IDG Contributor Network: An internet for everyone? Not yet

It’s in our phones, TVs, toasters, cars, watches, toothbrushes – even in the soles of our shoes. The internet is everywhere. Right?Well, no. About 47 percent of the global population of 7.6 billion people doesn’t have internet access, as tough as that is for those of us in internet-rich locales to imagine. But companies are working on ways to bridge this digital divide, and systems based on low-earth-orbit (LEO) satellites are becoming a big part of the conversation.The benefits of satellite internet are obvious in places where land-based network infrastructure doesn’t exist. But while systems based on high-orbit satellites need only minimal ground equipment to reach remote places, a range of complications – including cost, speed and performance – prevent them from being a global solution. LEO systems aim to get past the problems by getting closer to earth.To read this article in full, please click here

IDG Contributor Network: An internet for everyone? Not yet

It’s in our phones, TVs, toasters, cars, watches, toothbrushes – even in the soles of our shoes. The internet is everywhere. Right?Well, no. About 47 percent of the global population of 7.6 billion people doesn’t have internet access, as tough as that is for those of us in internet-rich locales to imagine. But companies are working on ways to bridge this digital divide, and systems based on low-earth-orbit (LEO) satellites are becoming a big part of the conversation.The benefits of satellite internet are obvious in places where land-based network infrastructure doesn’t exist. But while systems based on high-orbit satellites need only minimal ground equipment to reach remote places, a range of complications – including cost, speed and performance – prevent them from being a global solution. LEO systems aim to get past the problems by getting closer to earth.To read this article in full, please click here

BLeak: automatically debugging memory leaks in web applications

BLeak: Automatically debugging memory leaks in web applications Vilk & Berger, PLDI’18

BLeak is a Browser Leak debugger that finds memory leaks in web applications. You can use BLeak to test your own applications by following the instructions at http://bleak-detector.org.

Guided by BLeak, we identify and fix over 50 memory leaks in popular libraries and apps including Airbnb, AngularJS, Google Analytics, Google Maps SDK, and jQuery. BLeak’s median precision is 100%; fixing the leaks it identifies reduces heap growth by an average of 94%, saving from 0.5MB to 8MB per round trip.

Why are web application memory leaks so problematic?

Memory leaks in web applications are a pervasive problem. They lead to higher garbage collection frequency and overhead, reduced application responsiveness, and even browser tab crashes. Existing memory leak detection approaches don’t work well in the browser environment though:

  • Staleness detection assumes leaked memory is rarely touched, but web apps regularly interact with leaked state (e.g. via event listeners).
  • Growth-based technique assume that leaked objects are uniquely owned, or that leaked objects from strongly connected components in the heap graph. In a web application, objects frequently have multiple owners, and all roads lead back to window.
  • Techniques Continue reading

Check Out Our New Certified Information System Auditor Course





This 6 hour course is designed for those that are preparing for the CISA exam. Expert instructor, Etienne Poeder, explains what to expect from this course, as well as who the course is designed for below:

The amount of effort required to ace this exam will depend on both your relevant knowledge and experience. Mere knowledge is insufficient for passing the exam because the exam doesn’t just test your familiarity with exam topics, but also your ability to actually apply your skills and education. An accounting/non-IS auditing background prior to this exam will likely work, but it is going to be more challenging with regard to your technical IT knowledge. As for the more techie professional, you will probably already understand the security and technology basics, but still need to show whether you understand the do’s and don’ts within auditing and related area’s in different types of organizations and architectures.

Whether you are an auditor or security professional, you can benefit from this course. I have done my best making sure we hit the ground running with the preparation for your exam. If you lack both the auditing as well as the technical knowledge/experience, this course will still benefit you, but it will be more challenging. You will need to prepare properly for the CISA exam to ace it. Of course, I will give you exam tips along the way and practical examples within the IT Audit security job practice to make studying a less bitter pill to swallow.

I will cover all 5 domains, which will summarize the most current information from the revised book according to the 2016 CISA Job Practice. This book is the most comprehensive peer-reviewed IS Audit, assurance, security and control resource available worldwide.

I have added assessment questions so you can test your knowledge and become more familiarized with the question types, structures and topics featured in the CISA exam. I have made a fine representative selection of questions, extracted from a 1,000 multiple-choice study exam that has previously appeared in the CISA Review Questions, Answers and Explained manual 2015 and the CISA Review Questions, Answers & Explanations Manual 2015 Supplement, both current and in accordance with the newly revised 2016 Job Practice.

So you want to be a professional auditor?

Go get your proper assistance for the CISA exam today!

IDG Contributor Network: 4 ways to avoid cloud outages and improve system performance

When most people encounter headlines about high-profile cloud outages, they think about the cloud vendor's name, or how the negative publicity might affect stock prices. I think about the people behind the scenes—the ones tasked with fixing the problem and getting customer systems back up and running.Despite their best efforts, the occasional outage is inevitable. The internet is a volatile place, and nobody is completely immune to this danger. Fortunately, there are some straightforward steps businesses can take to guard against the possibility of unplanned downtime.Here are four ways to avoid cloud outages while improving security and performance in the process:To read this article in full, please click here

IDG Contributor Network: 4 ways to avoid cloud outages and improve system performance

When most people encounter headlines about high-profile cloud outages, they think about the cloud vendor's name, or how the negative publicity might affect stock prices. I think about the people behind the scenes—the ones tasked with fixing the problem and getting customer systems back up and running.Despite their best efforts, the occasional outage is inevitable. The internet is a volatile place, and nobody is completely immune to this danger. Fortunately, there are some straightforward steps businesses can take to guard against the possibility of unplanned downtime.Here are four ways to avoid cloud outages while improving security and performance in the process:To read this article in full, please click here

IDG Contributor Network: Scalable groups tags with SD-Access

Perimeter-based firewalls When I stepped into the field of networking, everything was static and security was based on perimeter-level firewalling. It was common to have two perimeter-based firewalls; internal and external to the wide area network (WAN). Such layout was good enough in those days.I remember the time when connected devices were corporate-owned. Everything was hard-wired and I used to define the access control policies on a port-by-port and VLAN-by-VLAN basis. There were numerous manual end-to-end policy configurations, which were not only time consuming but also error-prone.There was a complete lack of visibility and global policy throughout the network and every morning, I relied on the multi router traffic grapher (MRTG) to manual inspect the traffic spikes indicating variations from baselines. Once something was plugged in, it was “there for life”. Have you ever heard of the 20-year-old PC that no one knows where it is but it still replies to ping? In contrast, we now live in an entirely different world. The perimeter has dissolved, resulting in perimeter-level firewalling alone to be insufficient.To read this article in full, please click here

IDG Contributor Network: Scalable groups tags with SD-Access

Perimeter-based firewalls When I stepped into the field of networking, everything was static and security was based on perimeter-level firewalling. It was common to have two perimeter-based firewalls; internal and external to the wide area network (WAN). Such layout was good enough in those days.I remember the time when connected devices were corporate-owned. Everything was hard-wired and I used to define the access control policies on a port-by-port and VLAN-by-VLAN basis. There were numerous manual end-to-end policy configurations, which were not only time consuming but also error-prone.There was a complete lack of visibility and global policy throughout the network and every morning, I relied on the multi router traffic grapher (MRTG) to manual inspect the traffic spikes indicating variations from baselines. Once something was plugged in, it was “there for life”. Have you ever heard of the 20-year-old PC that no one knows where it is but it still replies to ping? In contrast, we now live in an entirely different world. The perimeter has dissolved, resulting in perimeter-level firewalling alone to be insufficient.To read this article in full, please click here

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