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Beyond Fear

pres (Preston Tollinger) writes "I picked up Beyond Fear: Thinking Sensibly About Security In an Uncertain World basically because it was by Bruce Schneier. I am sure most Slashdot readers know Schneier's name and his work. The problem is, this book probably isn't for you (but might be perfect for someone you know)." To find out what he means by that, read on for the rest of Tollinger's review, below. Beyond Fear: Thinking Sensibly About Security In an Uncertain World author Bruce Schneier pages 256 publisher Copernicus Books rating 7 reviewer Preston Tollinger ISBN 0387026207 summary A worthwhile introduction to real-world (not just computer) security, aimed at a literate but non-technical audience. The Book Beyond Fear is described very well by its subtitle: this book helps you think sensibly about security. Don't expect the highly technical material you have seen in Schneier's previous books, but rather the more accessible material, much like you might read in his monthly newsletter. That doesn't mean the book is breezy: In Schneier's wordy but well-written manner, he describes a five-step process to analyze any particular security system or practice. The process helps you make sure you understand what you are protecting, what the tradeoffs are, and whether, in the end if it is worthwhile to implement the system.

He then goes on to apply this method to a series of security issues while covering the various types of security and their weaknesses. For the most part this not a technical evaluation of the tools used, but rather an analysis for each example of what the security goals are and how the tools and technology achieve or fail to achieve those goals. Even more importantly, he deals with the tradeoffs inherent in any security system.

Schneier applies this method not only to the global issues that have come up since 9/11, from airline security to protecting government secrets, but also to personal issues, including tradeoffs in personal home security. By doing so, he takes principles which might be hard for some to understand in the abstract and makes it clear how they apply in situations almost everyone has thought about.

By drawing parallels, for instance, between how you might select a home alarm system to how you might evaluate the use of face recognition at the airport, Schneier shows that you don't have to be a security "expert" to think logically about security. He brings to the forefront the tradeoffs that you made in these personal choices; for example, the downside of dealing with deactivating an alarm system every time you come home. Then, in turn, he shows how you must consider the problem of people being falsely identified by the face recognition system at the airport.

Given this strong framework, he then uses his method to analytically and dispassionately tear apart most of the silly and stupid security methods (note my dispassion here) that have been put in place or considered in the past few years, from airline security methods to national ID cards. With a combination of funny yet pointed anecdotes, clear statistics and the occasional Harry Potter reference, Schneier uses his talent for cogent, rational explanation to show how people can think about security in the modern world, instead of simply panicking at every ominous news report.

To Read Or Not To Read So it sounds like a good book and probably would be for some, but there was not enough new content for me to make it worth my limited reading time. Perhaps due to my general interest in security or just because waiting in line at the airport has already given me a lot of time to think, but I have already considered most of the ideas Schneier raises in Beyond Fear. I own a shredder, but not an alarm system, because I have considered the risks and costs. I dislike the idea of a National ID card because I was already afraid of what someone might do who got access to it, and already monitor my credit report. I have written my local representative that while his recent bill to remove SSNs from insurance cards is nice, it's far too late (and how about just getting people to stop using SSN's as passwords?).

If this describes you, skip the book. However you might note above I didn't say this was a waste of my money. This book is soon going to find its way into hands of friends and relations who need to think about security. It is a great introduction to a way of thinking that is critical in a post-9/11 world. It should be required reading for members of Congress before any more security laws are passed based only on the need to do something instead of rational thought.

Summary If you think consciously about security, know who Schneier is, or have ever noticed (and complained) that many airport security measures make no sense, you probably don't need this book. If you have only considered this topic in general, though, and want a book to focus your thoughts, Beyond Fear will do that. Finally, if you have friends who don't yet think this way (admit it, we all do), get this book into their hands.

You can purchase Beyond Fear from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

13 of 152 comments (clear)

  1. Process vs Organized Security by Schmucky+The+Cat · · Score: 4, Insightful
    This piques me. I'd love a process that evaluates proposed security processes. Every place I have ever been, but especially workplaces, have had some sort of "Security" organization. In all cases the goal of that organization has just been to make up insane new practices or arbitrary restrictions that serve to enhance the power of the security organization.

    This came true on a national scale with 9/11 of course. The public went whole hog for the idea of airport screeners but those airport screeners have the brains of a mall security guard.

    I'd love to see a simple process for evaluating new proposed 'security' practices in my organization to help debunk the idea that these proposals provide any security at all.

  2. What's wrong with national IDs? by hanssprudel · · Score: 4, Insightful

    I don't understand why Americans are so afraid of national ID cards. Where I live we have standardized national ID cards that are used in most situations, and I can't say how it has made me any less free.

    In the modern world, we are counted and registered with our government. What is wrong with having a standardized card to show who we are?

    I don't know if these cards would stop anybody from crashing airplanes, but they do help against things like identity theft, which is quite common in America but almost unheard of here. We don't have to have "three kinds of photo id" to go to bank, we don't consider our mother's maiden name or SS#'s security secrets, and we don't need to bring the electic bill to rent a movie.

    Granted, my country is much smaller than the US, but I would support having an EU wide Identity card standard. I cannot see sensible argument against it.

    1. Re:What's wrong with national IDs? by Otter · · Score: 3, Insightful
      I don't understand why Americans are so afraid of national ID cards. Where I live we have standardized national ID cards that are used in most situations, and I can't say how it has made me any less free.

      I think it's a combination of 1) people are used to what they're used to and when you accustomed to not having an Official State Identification Number there's unease about suddenly getting one and 2) many Americans, my own family included, fled here from countries where the government's concern with tracking you was less than entirely helpful.

      At the same time, there are obvious advantages to having a standard identity, which is why driver's licenses (state governments are trusted much more than the federal government) and social security numbers have taken on far more importance than they were ever intended to have. Essentially, the combination of the two already serves as an official identity.

      By the way, I have no idea of the relative rate of identity theft in the US and Europe, but it's certainly not "common" in any sense in which I'd use the word. If there's a significant difference, it's probably due to the fact that Europeans don't routinely have 15 different credit accounts.

    2. Re:What's wrong with national IDs? by abulafia · · Score: 3, Insightful
      I don't know if these cards would stop anybody from crashing airplanes, but they do help against things like identity theft, which is quite common in America but almost unheard of here. We don't have to have "three kinds of photo id" to go to bank, we don't consider our mother's maiden name or SS#'s security secrets, and we don't need to bring the electic bill to rent a movie.

      Most of what you cite is convenience. It may be convenient to have one card for everything, but that doesn't mean making it mandatory is a good idea. Identity theft can be stopped in other ways, and it isn't even clear to me that a national ID card would do much to stop it here at all.

      The US started differently than European nations, and has a long history of distrust of the government. I still believe this is a valuble thing.

      The only party getting value out of national ID cards is the government. Why should I quietly give that to them? I have no reason to.

      --
      I forget what 8 was for.
    3. Re:What's wrong with national IDs? by Matthew+Austern · · Score: 2, Insightful
      I don't understand why Americans are so afraid of national ID cards.

      Read the book. This is one of the cases that he analyzes. The questions to ask about national ID cards is the same as for any security measure: what assets are you trying to protect, what threats are you trying to protect against, how well does this measure work to reduce the risks from those threats, what new threats does it introduce, and so on.

      I can see ways in which a national ID card could be useful. I do not see that it could be useful as a security measure. I can see ways in which it could hurt security. (It could increase the risk of identity theft, for example, by creating a new database with security issues of its own.)

      But again: read the book. If I were to present a complete security analysis of national ID cards I'd just be ripping off Bruce Schneier anyway, so you'd be better off getting it from the original than from my summary.

  3. "Not for you"? by Skyshadow · · Score: 4, Insightful
    Key bit from the review:

    ...he describes a five-step process to analyze any particular security system or practice. The process helps you make sure you understand what you are protecting, what the tradeoffs are, and whether, in the end if it is worthwhile to implement the system.

    This might seem like common sense, but a IMO *lot* of otherwise Clueful people could use having this sort of process tatooed in reverse on their forehead so they'd have to review it every morning when they looked in the mirror.

    The trouble with any job that involves detail and careful attention is that the forest tends to duck behind all the damned trees, and this is especially true for IT. Hell, look at all the /.'ers in our recent discussions about programs or products that are "useless" or "should have waited longer to be released" because it doesn't provide absolute security, whereas in reality security is a *step by step* type of deal, not one of absolutes.

    Anyhow, in my experience it often benefits even the "experts" to have the blatently obvious spelled out in this way and laid out before them. Security isn't alone here -- this goes for just about all disciplines, IT or not. Given that, I think it's dangerous to dismiss something like this as too basic.

    --
    Every year during my review, I just pray the words "slashdot.org" aren't mentioned.
  4. Is he reading too much into people? by Anonymous Coward · · Score: 4, Insightful

    Fear is a strong word. I don't think getting an alarm system is evidence that you are cringing in fear, or even feeling fear. It may be a sensible step in a practical plan to simply be prepared. Obviously there are exceptions; some people truly are fearful, but I doubt most are.

    One mistake Schnier tends to make is to ascribe certain thoughts to others that may not be there at all. For example, he seems to think that anyone who has a security system of any kind (software, hardware, etc.) assumes that system will be invincible. He then goes on to attack that assumption, without stopping to realize that the assumption he is attacking is not one that is actually held by most people. Now his new attack, on "fear" this time (that he thinks everyone with security systems must have), is of the same form.

    However, over the years his all-or-nothing approach has mellowed, fortunately; since he is so influential, it's good that he is starting to see things less as black and white and more in terms of tradeoffs. The old view that poor security equals no security is easily debunked by pointing out that virtually all security systems in place everywhere are penetrable, yet they remain effective in the aggregate.

    Bottom line: Beyond Fear is just a good title. Let's hope he doesn't really think that locking your car door is firm evidence that you are quaking in your boots.

    1. Re:Is he reading too much into people? by Anonymous Coward · · Score: 2, Insightful

      One mistake Schnier tends to make is to ascribe certain thoughts to others that may not be there at all. For example, he seems to think that anyone who has a security system of any kind (software, hardware, etc.) assumes that system will be invincible. He then goes on to attack that assumption, without stopping to realize that the assumption he is attacking is not one that is actually held by most people.

      Schnier has spent years in the fields of Crypto and security. He's seen a lot of people who have exactly that expectation of a security system, at least in computers. He himself used to believe it was possible, his previous book was written when he realized it wasn't. He was somewhat depressed by the realization. Now he's moveing on. Yeah, he is probably guilty some of projection, understandably, but a lot of people are standing right where he's aiming.

      Most people understand that physical security is not absolute, but this understanding doesn't transfer over to computing.

  5. Re:Best example of how to speak about Security by Skyshadow · · Score: 3, Insightful
    The trouble with that is the tendancy to run into serious "metaphor sheer" when using an example you're making up on the fly...

    Here's a book idea: Come up with metaphors for computer-related ideas which will stand up reasonably well even as the user/cluebie/PHB makes assumptions based on them. I'd buy two compies, one for work and one for home, and keep 'em right next to the phone. I can't tell you how often it'd be useful...

    --
    Every year during my review, I just pray the words "slashdot.org" aren't mentioned.
  6. Re:Crypto by CGP314 · · Score: 4, Insightful

    This is precisely why I don't bother with any encryption that isn't built in. Browser encryption - fine. Using PGP or RMSPG on my email -- as Dogbert asked, "Who would want to read your mail?" There is too much hassle involved, just on my end, never mind getting my sister or mother in law to read encrypted email. Unless you make a fetish of it for your own sake or you're sending something genuinely worth protecting, who cares?

    Well, the idea is if you only send important email in encrypted form, then the important email is easy to spot and brute force. But if you encrypt everything, then brute force is not such a viable option.

    That's the idea anyway, but I'm with you. I tried to use PGP for a while, but none of the people I emailed had any idea what it was, and didn't have the inclination to learn.

  7. The administration doesn't want you to read this by Animats · · Score: 2, Insightful
    This might lead people to realize that the US has overreacted to Al-Queda, Iraq, and street crime, while underreacting to Enron, SARS, and North Korea.

    For US government regulatory purposes, the value of a human life ranges from about $1.1 million to about $6 million. (1999 dollars). The current administration would prefer smaller numbers, because environmental and safety regulations are measured against those values. (1 CFR s305-88-7). So the Enron collapse, at $40 billion, equates to about 7,000 lives.

    Yet Ken Lay is still at large.

  8. We NEED to use SSN's as identifiers by bill_mcgonigle · · Score: 2, Insightful

    I have written my local representative that while his recent bill to remove SSNs from insurance cards is nice, it's far too late (and how about just getting people to stop using SSN's as identifiers?

    The cat's out of the bag already. Pretending that SSN's are somehow secret was dubious enough thirty years ago, but is just plain reckless today. It's this coy game of 'if you know your SSN you must be you even though we know that's not true' that has allowed identify theft to proliferate.

    Instead we need to just say, "this is my National ID # - use it for whatever you damn well please" - at that point people will have to start looking for real security solutions instead of the crazy half-baked ineffective one they're trifling with now.

    Of course, this can't be done electively - there needs to be a national cutover date with probably 2 years notice (then at least 2 years of delays). All that needs to be done is to get Congress, the IRS, the President, and 'Privacy Advocates' on board. No problem.

    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  9. Re:A better lifestyle... by ScrewMaster · · Score: 2, Insightful

    This goes back to a smug, complacent nation that has not, for over two hundred years, had to deal with the daily brutality experienced by people in the majority of other nations. By simple numbers the normal state of humanity, worldwide and throughout its entire history, is one of abject misery. We've always felt ourselves a protected class, here in the United States, and thanks to the good work of our Founding Fathers and a couple centuries of isolationism we pretty much were. Then we got involved in world affairs and we aren't as "safe" anymore.

    But ... so what. There really isn't a whole lot you, me, or the rest of the population can do about terrorists. Worrying about it and losing sleep is utterly counterproductive. Worry about the bald tires on your car or those squeaky brakes: those are much more credible and immediate threats.

    To continue the analogy, when I'm a passenger in a car, I try to be alert and watch what's happening around me because there is a real possibility that I could do something to avoid an accident. Conversely, when flying on a jetliner, I typically take a nap. Why is that? Because, while there is still a finite risk of sudden death, if that plane decides to prematurely stop flying and bury itself in a mountainside I'm toast whether I'm wide awake or out cold. So, I simply don't concern myself about negative outcomes and doze off or read a book.

    It is important to focus our worries and concerns in areas where they will actually do some good. Unfortunately, I don't see that happening. Since 9/11 I have heard numerous public officials make statements like "We have to make people feel secure so they'll go back to work." Notice they never say they'll actually make us more secure, they just want us to feel more secure so we'll get on with our lives and so the economy won't plummet again. It's a national con job that has taken in a lot of people, but I can't even say that they're wrong in doing it. People were freaking out about the attacks and something needed to be done, I guess.

    Compare what our lives, even now after 9/11, to what the Israelis and Palestinians suffer each and every day of their lives. The possibility of sudden death at an enemy's hand, of being blown into very small pieces while eating one's lunch, is very real and very much a part of their daily routine. We are still terrified about something that happened a couple of years ago. Yes, it is pathetic. Get out and live your life, that's what I say.

    --
    The higher the technology, the sharper that two-edged sword.