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+ - Shades of Jack Ryan: altering text in eBooks to track pirates->

Submitted by wwphx
wwphx writes "German researchers have created a new DRM feature that changes the text and punctuation of an e-book ever so slightly. Called SiDiM, which Google translates to “secure documents by individual marking,” the changes are unique to each e-book sold. These alterations serve as a digital watermark that can be used to track books that have had any other DRM layers stripped out of them before being shared online. The researchers are hoping the new DRM feature will curb digital piracy by simply making consumers paranoid that they’ll be caught if they share an e-book illicitly.

Seems like I recall reading about this in Tom Clancy's Hunt for Red October when Jack Ryan used this technique to identify someone who was leaking secrets to the Russians. It would be so very difficult for someone to write a little program that, when stripping the DRM, randomized a couple of pieces of punctuation to break the hash that the vendor is storing along with the sales record of the individual book."

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Comment: Re:good (Score 3, Informative) 201

by Bruce Perens (#44046077) Attached to: MySQL Man Pages Silently Relicensed Away From GPL

If they own the copyright, they are free to relicense a piece of data

Sorry to be pedantic, but replace "a piece of data" with "a work of authorship". If there isn't the creative work of a human being involved, it's not copyrightable. And then we get to this:

17 CFR 102(b) In no case does copyright protection for an original work of authorship extend to any idea, procedure, process, system, method of operation, concept, principle, or discovery, regardless of the form in which it is described, explained, illustrated, or embodied in such work.

And that means that even when the hand of man is involved, a lot of things are still not copyrightable.

Comment: Re:The Efficient Market Hypothesis (Score 1) 429

by the eric conspiracy (#44045447) Attached to: Have We Hit Peak HFT?

> Therefore, markets are all inefficient _on all timeframes_.

You obviously have no idea what you are talking about.

The efficient market hypothesis is perhaps the most studied financial analysis of equity markets ever done.

A LOT of important work, like Black-Scholes is based on it.

The fact that markets are efficient cause exactly the opposite of what you claim. Since all public information is already accounted in the price, successful trading becomes very difficult, and success relies either on use of non-public information or random chance.

The prime originator of it is University of Chicago Professor Fama who was the first recipient of three major prizes for research in Finance; the 2005 Deutsche Bank Prize in Financial Economics, the 2007 Morgan Stanley American Finance Association Award for Excellence in Finance, and the 2009 Onassis Prize in Finance. His other awards include the 1982 Belgian National Science Prize (Chaire Francqui), and the 2006 Nicholas Molodovsky Award from the CFA Institute for his work in portfolio theory and asset pricing.

He's been nominated for the Nobel Memorial in economics several times. There is little doubt he will eventually win it.

Comment: They're making friends like nobody's business! (Score 3, Interesting) 201

by Bruce Perens (#44045215) Attached to: MySQL Man Pages Silently Relicensed Away From GPL

Let's look at what Oracle is doing. I'll start the list of moves that appear to be intended to alienate the community around the very software they're promoting and cause the Open Source community to create viable forks that end up absconding with the product and its market. You guys contribute additional examples...

  • Oracle v. Google regarding Java and the premise that APIs are copyrightable.
  • Apache OpenOffice v. LibreOffice (which has a full-time negative publicity generator in Rob Weir).
  • MySQL v. MariaDB.

IBM isn't known for dumb moves, but partnering with Oracle on this sure is one.

Bruce

"We are on the verge: Today our program proved Fermat's next-to-last theorem." -- Epigrams in Programming, ACM SIGPLAN Sept. 1982

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