Dennis Fisher

About

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

Mozilla Fixes Filter Bypass Bug in Thunderbird

Mozilla has fixed a serious vulnerability in its Thunderbird email application that enables an attacker to bypass the filter in Thunderbird that prevents HTML tags from being used in messages. Exploiting the bug could give an attacker the ability to run code on a user’s machine.

Michaels Data Breach Under Investigation

Officials at Michaels, the large craft and home goods retailer, are investigating a potential data breach that has apparently affected an unknown number of cards used in the chain’s stores in the last few weeks.

Threatpost News Wrap, January 24, 2014

Dennis Fisher and Mike Mimoso talk about the big security stories of the last couple of weeks, including the developments in the Target data breach, the president’s speech on NSA surveillance reforms and SCADA security woes.


Remote code execution bugs are the gold nuggets of security research. They’re the ones that researchers stay up all night looking for and they’re the kind of vulnerabilities that often are worth big money, whether it’s from a vulnerability broker, a government agency or a bug bounty program. For Reginaldo Silva, when he came across […]

After months of public calls from privacy advocates and security experts, Verizon on Wednesday released its first transparency report, revealing that it received more than 164,000 subpoenas and between 1,000 and 2,000 National Security Letters in 2013. The report, which covers Verizon’s landline, Internet and wireless services, shows that the company also received 36,000 warrants, […]

There is a bug in the anti-cross site scripting filter in Chrome and Safari that enables an attacker to bypass the filter in some cases and use an XSS flaw on a given site to compromise visitors’s machines. The vulnerability is fairly simple to exploit and a researcher has posted proof-of-concept code. The vulnerability lies […]

If you think you’re being clever by basing your password on the site you’re visiting or adding a zero to the end of 123456789, you’re not. A new list of the 25 worst passwords, culled from public dumps of passwords stolen in data breaches, shows that these are some of the least useful passwords you […]

For the people expecting President Barack Obama to announce sweeping changes to the NSA’s surveillance programs, his speech on Friday likely was a major disappointment. Obama laid out some new controls and limits for some of the more controversial programs, specifically the phone metadata collection system, but much of the speech focused on why the […]