Dennis Fisher

About

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

GlobalSign Commits to Certificate Transparency Framework

If you were going to try and determine who has had a worse go of it recently, the NSA or certificate authorities, you’d likely have to just flip a coin. And the coin would probably end up balanced on its edge. While the National Security Agency is scrambling to respond to and recover from the […]

Questions About Crypto Security Follow Latest NSA Revelations

As security experts and cryptographers continue to debate and discuss the implications of the revelations of the NSA’s capabilities against various encryption protocols and systems, some of the larger Internet companies are taking steps to protect their users’ data against the new threat. Google, which has been in the middle of many of the conversations […]


It’s long been known that Java and Flash are favored targets of attackers, thanks to their huge install bases and numerous security issues. And the users who are targeted by these attacks aren’t doing themselves any favors either, as new research shows that 19 percent of business users are running the newest version of Java, […]

In the wake of the revelations surrounding the NSA’s domestic surveillance and intelligence-gathering operations, security experts said there would likely be a natural uptick in the usage of privacy focused tools such as Tor, PGP and other encryption services. In the case of Tor, there has been more than a slight increase–the number of Tor […]

Dennis Fisher and Mike Mimoso discuss the big stories of the last couple of weeks, including the Syrian Electronic Army’s attacks against the registrar for the New York Times and Twitter, and the release of Facebook’s first transparency report.

Late Tuesday morning, one of the engineers in CloudFlare’s San Francisco office saw a message on Twitter saying that the New York Times Web site was down. Minutes later, more messages appeared, as security researchers and others began looking into the situation and realized that someone may have compromised the site’s DNS records. Understanding the ramifications of that sort of attack, if that’s in fact what it was, Matthew Prince, CloudFlare’s CEO sent an email to Rajiv Pant, the CTO of the Times, saying that the company’s engineers would be available if Pant needed some help figuring out the situation. He did.

There is a critical remotely exploitable vulnerability in Cisco’s Secure Access Control Server which allows a remote attacker to take complete control of a vulnerable server. The bug results from a bad implementation of the EAP-FAST protocol and it affects a number of versions of the Cisco ACS. The vulnerability is a highly critical one, […]