Category: "Security Engineering"

About the Security Engineering category

  22:47, by Hagai Bar-El   , 49 words
Categories: Security Engineering

The Security Engineering category contains articles that discuss analysis of requirements and solutions that are of interest to the security engineer. As opposed to the IT Security category, the articles of this category address not the secure deployment of systems, but the secure design of systems -- software and hardware.

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  2014-04-03

Bitcoin does not provide anonymity

  22:22, by Hagai Bar-El   , 762 words
Categories: Security Engineering, Security Policies, Security, Counter-media

When people discuss Bitcoin, one of its properties that is often considered is its presumable anonymity. In this respect, it is often compared to cash. However, it shall be recognized and understood that Bitcoin is not as anonymous as cash; far from it, actually. Its anonymity relies on the concept of pseudonyms, which delivers some (unjustified) sense of anonymity, but very weak anonymity in practice.

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My new patent on secure key provisioning

  12:02, by Hagai Bar-El   , 151 words
Categories: Personal News, Security Engineering

I recently got a US patent application granted by the Patent and Trademark Office. The patent bears the title "Methods Circuits Devices and Systems for Provisioning of Cryptographic Data to One or More Electronic Devices".

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  2014-01-29

SnapChat and client authentication

  21:37, by Hagai Bar-El   , 25 words
Categories: Security Engineering

Visit: http://www.discretix.com/blog/hacked-in-a-snap/

A post I have written about the SnapChat hack, and what it can teach us on the need for secure execution and secure client authentication.

  2013-09-15

How risky to privacy is Apple's fingerprint reader?

  22:11, by Hagai Bar-El   , 964 words
Categories: IT Security, Security Engineering

Congratulations to Apple for featuring a fingerprint reader as part of its new iPhone. It was reported by The Wall Street Journal here, in the blog of Bruce Schneier here, by Time Tech here, and in dozens of other places. Very much expectedly, this revelation spurred anxiety among the conspiracy theorists out there. The two common concerns that were raised are:

  • Apple will have a database of all our fingerprints.
  • What if someone breaks into the device and gets at our fingerprint?

(There is another line of concern, related to the fifth amendment and how its protection may be foiled by authenticating using biometrics alone, but this is a legal concern which is off topic.)

While a bit of paranoid thinking is always helpful, security engineering requires more than crying out each time a mega-corporate launches a new technology that involves private data. Assets and threats need to be determined, and then we can decide whether or not the risk is worth the benefits.

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  2013-02-05

My new patent on a secure execution environment

  23:32, by Hagai Bar-El   , 119 words
Categories: Personal News, Security Engineering

I recently got a US patent application granted by the Patent and Trademark Office. The patent bears the title "Device, System, and Method of Securely Executing Applications".

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  2011-07-30

Handling the Security Aspect of Smart Grid Product Purchasing

  23:33, by Hagai Bar-El   , 1581 words
Categories: Security Engineering, Cyber Security

Smart Grid security is one of the new emerging fields of security. Everybody knows that the new generation of electricity grids requires a new level of security against cyber-wars, cyber-terrorism, and all the rest. Yet, for the purchaser of Smart Grid solutions, it is not always obvious where to start and that to require. The topic is wide, complex, and not very well documented. I do not intend to write a compendium here, but I will share my perspective on how an integrator, or purchaser, may prefer to approach the problem of evaluating Smart Grid solutions from the security perspective.

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  2011-06-20

The Difference Between Content Protection and Cyber Security

  23:32, by Hagai Bar-El   , 1156 words
Categories: Security Engineering

A few days ago I was presented with an interesting question: What is the difference between Content Protection and Cyber Security? These domains of Information Security are so different and unrelated, that the difference in their definition is more or less the entire definition of both. This question, however, was asked in the context of the factors that make each of these problems hard to solve. Both problems are hard ones, and seem to require more than the state of the art in security can provide; yet they are hard problems for completely different reasons.

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