Cybersecurity

Searching Under Lampposts with DKIM

Email is a complex service and email abuse adds confusing deceptions. Worse, like postal mail and even telephone service, Internet mail is inherently open, flexible and even anonymous, making things much easier for abusers. Bad actors hide their true identity and their true purpose. Most other communication tools for users also are also quite open, and problems with email are being replicated elsewhere, such as instant messaging and social media. more

Using Domain Filtering To Effect IP Address Filtering

In Taking Back The DNS I described new technology in ISC BIND as of Version 9.8.0 that allows a recursive server operator to import DNS filtering rules in what ISC hopes will become the standard interchange format for DNS policy information. Later I had to decry the possible use of this technology for mandated content blocking such as might soon be the law of the land in my country. I'm a guest at MAAWG this week in San Francisco and one of the most useful hallway discussions I've been in so far was about the Spamhaus DROP list. more

Who Broke the WHOIS?

As Internet services go, WHOIS held a lot of promise but has repeatedly failed to live up to its potential; raising the question "is it time to retire WHOIS?" The concept behind WHOIS was simple. For each and every registered domain name, provide the facility for querying details about who owns it, who administers it, when was it created and when it will expire. Unfortunately the service lost its way practically from day one after failing to agree upon or adhere to any formal structure of the content it provides. more

Experts Urge Congress to Reject DNS Filtering from PROTECT IP Act, Serious Technical Concerns Raised

A group of leading DNS experts have released a paper detailing serious concerns over the proposed DNS filtering requirements included as part of the bill recently introduced in the U.S. Senate named Preventing Real Online Threats to Economic Creativity and Theft of Intellectual Property Act of 2011 ("PROTECT IP Act"). The group who is urging lawmakers to reconsider enacting such a mandate into law, includes leading DNS designers, operators, and researchers, responsible for numerous RFCs for DNS, publication of many peer-reviewed academic studies related to architecture and security of the DNS, and responsible for the operation of important DNS infrastructure on the Internet. more

University of California Identifies the Next Hard Target in a Never Ending War

This is, of course, about the recent NYT article that showcases the results of Prof Stefan Savage and his colleagues from UCSD/Berkeley. As my good friend and longtime volunteer at CAUCE, Ed Falk, points out, this is a great find, but hardly a FUSSP. The nice thing about the fight against bots and spammers is these little victories people on "our" side keep having in an endless series of skirmishes and battles... more

The ENISA Botnet Report: Thoughts on the State of Play in Smart Phones

At the ENISA presentation on her botnet report at eco in Cologne, 9 and 10 March, one of the slots was dedicated to threats to the mobile environment. The message I was supposed to come home with was: we can still count the numbers of mobile viruses manually, <600; the problem will never be the same as on a fixed network as traffic is monitored and metered: We detect it straight away. We are studying the problem seriously. Are mobile operators really prepared for what is coming? more

Password Policies Need to Be the Same if We Want Users to Take Our Advice

The other day on Facebook, one of my friends mentioned that today (i.e., that day) was a good day to update his passwords. But he then lamented that some web sites don't allow you to create more than a 12-character password! He was incensed! Well, maybe not incensed but showed contempt for the fact these sites restricted password length. more

Defending Against the Hackers of 1995

Two factor authentication that uses an uncopyable physical device (such as a cellphone or a security token) as a second factor mitigates most of these threats very effectively. Weaker two factor authentication using digital certificates is a little easier to misuse (as the user can share the certificate with others, or have it copied without them noticing) but still a lot better than a password. Security problems solved, then? more

What Next for Email Service Providers?

It's been a very bad month for ESPs, companies that handle bulk mailings for their clients. Several of them have had internal security breaches, leaking client information, client mailing lists, or both. Many have also seen clients compromised, with the compromised credentials used to send spam. The sequence of events suggests all the ESPs whose clients were compromised were themselves compromised first. (That's how the crooks knew who to attack.) more

A Closer Look at Apple and Location-Tracking

There's been a lot of media attention to a report that iPhones track your movements. It's even reached the U.S. Senate. I'm underwhelmed. I think that the threat is overhyped. What is happening is that these devices create a hidden file with your location... more

Real. Or. Phish?

After Epsilon lost a bunch of customer lists, I've been keeping an eye open to see if any of the vendors I work with had any of my email addresses stolen -- not least because it'll be interesting to see where this data ends up. Recently I got mail from Marriott, telling me that "unauthorized third party gained access to a number of Epsilon's accounts including Marriott's email list."... more

ESP Compromises and Their Lack of Security

Over at Word to the Wise, Laura Atkins has a post up where she talks about the real problem with ESPs and their lack of internal security procedures which resulted in the breach of many thousands of email addresses (especially Epsilon). However, Atkins isn't only criticizing ESP's lack of security but also the industry's response wherein they have suggested countermeasures that are irrelevant to the problem.  more

Why the Fukushima Analogy Was Apt

A few days ago, CAUCE published a blog post entitled "Epsilon Interactive breach the Fukushima of the Email Industry" on our site, and the always-excellent CircleID. A small coterie of commenters was upset by the hyperbolic nature of the headline. Fair enough, an analogy usually has a high degree of probability that it will fail, and clearly, no one has died as a result of the release of what appears to be tens of millions of people's names and email addresses. But, the two situations are analogous in many other ways, and here's why. more

Garth Bruen Discussing Whois, DNSSEC and Domain Security

NameSmash has interviewed Garth Bruen, Internet security expert and creator of Knujon, on some key issues under discussion during the recent ICANN meetings in San Francisco. Topics include Whois, DNS Security Extensions (DNSSEC) and generic Top-Level Domains (gTLDs) -- issues of critical importance particularly with ICANN's expected roll-out of thousands of new gTLDs in the coming years. more

Epsilon Interactive Breach the Fukushima of the Email Industry

A series of attacks on the Email Service Provider (ESP) community began in late 2009. The criminals spear-phish their way into these companies that provide out-sourced mailing infrastructure to their clients, who are companies of all types and sizes. ... On March 30, the Epsilon Interactive division of Alliance Data Marketing (ADS on NASDAQ) suffered a massive breach that upped the ante, substantially. Email lists of at least eight financial institutions were stolen. more