Technology
After a month of reverse-engineering, we’re excited to release documentation on the Valhall instruction set, available as a PDF. The findings are summarized in an XML architecture description for machine consumption. In tandem with the documentation, we’ve developed a Valhall assembler and disassembler as a reverse-engineering aid. Valhall
gpu benchmark
Explanation of the various GPU architectures The behavior of the graphics pipeline is practically standard across platforms and APIs, yet GPU vendors come up with unique solutions to accelerate it, the two major architecture types being tile-based and immediate-mode rendering GPUs. In this article we explore how they work, present
Cloud Security
* VPCs by default use the Amazon-provided DNS which can be used to bypass some network-level protection mechanisms (e.g. NACLs or SGs) or monitoring (e.g. VPC Flow Logs). * Recently a new service has been released: the Route 53 Resolver DNS Firewall which allows for blocking and monitoring DNS queries
Challenge/Opportunity The customer managed their projects, clients, invoicing and finance, as well as the contractors engaged in each project, using a variety of different platforms and spreadsheets. The majority of data entry and aggregation were performed manually or through Excel files, and data integration and transition across disparate systems
Cloud Security
The client, a global leader in the import and marketing of high-quality tires, offers wholesale tire dealers with services in over 55 countries. The firm is committed to providing high-quality services and goods to its clients and believes in investing extensively in its employees to ensure that each employee understands
Health
CVE-2021-22555 is a 15 years old heap out-of-bounds write vulnerability in Linux Netfilter that is powerful enough to bypass all modern security mitigations and achieve kernel code execution. It was used to break the kubernetes pod isolation of the kCTF cluster and won 10000$ for charity (where Google will match
Cloud Security
* VPCs by default use the Amazon-provided DNS which can be used to bypass some network-level protection mechanisms (e.g. NACLs or SGs) or monitoring (e.g. VPC Flow Logs). * Recently a new service has been released: the Route 53 Resolver DNS Firewall which allows for blocking and monitoring DNS queries
Cloud Security
Late in 2019, I was hired at a streaming service focused on short form content to help build the data platform. One key component of this streaming service was the focus on mobile consumption, and this necessitated that our data platform handle late arriving data gracefully. I used the example
Cloud Security
Summary The REvil ransomware (a.k.a Sodinokibi) is a threat group that operates in the RaaS (Ransomware-as-a-Service) model, where the infrastructure and the malware are supplied to affiliates, who use the malware to infect target organizations. On July 2, the REvil threat group launched a supply chain ransomware attack
Cloud Security
The process of writing code and delivering it to AWS Lambda is as straightforward as making a cake (depending on the type of cake). From providing to scalability, Lambda takes care of the heavy lifting. However, where is the magic taking place and how does it work in practice? Together,
Technology
Programming language memory models answer the question of what behaviors parallel programs can rely on to share memory between their threads. For example, consider this program in a C-like language, where both x and done start out zeroed. // Thread 1 // Thread 2 x = 1; while(done == 0) { /* loop */ } done = 1;
The below documentation is the latest update on the most recent updates pertaining to the massive global ransomware attack. We are tracking over 30 MSPs across the US, AUS, EU, and LATAM where Kaseya VSA was used to encrypt well over 1,000 businesses and are working in collaboration with
