After Two Security Assessments I Must Be Secure, Right? Imagine you are the CIO of a national financial institution and you've recently deployed a state of the art online transaction service for your customers. To make sure your company's network perimeter is secure, you executed two external security assessments and penetration tests. When the final report came in, your company was given a clean bill of health. At first, you felt relieved, and confident in your security measures. Shortly thereafter, your relief turned to concern. ...Given you're skepticism, you decide to get one more opinion. ...And the results were less than pleasing. more
My OECD paper on spam problems in developing economies is now linked from the OECD Anti-Spam Toolkit page, as part of section 8 of the Anti-Spam Toolkit (Outreach). This ZDNet article provides a reasonably good summary of my paper as well. I welcome comments and suggestions from CircleID readers. "Spam is a much more serious issue in developing countries as it is a heavy drain on resources that are scarcer and costlier in developing countries than elsewhere..." more
The following is an overview of the recent Honeynet Project and Research Alliance study called 'Know your Enemy:Phishing' aimed at discovering practical information on the practice of phishing. This study focuses on real world incidents based on data captured and analyzed from the UK and German Honeynet Project revealing how attackers build and use their infrastructure for Phishing based attacks. "This data has helped us to understand how phishers typically behave and some of the methods they employ to lure and trick their victims. We have learned that phishing attacks can occur very rapidly, with only limited elapsed time between the initial system intrusion and a phishing web site going online..." more
Industry Canada, the part of the Canadian government roughly equivalent to the U.S. Commerce Department, has had a task force on spam working for the past year or so. I was invited to participate as an unofficial member, since I'm not a Canadian. Yesterday, it wrapped up its work and published its report (aussi disponsible en francais) to the government. It's quite good, and has a set of 22 recommendations. more
Our systems are protected by state of the art security systems. Our SPAM filter is a hardware device that is nearly 100% effective. It also helps in protecting against Spyware and other malicious code. Our Firewall is similar to those you would find in large corporations. Our Anti-Virus system has served us well and we've not had problems with virus for years. ...Two weeks ago, I received approximately twenty e-mails requesting the review and approval of Defending The Net articles published on other sites. I thoroughly review the e-mails to make sure they seem legitimate... more
The ITU-T has proposed a new system of country-based IP address allocations which aims to satisfy a natural demand for self-determination by countries; however, the proposal also stands to realign the Internet's frontiers onto national boundaries, with consequences which are explored here. ...we do indeed see the Internet as a single entity, and we even speak of the Internet's architecture as if there was one designer who laid out a plan and supervised its construction. But despite all appearances, the Internet landscape is indeed made up of many separate networks... This article will explore these issues, particularly in light of recent proposals to introduce new mechanisms for IP address management, a prospect which could, over time, substantially alter both the geography of the Internet, and its essential characteristics as a single cohesive network. more
For those who've been living in an e-mail free cave for the past year, phishing has become a huge problem for banks. Every day I get dozens of urgent messages from a wide variety of banks telling me that I'd better confirm my account info pronto. ...Several people have been floating proposals to extend authentication schemes to the URLs in a mail message. A sender might declare that all of links in it are to its own domain, e.g., if the sender is bigbank.com, all of the links have to be to bigbank.com or maybe www.bigbank.com. Current path authentication schemes don't handle this, but it wouldn't be too hard to retrofit into SPF. ...So the question is, is it worth the effort to make all of the senders and URLs match up? more
A recent study conducted by Blue Security reports how Internet users can unknowingly expose their contacts' emails addresses to Spammers while sharing files, music, games and DVDs over Peer-to-Peer (P2P) networks. The study has uncovered hundreds of incidents where files containing email addresses were made accessible in P2P networks. more
Larry Seltzer wrote an interesting article for eWeek, on port 25 blocking, the reasons why it was being advocated, and how it would stop spam. This quoted an excellent paper by Joe St.Sauver, that raised several technically valid and true corollaries that have to be kept in mind when blocking port 25 -- "cough syrup for lung cancer" would be a key phrase... Now, George Ou has just posted an article on ZDNET that disagrees with Larry's article, makes several points that are commonly cited when criticizing port 25 blocking, but then puts forward the astonishing, and completely wrong, suggestion, that worldwide SPF records are going to be a cure all for this problem. Here is my reply to him... more
The Internet is often a lawless place. Everyone knows that there are many tricks and traps lurking on the Internet, just waiting to prey on unsuspecting and innocent users. Some of these traps will trash your computer while others will turn your PC into a zombie that will broadcast messages at the virus writer's command. ...The list of annoyances and downright criminal activities seem endless. ...To make the Internet a safer place both legislators and law enforcement are now focusing on the Internet. In the crossfire that's taking place there are many ideas that are being offered up. Some of them are good and some are not. One bad decision that was recently forced upon the Internet community (without hearings -- more on this later) was to eliminate private domain name registrations for .US domain names. ...It's important to understand the difference between privacy and anonymity. more
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