why does he do that pdf What You Know About Why Does He Do That Pdf And What You Don’t Know About Why Does He Do That Pdf
Sometimes, a government bureau will column a PDF that doesn’t accommodate searchable text. Most often, it’s a browse of a printout. Why? Don’t the NSA, the Department of Justice, etc., apperceive how to catechumen Word (or whatever) anon to PDF? It turns out that they apperceive added than some of their critics do. The reason? With a allotment of paper, you apperceive abundant added about what you’re absolutely disclosing.
It may be accessible to band all of the metadata safely. The NSA, in fact, has a adviser on how to do it. (N.B. You’ll get a affidavit error: abounding US government agencies accept certificates from a US government-specific affidavit authority, and alfresco browsers do not affirmation it by default. If you do not appetite to bang through the admonishing letters (if you alike can), I’ve created a mirror of it. And that’s legal: by law, US government-created abstracts are in the accessible domain.) But the complication is awkward — and the account of things that “Sanitize Document” can annul (page 10) is absolutely amazing. (Sanitizing Word is harder.)
So why is this an issue? Well, bodies still get it wrong. And it’s not a new problem; Bruce Schneier wrote about it years ago and said it was almost contemporary then. Even, yes, Federal prosecutors can get it wrong.
Printing things assimilate cardboard and scanning it is animal and not as functional, but it does anticipate this array of error.
And there are two added attenuate points. First, acute networks are generally air-gapped from the Internet. Air-gapping — accepting no concrete affiliation whatsoever to the alfresco apple — is a able defense, admitting far from perfect. Getting a PDF book from an air-gapped arrangement to the Internet can be done, but it’s assiduous and — if done afield — can betrayal the acute arrangement to advance from the outside. Again, we apperceive how to do this — chase NSA procedures on the acute network, bake a CD-R (not a CD-RW) with aloof the PDF, and backpack that to an alfresco apparatus — but there’s still the adventitious for animal error. And there’s one added threat…
What is absolutely in a PDF, and how do you know? Is it aloof what you see on the screen? Alike afar from acerbity or stupidity, e.g., ambience the chantry blush to white, there’s a hidden danger: what did the PDF conception or afterlight affairs absolutely address out? Remember that PDFs are containers; there can be nominally abandoned sections of the file. What fills those bytes? How do you know, and what is your assurance?
Abounding years ago, while I was at AT&T, I was alive on an important centralized project. Addition beatific out a Word affidavit with some actual acute details. Unlike anybody abroad on the project, I was active an accessible antecedent OS instead of Windows, so I couldn’t aloof blaze up Word. Instead, I acclimated an accessible antecedent apparatus to appearance the book — and I saw article different. The being who created the book had two abstracts accessible in Word, and what was nominally abandoned amplitude was abounding with whatever debris was lying about RAM at the time: in this case the anatomy of an different letter he was sending to addition alfresco the company. The apparatus I acclimated to appearance the book wasn’t perfect, so it printed the amiss allotment of the Word document. The allowance are high, of course, that the almsman of that letter accustomed some of our activity plans, but if that being did the accepted — run Windows and Word — it would never appear, and our accumulated secrets would be safe.
The NSA and the Department of Justice, of course, accept austere adversaries, ones who won’t booty a book at face value. Unless you accept a lot of aplomb in the PDF afterlight program, you’re abundant bigger off scanning a printed version. Sure, there are still some risks, e.g., steganography based on kerning or the like, but they’re abundant beneath than with a PDF.
So: DoJ has its affidavit for sending out these difficult-to-use PDFs. You may not like it — I don’t like it — but they’re accomplishing it out of caution, not benightedness or stupidity.
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