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81% of Tor Users Can Be De-anonymized By Analysing Router Information

dwheeler Anonymity is HARD (136 comments)

I'm not surprised. I wrote a paper back in 2003, Techniques for Cyber Attack Attribution, that listed a LONG list of ways to do attribution. This sounds a like a variant combining "modify transmitted messages" and "matching streams" via timing (see the paper).

Real anonymity is HARD. If someone wants to attribute you, it's hard to prevent.

about two weeks ago
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Creationism Conference at Michigan State University Stirs Unease

dwheeler Re:We NEED more public discussions at universities (1007 comments)

noun: censorship: the practice of officially examining books, movies, etc., and suppressing unacceptable parts. So if MSU, a public university, officially examines and suppresses the speech of certain ideas, then (by definition) that is censorship. If MSU censors ideas because they receive a lot of grant money in opposition to the ideas, that is even worse. No one is asking for MSU to endorse these ideas, merely for space to present them to a willing audience. I agree that MSU should not be required to endorse every speech made on its campus, but that is not what is happening here.

I agree that you can't just do an emergency broadcast at the White House. But that is irrelevant. No one has to show up at their event, or listen to it. They're being allowed to present a point of view, and those who WISH to hear their point of view may listen to it. That's nothing like an emergency broadcast.

The university sees this as a free speech issue too. The article says: "University officials say they have no plans to interfere with the event. “Free speech is at the heart of academic freedom and is something we take very seriously,” said Kent Cassella, MSU’s associate vice president for communications, in a statement. “Any group, regardless of viewpoint, has the right to assemble in public areas of campus or petition for space to host an event so long as it does not engage in disorderly conduct or violate rules. While MSU is not a sponsor of the creation summit, MSU is a marketplace of free ideas.”

about a month ago
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Creationism Conference at Michigan State University Stirs Unease

dwheeler The interview question (1007 comments)

No. If the prevent the presentation, an interviewer might ask, "Oh, you went to that pro-censorship university?"

about a month ago
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Creationism Conference at Michigan State University Stirs Unease

dwheeler Disagree (1007 comments)

I disagree. There may not be any discussion in that room, at that time. But that does not prevent discussion, which will continue in many venues. I suspect there will be many other presentations, where opposing points of view will be aired. Debating over valid sources of evidence is nothing new, either.

Preventing the airing of unpopular ideas is its own problem.

about a month ago
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Creationism Conference at Michigan State University Stirs Unease

dwheeler We NEED more public discussions at universities (1007 comments)

I am saddened by these sudden cries for censorship. I should note that I believe in evolution. I believe that most Christians do, too; for example, the Catholic church in the 1950 stated that there was "no intrinsic conflict between Christianity and the theory of evolution". But if someone has a belief that is different from the mainstream, let them present it. If it's convincing, others will believe if. If it's not convincing, they will convince no one else.

about a month ago
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Rite Aid and CVS Block Apple Pay and Google Wallet

dwheeler Patents and standards (558 comments)

There are absolutely no laws that keep standards (or anyone else) safe from patent claims.

Some standards organizations try to require members to license patents under "Reasonable and Non-discriminatory" terms, but the whole thing is nonsense. What is "reasonable"? The answer is, "as much as I can get from you!". And what is non-discrimantory? By definition most RAND terms discriminate against FLOSS, and they also always discriminate against organizations without the patents (since they have to pay for the patents, while others do not). In addition, for software patents and business patents, in general no one (not even the patent author) actually knows what the patent covers and what it does not, for a variety of unfortunate reasons.

I actually think that patents have their place in the physical world, but not at all in the software world.

about a month ago
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India Successfully Launches Region-Specific Navigation Satellite

dwheeler Re: How many GPS systems are there? (86 comments)

I know of at least the following systems that exist or are being built: GPS (United States), GLONASS (Russia), Galileo (planned, European Union), Indian Regional Navigation Satellite System (India), and the Beidou Navigation Satellite System (China). GPS and GLONASS, in particular, have been around a long time.

about a month ago
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Ask Slashdot: How Many Employees Does Microsoft Really Need?

dwheeler Binary prefixes: Use them (272 comments)

By standard and by law, a "k" is x1000, an "M" is x1,000,000, and so on, and NOTHING else. Standards groups like IEC and IEEE are unanimous: they ALWAYS mean a power of 10. There have already been a number of court cases where someone used "K" etc. to mean binary prefixes, and every time they have had to concede (and typically end up paying up in out-of-court settlements). Examples include Willem Vroegh v. Eastman Kodak Company and Cho v. Seagate Technology (US) Holdings, Inc.

And don't tell me that computers "always" use base 2 measurements. Hard disk drives, clock cycles, and bandwidth are typically measured using base-10 prefixes (multipliers of 10^3). Yes, RAM has been traditionally been measured using prefixes that imply powers of 2, but the errors have been getting worse and worse as the numbers get larger.

Technologists should care about being precise. If you can't tell what a number means, that is a problem. The binary prefixes are a nice solution to a widespread problem. If you don't care about precision, use whatever term you want. But when you want to measure accurately, use the right units.

about 4 months ago
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With New Horizons Spacecraft a Year Away, What We Know About Pluto

dwheeler What do you call objects orbiting stars? (128 comments)

The practical problem is a difficulty of communication. The purpose of words is to help us communicate. If we have no word for a common idea we want to express, then we usually create a new word or phrase.

Let's say we observe an object, with mass less than a star, that is orbiting a star other than our Sun. What, exactly, do you call it? Under the IAU rules, you cannot call it a planet, because we generally cannot know if it has cleared its orbit. The standard solution in English is to call it a "planet". But if we call it a planet, then we should use the same definition everywhere.

about 4 months ago
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With New Horizons Spacecraft a Year Away, What We Know About Pluto

dwheeler Pluto=planet, because there are other stars (128 comments)

As I commented years ago, the worst problem with the current IAU definition of "planet" is a practical one: we can't practically use it for objects orbiting other stars.

We are too far away to observe small objects around other stars, and I think we will always be able to detect larger objects but not smaller ones in many faraway orbits. So when we detect an object in another galaxy with the mass of Jupiter, and it’s orbiting a star, is it a planet? Well, under this current definition we don’t know if it’s a planet or not. Why? Because we may not be able to know what else is there in orbit. And that is a real problem. I think it’s clear that we will always be able to observe some larger objects without being able to detect the presence of smaller ones. If we can’t use the obvious word, then the definition is useless - so we need a better definition instead.

I think a much better definition of "planet" is "orbits a star, enough mass to become round". Yes, that means that Ceres and some Kuiper Belt objects become planets. That's a GOOD thing. A lot of people don't know of Ceres, yet that one object has about 1/3 of the ENTIRE mass of the asteroid belt.

Of course, none of this affects reality; this is merely a definition war. But clear terminology is important in any science.

about 4 months ago
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India's National Informatics Centre Forged Google SSL Certificates

dwheeler Internet Explorer IS vulnerable though (107 comments)

This is a big deal. If you use a browser on Windows that does NOT counter this, such as Internet Explorer, then you ARE vulnerable. I imagine Microsoft will come out with a special-purpose patch, but still, this is a pretty nasty issue.

Untrustworthy CAs have been a problem for a long time; we need mechanisms to address them. The terrible cert revocation system makes it even worse; you can't be sure that the certs are checked in many cases. Chrome's CRLSets are not the answer; they are not even the beginning of an answer. We need to fix the whole revocation system. Sadly, there hasn't been enough work or enough urgency on these problems; maybe this will light a fire under those efforts. I doubt it, but it's worth hoping.

about 5 months ago
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Qualcomm Takes Down 100+ GitHub Repositories With DMCA Notice

dwheeler Counter-notice! (349 comments)

Hopefully they will quickly submit a counter-notice.

about 5 months ago
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Judge Frees "Cannibal Cop" Who Shared His Fantasies Online

dwheeler Conspiracy != fantasy (185 comments)

The difference is that in a conspiracy someone plans to DO something unlawful, or cause someone else to do it... and not just talk about it. A "conspiracy" is "a secret plan by a group to do something unlawful or harmful". A fantasy is just the "activity of imagining things".

about 5 months ago
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WebODF: JavaScript Open Document Format Editor Deemed Stable

dwheeler Impressive start! (91 comments)

This is a really impressive start. It's not done, but they don't claim it is. It's responsive and does quite a bit.

about 5 months ago
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Exploiting Wildcards On Linux/Unix

dwheeler Old problem. Let's fix it. (215 comments)

I'm glad that people are learning about this problem. Sadly, it's not new, it's been known for decades. CERT’s “Secure Coding” item MSC09-C (Character Encoding — Use Subset of ASCII for Safety) specifically discusses the vulnerabilities due to filenames. The Common Weakness Enumeration (CWE) includes 3 weaknesses related to filenames (CWE 78, CWE 73, and CWE 116), all of which are in the 2009 CWE/SANS Top 25 Most Dangerous Programming Errors. My freely-available book on writing secure software has a whole section about filenames. And so on.

We need to fix the problems with Unix/Linux filenames, not just keep rediscovering them. In particular, ensuring that filenames had no control characters, no leading dashes, and used UTF-8 encoding would simplify developing correct programs. Most people writing software already follow these rules. We don't need to make it easy for attackers.

about 5 months ago
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7.1 Billion People, 7.1 Billion Mobile Phone Accounts Activated

dwheeler Re:Sanity check (197 comments)

To be fair, the article itself does state that the 7.1B figure does not represent unique users or handsets in use. Instead, it says that "The number of unique users is now 4.5 Billion or 63% of all humans alive are actually users of mobile phones. The remaining 2.6 Billion accounts are second or third accounts for the same user... So 20% of us, one in five who has a mobile subscription or account, actually walks around with two phones (and at least two accounts)."

about 6 months ago
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7.1 Billion People, 7.1 Billion Mobile Phone Accounts Activated

dwheeler Common situation: Work phone + personal phone (197 comments)

Lots of people I know have at least two phones. Heck, I personally have a "work phone" and a "personal phone". My company is a lot less worried about their data mixing with other stuff, especially when combined with additional sandboxing mechanisms like GOOD. It helps me, too. If some organizational data gets out, my employer can erase the phone without me worrying that they'll erase my stuff. Also, I'm a lot freer to install apps than I would be if my company controlled what could be installed on the device that also housed my company's data.

This isn't even unusual. Phones are small and cheap enough to have two. Software-based security mechanisms leak all the time; making things physically separate is far more effective if protecting data actually matters. Not everyone needs to do this, but it's fairly common when data confidentiality really matters.

about 6 months ago
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One Month Later: 300,000 Servers Remain Vulnerable To Heartbleed

dwheeler Need to find vulnerabilities earlier (60 comments)

OpenSSL was actually examined by a lot of tools, but they all missed Heartbleed. My article How to Prevent the next Heartbleed lists approaches that could have found it. We need to improve how we examine this software so problems like this don't happen again.

about 7 months ago
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How To Prevent the Next Heartbleed

dwheeler Preventable! (231 comments)

But that's the point, we can and should take measures to prevent it. Even if we never eliminate all vulnerabilities, we can prevent many more vulnerabilities than we currently do.

about 7 months ago

Submissions

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New DoD memo on Open Source Software

dwheeler dwheeler writes  |  more than 5 years ago

dwheeler (321049) writes "The U.S. Department of Defense (DoD) has just released "Clarifying Guidance Regarding Open Source Software (OSS)", a new official memo about OSS. This memo is important for anyone who works with the DoD (including contractors) on software and systems that include software, and may influence many other organizations as well. The DoD had released a memo back in 2003, but "misconceptions and misinterpretations... have hampered effective DoD use and development of OSS". The new memo tries to counter those misconceptions and misinterpretations, and is very positive about OSS. In particular, it lists a number of potential advantages of OSS, and recommends that in certain cases the DoD release software as OSS."
Link to Original Source

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