Deep technical analysis of the CONTINUATION
Flood: a class of vulnerabilities within numerous HTTP/2 protocol implementations. In many cases, it poses a more severe threat compared to the Rapid Reset: a single machine (and in certain instances, a mere single TCP connection or a handful of frames) has the potential to disrupt server availability, with consequences ranging from server crashes to substantial performance degradation. Remarkably, requests that constitute an attack are not visible in HTTP access logs. **A simplified security advisory and the list of affected projects can be found in: http2-continuation-flood
Anyone who has had to deal with HTML emails on a technical level has probably reached the point where they wanted to quit their job or just set fire to all the mail clients due to their inconsistent implementations. But HTML emails are not just a source of frustration, they can also be a serious security risk.
Attackers could exploit a high-severity cross-site Scripting (XSS) vulnerability in the WP-Members Membership WordPress plugin to inject arbitrary scripts into web pages, according to an advisory from security firm Defiant.
Google’s parent company, Alphabet, has filed a lawsuit against two people based in China for using the company’s platform for scam cryptocurrency apps that amassed over 100,000 downloads.
Alphabet claims that scammers used its platforms, Google Play and YouTube, to upload and advertise fraudulent crypto apps.
Throughout the past few months, several publications have written about a North Korean threat actor group’s use of NPM packages to deploy malware to developers and other unsuspecting victims. This blog post provides additional details regarding the second and third-stage malware in these attacks, which these publications have only covered in limited detail.
Roughly nine years ago, KrebsOnSecurity profiled a Pakistan-based cybercrime group called "The Manipulaters," a sprawling web hosting network of phishing and spam delivery platforms. In January 2024, The Manipulaters pleaded with this author to unpublish previous stories about their work,…
On March 29, right before Easter weekend, we received notifications about something unusual happening with the open-source project XZ Utils, which provides lossless data compression on virtually all Unix-like operating systems, including Linux.
The initial warning was sent to the Open Source Security mailing list sent by Andres Freund, who discovered that XZ Utils versions 5.6.0 and 5.6.1 are impacted by a backdoor. A few hours later, the US government’s CISA and OpenSSF warned about a critical problem: an installed XZ backdoored version could lead to unauthorized remote access.
A threat activity cluster tracked as Earth Freybug has been observed using a new malware called UNAPIMON to fly under the radar.
"Earth Freybug is a cyberthreat group that has been active since at least 2012 that focuses on espionage and financially motivated activities," Trend Micro security researcher Christopher So said in a report published today.