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Supercomputer – You focus the speed of CPU, but my design goal is efficiency (Nov 2018)
Preface: The art of driving a car in a race comes from the ability to maximize the performance of the car. Everything you do on a track takes skill when you are reaching the limits of performance. This concept also suitable on computer design. Japan supercomputer rating: Fujitsu ranks supercomputers seventh in the world. Cores:…
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Supercomputer – Who’s running fastest in the world? Nov 2018
Preface: When executing a process by switching it between various CPU cores is that, when switching a process to a new CPU core, the “L1” cache of the new core has to be updated and the previous core’s “L1” cache might requires to be deleted etc. Whereby in a somewhat unnecessary cache activity that ultimately…
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AWS S3 Misconfigurations how to Avoid?
Preface: AWS cloud business keep running strong in the market. Amazon S3 or Amazon Simple Storage Service is a “simple storage service” offered by Amazon Web Services (AWS) that provides object storage through a web service interface. Synopsis: S3 buckets can be configured with public access. But S3 looks like a burden for AWS reputation.…
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SWIFT Customer Security Controls Framework
Preface: All SWIFT users must comply with the mandatory security controls by the end of 2018. Objective: Introduction of new controls or guidelines will take account of strong cybersecurity practices that address the currently known new and arising threats in order to pragmatically raise the security bar. Technical details: Mandatory Security Controls 1. Restrict…
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Reflections – New 5G network edge server design
NSA Senior Cybersecurity Advisor questions Bloomberg Businessweek’s China iCloud spy chip claim (see below url) http://macdailynews.com/2018/10/10/nsa-senior-cybersecurity-advisor-questions-bloomberg-businessweeks-china-icloud-spy-chip-claim/ Now we take a quick discussion but do not related to conspiracy. From technical point of view, if hardware is polluted (spy feature). It is hard to imagine what the impact was? In the SD-branch, routing, firewall, and WAN…
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Aug 2018 – Similar to establish new challenge in IT world, mingw-w64 design limitation!
Address space layout randomization (ASLR) is a computer security technique involved in preventing exploitation of memory corruption vulnerabilities. ASLR function like the last line of defense of the system against cyber attack. Recently, security expert comment that the software application developer might not following guideline issue by CPU vendor. The fact is that an error…
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Synopsis- NIST plan to retire SMS function deployed for two Factor Authentication
As of today, we are enjoying the security protection of 2 factor authentication with SMS-based one-time passwords (OTP). This protection mechanism was distributed widely. For instance, online banking, Visa,Master credit card online payment system and mobile application payment system. However NIST plan to retire SMS base 2 factor authentication. This decision has similar a open topic…
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Who is most faster? Crossbar SW or PCR?
Preface China won 1st of the TOP500 list of the world’s top supercomputers on June 2016. Can we say PCR is the mainstream? Or still keep crossbar switch deployment? Who’s ready to break a record today? IBM announced on June 2018. SUMMIT’s do mathematical calculations at the rate of 200 quadrillion per second, or 200…
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Easily Bypass iPhone Encryption – Apr 2018
Headline news report that law enforcement agencies across the country have purchased GrayKey, a relatively cheap tool for bypassing the encryption on iPhones, while the FBI pushes again for encryption backdoors. It looks that a great opportunities for technology firm. It can receive rewards. It is indeed a win win situation. Tech firm can earn…
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Advantech WebAccess/SCADA – CVE-2018-5443 – CVE-2018-5445
Preface: SCADA systems are the backbone of many modern industries, including: Energy, Food and beverage, Manufacturing, Oil and gas, Power, Recycling, Transportation, Water and waste water,….etc SCADA evolution: The first generation of SCADA system relies with mainframe computers. As time goes by, the evolutionary of SCADA build on top of open system foundation (Unix) in…