Ask High Scalability: How to build anonymous blockchain communication?

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I am building a 2 way subscription model I am working on a blockchain project where in I have to built a information/data portal where in I will have 2 types of users data providers and data recievers such that there should be anonimity between both of these.

Please guide me how can I leverage blockchain (I think Etherium would be useful in this context but not sure) so that data providers of my system can send messages to data receivers anonymously and vice versa data receivers can request for data through my system to data providers.

I believe, it work if we can create a system where in if a user has data, it will send description to the server, The system will host this description about data without giving the data provider details.

Simultaneously server will store info which user has the data. When data receiver user logs in to system and wants and sees the description of data and wants to analyze that data, it will send request to server for that data. This request is Continue reading

Analysis of CryptFile2 Ransomware Server

Download ASERT Threat Intelligence Report 2016-06 here This report describes several elements of a ransomware staging system using the Nemucod malware to deliver CryptFile2 (aka Hydracrypt.A and Win32/Filecoder.HydraCrypt.C) ransomware, an ongoing threat since at least mid-March of 2016. This report reveals TTP’s (tactics, techniques, procedures) of […]

Analysis of CryptFile2 Ransomware Server

Download ASERT Threat Intelligence Report 2016-06 here This report describes several elements of a ransomware staging system using the Nemucod malware to deliver CryptFile2 (aka Hydracrypt.A and Win32/Filecoder.HydraCrypt.C) ransomware, an ongoing threat since at least mid-March of 2016. This report reveals TTP’s (tactics, techniques, procedures) of threat actors, including insight derived from limited interactions via e-mail. […]

IDG Contributor Network: Stanford researchers attempt vodka-based Internet messaging

Sending Internet of Things, or IoT messages using liquids, such as vodka or glass cleaner, could replace light as the next go-to network carrier for the Internet.Pulses of liquid chemicals, replicating the ones-and-zeros of traditional electron-based data streams are better than copper wires, wireless or fiber because they’re cheaper, and aren’t susceptible to the same kind of interference, claim the inventors from Stanford University. Wireless signals, for example, can run into problems among large masses of metals.Vodka was the liquid of choice for the first of the pH-based messaging tests run by the school, but amusingly failed due to the receiving computer getting “too saturated with vodka to receive more messages,” according to fellow Nariman Farsad, who has been working on the concept.To read this article in full or to leave a comment, please click here

Worth Reading: DevOps and what’s in a name

As is normal in engineering endeavors, we often forget the purpose or the problem we are trying to solve and instead get mired in the details of the process or the tool. We tend to lose site that bringing DevOps together has the purpose of solving how to more rapidly deliver higher-quality, more secure products to our customers, so they can solve their problems and we stay ahead of our competitors. —Cloud Security Alliance

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Is The Rise Of SD-WAN Thanks To Ethernet?

Ethernet

SD-WAN has exploded in the market. Everywhere I turn, I see companies touting their new strategy for reducing WAN complexity, encrypting data in flight, and even doing analytics on traffic to help build QoS policies and traffic shaping for critical links. The first demo I ever watched for SDN was a WAN routing demo that chose best paths based on cost and time-of-day. It was simple then, but that kind of thinking has exploded in the last 5 years. And it’s all thanks to our lovable old friend, Ethernet.

Those Old Serials

When I started in networking, my knowledge was pretty limited to switches and other layer 2 devices. I plugged in the cables, and the things all worked. As I expanded up the OSI model, I started understanding how routers worked. I knew about moving packets between different layer 3 areas and how they controlled broadcast storms. This was also around the time when layer 3 switching was becoming a big thing in the campus. How was I supposed to figure out the difference between when I should be using a big router with 2-3 interfaces versus a switch that had lots of interfaces and could route just as Continue reading

An Early Look at Ansible Container v0.3.0

ansible-container-blog-header.png

The Ansible Container project is targeting mid-January for its next release, and so we thought now would be a good time to check in and look at the features actively under development and anticipated to ship.

With only a glance at the roadmap page, the casual visitor may think it seems a bit smallish, having only three items. However, the items represent features that are important to the project, and require a level of effort that’s anything but small, as we’ll see.

Building container images

The first item up is an image build cache. Building container images is of course a core function of the tool, and having a caching mechanism can improve the speed at which images are built.

If you’re not familiar with container images and how they’re built, think of an image as a tall building with dozens of floors, where each floor is layered on top of the previous floor, starting with the building’s foundation, and adding one floor or layer at a time until you reach the top. In the same way, a container image is a file system built in layers.

The build process starts with a base image, say Fedora 25, Continue reading

Datanauts 64: Advancing Your IT Career

Todays Datanauts episode is about how to advance your IT career. We talk with trainer Neil Anderson about developing a plan & get insights from a survey of CTOs & HR leaders about what theyre looking for in IT employees The post Datanauts 64: Advancing Your IT Career appeared first on Packet Pushers.

Lessons learned from the 7 major cyber security incidents of 2016

Cyber incidents dominated headlines this year, from Russia’s hacking of Democrat emails to internet cameras and DVRs launching DDoS attacks, leaving the impression among many that nothing should be entrusted to the internet. These incidents reveal technical flaws that can be addressed and failure to employ best practices that might have prevented some of them from happening. +More on Network World: Gartner Top 10 technology trends you should know for 2017+To read this article in full or to leave a comment, please click here

Lessons learned from the 7 major cyber security incidents of 2016

Cyber incidents dominated headlines this year, from Russia’s hacking of Democrat emails to internet cameras and DVRs launching DDoS attacks, leaving the impression among many that nothing should be entrusted to the internet. These incidents reveal technical flaws that can be addressed and failure to employ best practices that might have prevented some of them from happening. +More on Network World: Gartner Top 10 technology trends you should know for 2017+To read this article in full or to leave a comment, please click here

Know your (cyber) enemy

Picture this: Your company's network is facing a DDoS attack, but you have no idea who is responsible or what their motivation might be. Without this knowledge, you can't tell if they want money in exchange for stopping the attack or if the attack is a diversion to occupy your security team while your network is being penetrated and commercial secrets are stolen.In the aftermath of a network breach it can also be incredibly useful to know some information about the likely attackers. That's because knowing who they were — or just where they were from — can help you carry out a more accurate damage assessment exercise.  This knowledge can guide you where to look for signs of data compromise, and what other specifics (such as exploit kits or Trojans that may have been left behind) to search for.To read this article in full or to leave a comment, please click here

Know your (cyber) enemy

Picture this: Your company's network is facing a DDoS attack, but you have no idea who is responsible or what their motivation might be. Without this knowledge, you can't tell if they want money in exchange for stopping the attack or if the attack is a diversion to occupy your security team while your network is being penetrated and commercial secrets are stolen.In the aftermath of a network breach it can also be incredibly useful to know some information about the likely attackers. That's because knowing who they were — or just where they were from — can help you carry out a more accurate damage assessment exercise.  This knowledge can guide you where to look for signs of data compromise, and what other specifics (such as exploit kits or Trojans that may have been left behind) to search for.To read this article in full or to leave a comment, please click here

Adobe fixes actively exploited critical vulnerability in Flash Player

Adobe Systems has released security updates for several products, including one for Flash Player that fixes a critical vulnerability that's already known and exploited by attackers.The Flash Player update fixes 17 vulnerabilities, 16 of which are critical and can be exploited to execute malicious code on affected systems. One of those vulnerabilities, tracked as CVE-2016-7892 in the Common Vulnerabilities and Exposures (CVE) catalogue, is already being used by hackers."Adobe is aware of a report that an exploit for CVE-2016-7892 exists in the wild, and is being used in limited, targeted attacks against users running Internet Explorer (32-bit) on Windows," the company said in a security advisory.To read this article in full or to leave a comment, please click here

Adobe fixes actively exploited critical vulnerability in Flash Player

Adobe Systems has released security updates for several products, including one for Flash Player that fixes a critical vulnerability that's already known and exploited by attackers.The Flash Player update fixes 17 vulnerabilities, 16 of which are critical and can be exploited to execute malicious code on affected systems. One of those vulnerabilities, tracked as CVE-2016-7892 in the Common Vulnerabilities and Exposures (CVE) catalogue, is already being used by hackers."Adobe is aware of a report that an exploit for CVE-2016-7892 exists in the wild, and is being used in limited, targeted attacks against users running Internet Explorer (32-bit) on Windows," the company said in a security advisory.To read this article in full or to leave a comment, please click here

Manage Cloudflare records with Salt

We use Salt to manage our ever growing global fleet of machines. Salt is great for managing configurations and being the source of truth. We use it for remote command execution and for network automation tasks. It allows us to grow our infrastructure quickly with minimal human intervention.

Salt

CC-BY 2.0 image by Kevin Dooley

We got to thinking. Are DNS records not just a piece of the configuration? We concluded that they are and decided to manage our own records from Salt too.

We are strong believers in eating our own dog food, so we make our employees use the next version of our service before rolling it to everyone else. That way if there's a problem visiting one of the 5 million websites that use Cloudflare it'll get spotted quickly internally. This is also why we keep our own DNS records on Cloudflare itself.

Cloudflare has an API that allows you to manage your zones programmatically without ever logging into the dashboard. Until recently, we were using handcrafted scripts to manage our own DNS records via our API. These scripts were in exotic languages like PHP for historical reasons and had interesting behavior that not everybody enjoyed. Continue reading

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