Dennis Fisher

About

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

Firefox 37 to Include New OneCRL Certificate Blocklist

The next version of Mozilla Firefox will include a new certificate revocation list that will speed up and streamline the process of revoking intermediate certificates trusted by the browser. The new feature, known as OneCRL, is meant as a replacement for the old OCSP (online certificate status protocol) system that is used now to check […]

New FREAK Attack Threatens Many SSL Clients

For the nth time in the last couple of years, security experts are warning about a new Internet-scale vulnerability, this time in some popular SSL clients. The flaw allows an attacker to force clients to downgrade to weakened ciphers and break their supposedly encrypted communications through a man-in-the-middle attack. Researchers recently discovered that some SSL […]


Some D-Link routers contain a vulnerability that leaves them open to remote attacks that can give an attacker root access, allow DNS hijacking and other attacks. The vulnerability affects affects a number of D-Link’s home routers and the key details of the flaw have been made public by one of the researchers who discovered it. […]

Mozilla has issued a hot fix for Firefox that removes the Superfish root certificate from the browser’s trusted root store. The patch only removes the certificate if the Superfish software has been removed from the machine already, however. The Superfish adware performs SSL interception–essentially running man-in-the-middle attacks on connections to secure sites–in the name of […]

Twitter has revised and simplified its rules and process for reporting abusive behavior on the service, and users now have the ability to report people who are posting their personal information. The change essentially gives Twitter users a method to combat doxing, which is the process of dumping a victim’s personal information online. This often […]

Mozilla has patched 16 security vulnerabilities in Firefox, including three critical flaws in the browser. One of the critical vulnerabilities patched with the release of Firefox 36 is a buffer overflow in the libstagefright library that can be exploitable under some circumstances. “Security researcher Pantrombka reported a buffer overflow in the libstagefright library during video […]

On May 30, 2014, law enforcement officials from the FBI and Europol seized a series of servers that were being used to help operate the GameOver Zeus botnet, an especially pernicious and troublesome piece of malware. The authorities also began an international manhunt for a Russian man they said was connected to operating the botnet, […]

Despite leaked documents from the NSA showing otherwise, officials at Gemalto on Wednesday said the company has found no evidence that its SIM card infrastructure was compromised several years ago by the NSA and GCHQ. The company identified a handful of what it called sophisticated attacks in the timeframe in questions, but said none of […]