarily complex. more
Like measuring COVID's impact, so too measuring the impact of COVID-related abuse on the Internet is difficult, there are those that would foolishly dismiss the danger entirely, others over-state the problem, perhaps to prompt sales of tools and services. The amount and type of abuse varies from network to network, and to declare everything is fine based on one world-view you believe to be ubiquitous, or that the sky is falling based upon another, extrapolated to 'everybody else' is simply poor analysis. more
A group of leading domain name registries and registrars have joined forces in the fight against abuse in the Domain Name System (DNS), by developing a "Framework to Address Abuse." Each contributing company has shared its expertise and experience mitigating abusive practices with the goal of submitting the resulting Framework as a foundational document for further discussion in the multistakeholder community. more
Many companies have the occasional "oops" where they send email they probably shouldn't have. This can often cause a decrease in reputation and subsequent delivery problems. Some companies rush to fix things by changing domains. Brand new domains, those registered less than 30 days, have really bad reputations. Blame the spammers and scammers who exploited a loophole and sent tons of untraceable spam from newly registered domains that they then abandoned without paying for them. more
A few days ago I was startled to get an anti-spam challenge from an Earthlink user, to whom I had not written. Challenges are a WKBA (well known bad idea) which I thought had been stamped out, but apparently not. The plan of challenges seems simple enough; they demand that the sender does something to prove he's human that a spammer is unlikely to do. more
The essence of information privacy is control over disclosure. Whoever is responsible for the information is supposed to be able to decide who sees it. If a society values privacy, it needs to ensure that there are reasonable protections possible against disclosure to those not authorized by the information's owner. In the online world, an essential technical component for this assurance is encryption. If the encryption that is deployed permits disclosure to those who were not authorized by the information's owner, there should be serious concern about the degree of privacy that is meaningfully possible. more
Not so long ago, the notion of introducing laws and other regulatory responses to address cyber security issues was regarded with significant hesitation by governments and policy makers. To some extent, this hesitation may well have stemmed from a general perception by those who do not work directly in the field that the world of cyber security is somewhat of a 'dark art'. More recently, however, there has been a substantial shift in this attitude, with proposals to regulate a range of cyber security related matters becoming increasingly numerous. more
Jointly published by the Internet Infrastructure Coalition (i2C) and the Messaging, Malware and Mobile Anti-Abuse Working Group, the new document outlines proven activities that can help Web hosting services improve their operations and better protect end-users. more
The EFF has just posted a shallower than usual deeplink alleging an "email encryption downgrade attack" by ISPs intent on eavesdropping on their customers. They, along with VPN provider Golden Frog, have additionally complained to the FCC reporting this. Here, they've just noticed something that's common across several hotel / airport wifi networks... more
One of the hottest topics in the email biz these days (insofar as any topic is hot) is how we will deal with mail on IPv6 networks. On existing IPv4 networks, one of the most effective anti-spam techniques is DNSBLs, blackists (or blocklists) that list IP addresses that send only or mostly spam, or whose owners have stated that they shouldn't be sending mail at all. DNSBLs are among the cheapest of anti-spam techniques since they can be applied to incoming mail connections without having to receive or filter spam. more
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
Back in the dark ages of email delivery the only thing that really mattered to get your email into the inbox was having a good IP reputation. If your IP sent good mail most of the time, then that mail got into the inbox and all was well with the world. All that mattered was that good IP reputation. Even better for the people who wanted to game the system and get their spam into the inbox, there were many ways to get around IP reputation. more
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
If you haven't been reading the news of late, venerable anti-spam service Spamhaus has been the target of a sustained, record-setting Distributed Denial-of-Service (DDoS) attack over the past couple of weeks... Of course, bad guys are always mad at Spamhaus, and so they had a pretty robust set-up to begin with, but whoever was behind this attack was able to muster some huge resources, heretofore never seen in intensity, and it had some impact, on the Spamhaus website, and to a limited degree, on the behind-the-scenes services that Spamhaus uses to distribute their data to their customers. more
Today I released a report on 'National cyber crime and online threats reporting centres. A study into national and international cooperation'. Mitigating online threats and the subsequent enforcing of violations of laws often involves many different organisations and countries. Many countries are presently engaged in erecting national centres aimed at reporting cyber crime, spam or botnet mitigation. more
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