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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»
After looking at the state of DNSSEC in some detail a little over a year ago in 2006, I've been intending to come back to DNSSEC to see if anything has changed, for better or worse, in the intervening period... To recap, DNSSEC is an approach to adding some "security" into the DNS. The underlying motivation here is that the DNS represents a rather obvious gaping hole in the overall security picture of the Internet, although it is by no means the only rather significant vulnerability in the entire system. One of the more effective methods of a convert attack in this space is to attack at the level of the DNS by inserting fake responses in place of the actual DNS response. more»
On Saturday Aug 7th, DNS provider DNS Made Easy was the target of a very large denial of service attack. As far as can be determined the total traffic volume exceeded 40 Gigabit/second, enough to saturate 1 million dialup Internet lines. Several of DNS Made Easy's upstream providers had saturated backbone links themselves. There are indications that not only DNS Made Easy suffered from this attack, but the Internet as a whole. more»
As I blogged about several months ago, as did numerous other anti-spam bloggers, David Ritz was sued by Jeffrey Reynolds and a judge in North Dakota agreed with Reynolds. At the heart of the case was that Ritz engaged in anti-spam activities using techniques known only to a small subset of advanced computer users, and used these techniques maliciously against Reynolds... Back in the olden days of spam fighting, some anti-spammers used to use malicious techniques against spammers in order to shut them down... more»
Kidnap. Rape. There are no lesser words that can be used to describe what happened to the daughter of an anti-spam investigator in Russia. His daughter was recently released, according to Joseph Menn's recent article on Boing Boin, after having been kidnapped from her home five years ago, fed drugs, and made to service men, as a warning to ward off further investigations. The criminals behind these vicious acts were also responsible for large spamming organization associated with Russian Mob activity. more»
I was browsing CircleID the other day and came across Bruce Schneier's article on cyberwar. Schneier's article, and the crux of his point, is that the term cyber war and the threat of cyber warfare has been greatly exaggerated. The real problem in cyberspace is not the threat of cyber warfare wherein a foreign government, or possibly non-state actor, conducts a cyber attack on another nation. more»
In a discussion about a recent denial of service attack against Twitter, someone asked, "Some class of suppliers must be making money off of the weaknesses. Anybody out there have a prescription for the cure?" Sure, but you're not going to like it. The Internet was originally a walled garden, where its operators knew who all the users were and could eject anyone who misbehaved... more»
Online attackers have briefly disrupted service on at least two of the 13 "root" servers that are used to direct traffic on the Internet.
The attack, which began Tuesday at about 5:30 a.m. Eastern time, was the most significant attack against the root servers since an October 2002 distributed denial of service (DDOS) attack, said Ben Petro, senior vice president of services with Internet service provider Neustar Inc. more»
Mary Landesman of ScanSafe reports: "A new outbreak of SQL attacks began on the 8th. Not that they ever really go away, but new waves replace the old ones. The attackers are using a much larger number of domains than seen in previous months. Just 11 days into June, and already 54 of these domains have been observed. Many of these are previously suspended domains that registrars have released back to the attackers. more»
News broke this week about an attack in Puerto Rico that caused the local websites of Google, Microsoft, Yahoo, Coca-Cola, PayPal, Nike, Dell and Nokia to be redirected for a few hours to a phony website. The website was all black except for a taunting message from the computer hacker responsible for the attack... more»
DNS root servers function as part of the Internet backbone, as explained in Wikipedia, and have come under attack a number of times in the past -- although none of the attacks have ever been serious enough to severely hamper the performance of the Internet. In response to some of the common misconceptions about the physical location and total number of DNS root servers in the world, Patrik Faltstrom has put together a visual map on Google, pin-pointing the approximate location of each server around the world. more»
NeuStar's UltraDNS faced attack on two fronts on Tuesday, March 31. One of the attacks was technical -- a massive denial-of-service attack. The second was a rather surprising opening strike from competitor Dynamic Network Services (DynDNS), which launched a full-scale (and in T1R's opinion, misguided) public relations broadside. First, to the actual denial of service attack. Contrary to many early reports, UltraDNS was not 'down' on Tuesday... more»
The United States is under cyber-attack. An article in Time magazine titled "The Invasion of the Chinese Cyberspies" discusses a computer-network security official for Sandia National Laboratories who had been "tirelessly pursuing a group of suspected Chinese cyberspies all over the world." The article notes that the cyberespionage ring, known to US investigators as Titan Rain, has been "penetrating secure computer networks at the country's most sensitive military bases, defense contractors and aerospace companies." more»
Imagine my surprise upon reading a BBC article which identified ISC BIND as the top security vulnerability to UNIX systems. At ISC, we have striven for a decade to repair BIND's reputation, and by all accounts we have made great progress. "What could this be about," I wondered, as I scanned the BBC article for more details. It turns out that BBC was merely parroting what it had been told by SANS. OK, let's see what SANS has to say... more»
As we, here in the United States celebrate our independence this Fourth of July, we are reminded that the liberties and freedoms that come with that independence have yet to be won online. As citizens of this country we are blessed with safety and security from threats both foreign and domestic, but those guarantees have not yet extended to our citizenship in the global Internet community. This is true not just for American citizens, but for all Internet users throughout the world. more»
