Dennis Fisher

About

Dennis Fisher is a journalist with more than 13 years of experience covering information security.

Java Still a Favorite Target of Attackers

Java has become virtually unavoidable in the last few years, and it’s installed on hundreds of millions of PCs around the world. A huge number of those installations are vulnerable versions of Java, and this fact has not escaped the attention of attackers, who have made the technology one of their favored targets. In fact, new data from Microsoft shows that Java exploits were the most prevalent in the first six months of 2011, and that attackers often use exploits for bugs that are several months or years old.

Duqu Attackers Wiped Out C&C Infrastructure After Public Disclosures

Researchers have known for years that virus writers and attackers pay close attention to the analyses researchers do of their work, and it appears that the Duqu authors are no exception. Shortly after the first public reports about Duqu emerged in early autumn, the crew behind Duqu wiped out all of the command-and-control servers that had been in use up to that point, including some that had been used since 2009.

Google Researchers Propose New Plan to Shore Up CA System

The security industry has no shortage of hard problems to solve, but the one that’s getting the most attention right now is finding a way to improve, or ideally, replace, the CA infrastructure. The latest in what has become a series of recent proposals to help shore up the certificate authority system comes from a pair of Google security researchers who have laid out a plan for providing auditable public logs of certificates as well as proofs for each certificate that’s issued.


A new worm has popped up on Facebook, using apparently stolen user credentials to log in to victims’ accounts and then send out malicious links to their friends. The worm also downloads and installs a variety of malware on users’ machines, including a variant of the Zeus bot.

SMS Trojans that ride along on supposedly benign mobile apps and then send out messages to high-priced numbers have been a problem in some Asian and Eastern European countries for several years now, most notably in Russia and China. But now the attackers have realized that there’s a whole big world of users out there to target and have begun going after people in other countries with new strains of SMS malware.

Duqu has been called the spawn of Stuxnet, or maybe some sort of stepchild or second cousin. That initial analysis came from some similarities in the code of the two attack tools, and now that researchers have had more time to pull Duqu apart and see how it works, it seems more and more likely that the two were written by the same group. In the second part of an interview with Costin Raiu, who has done a lot of research on Duqu, Threatpost editor Dennis Fisher talks with Raiu about the similarities to Stuxnet, the targets for Duqu and why the authors may have made a key mistake.

Stuxnet has become the bogeyman of Internt security and cyberwar, showing up in marketing pitches, PowerPoint presentations and press releases from Washington to Silicon Valley to Tehran. But while Stuxnet has been garnering headlines for more than a year now, the far more serious threat in terms of potential long-term damage has turned out to be Duqu. The malware first came to light in September, but it may have been circulating four or five months before that. Its customizable, modular architecture has been a challenge for researchers seeking to understand its operation and its creators’ intentions. Threatpost editor Dennis Fisher spoke with Costin Raiu, one of the main researchers working on Duqu at Kaspersky Lab, about the relationship between Stuxnet and Duqu, the possible identity of the attackers and the investigation into its architecture.

A security researcher who has in the past has created low-level rootkits capable of staying resident on an infected machine after reboots, said he has now accomplished the same feat on Windows 8, which hasn’t even hit the shelves yet. Peter Kleissner said he has created a new version of his Stoned bootkit that defeats the pre-boot security checks included in the forthcoming OS and survives reboots.