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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.

14 of 152 comments (clear)

  1. Best example of how to speak about Security by StaticEngine · · Score: 4, Informative

    As a computer person, I don't consider myself a great conversationalist. And I agree that I've already thought about a lot of the issues Schneier brings up in "Beyond Fear."

    However, most "normal people" relate well to anecdotes, and general examples, and this book is full of them. Instead of trying to describe how 256 bit keys are safer than 64 bit keys to non-technical friends and relatives, I've learned lots of metahphors involving door locks, car theft, and every day risk assesment that will help me to get my point across a lot more clearly.

    I think this is the point of this book. It's not technical. It's Security for the Everyman.

    1. 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.
  2. 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.

    1. Re:Process vs Organized Security by Slarty · · Score: 4, Interesting

      Airport security just doesn't work very well anyway, even now, after 9/11, when it's supposedly all beefed up.

      My freaky experience: I took a trip to Florida, and in my carryon luggage (a backpack) was a buck knife with a 4-inch serrated-edge blade. I wasn't trying to smuggle it through on purpose... the last time I had used the backpack was on a camping trip (where knives are handy) and I simply hadn't unpacked the front zipper pocket, where the knife was.

      Anyway, the knife made it cleanly through airport security. Twice. At two different "high-security" airports... and yes, it went through all the detectors and everything. I didn't even find the damned thing until I was on my last connecting flight. So yes, there are some major issues there.

      To tie this back in with your post... I hate to generalize based on one incident, but the extra security just ain't giving us a whole lot of extra security. Which leads me to believe that you're right... one of the main "benefits" of all this was just to allow the authorities to take actions "in the name of security" that only serve to give them more power.

      What that experience taught me is that I can't rely on those in authority to protect me, either me physically or my data or anything like that. Which means that citizens are going to have to start safeguarding themselves, and sometimes that may be in opposition to the "best interests" of the state. Which sure as heck don't seem to be our best interests much these days.

      --
      Hi... I'm Larry... the shivering chipmunk... brrrrr!... I'm cold... I need a sweater...
  3. 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 Jeffrey+Baker · · Score: 5, Interesting

      It's really symptomatic of something else: American's don't trust their government. Over the last century the government and laws of the USA have really gotten out of control, but the population has mostly just let it slide. I mean it's illegal to smoke marijuana, but everyone does it anyway. It's illegal in many states to be involved in a blow job, or to arrange your furniture in a certain way, or to change the needle valves in your carburetor. All these laws are pretty stupid, but nobody really cares because they are unenforceable.

      In addition the people of the USA have a tradition of just being criminals. Practically anyone has a smuggler or a bootlegger or a bookie in their family tree somewhere. These things were illegal but not really dishonorable. And in the beginning days of the country, it was possible for someone to fuck up their lives in one area and simply start over further west. So we've gotten used to ignoring the laws and taking advantage of anonymity.

      The situation changes if the government suddenly becomes organized and informed. If the government has a good way to track who we are and what we are doing, all those things that are illegal will suddenly matter. So the reaction is to resist tracking and information programs. Of course, this is the incorrect reaction: what we should really be doing is reigning in our government and repealling stupid laws until we feel that we can trust it again. But that answer isn't as obvious.

      I'll end with a short example: last year I got on an SF MUNI streetcar at a station where the toll machines were broken. I paid my $1, but the machine didn't give me a ticket. No attendant was on duty so I just boarded the train anyway. Well, lo and behold here comes Fare Inspection Shitwit to check my ticket, which I didn't have, through no fault of my own. Inspector Shitwit gives me a ticket ($90 fine) for failure to have a ticket on the streetcar. Naturally I rebuked him profanely and threw the ticket in the trash. I don't have any intention of dealing with such rubbish. But now, six months later, there's a warrant for my arrest which will never be served by the SFPD and I will be unable to renew my driver's license, which is expired, until a year after the incident. If the government were *really* well organized I might even get arrested. I'm really afriad that in some well-organized, well-tracked future government regime, people will get in *real trouble* for not having a piece of paper that says you paid $1 to get on the bus.

    3. 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.
    4. Re:What's wrong with national IDs? by SquadBoy · · Score: 5, Interesting

      Becuase they do not buy any security and they open many holes.
      You may trust your government enough to know everything about you and to keep it all in one great big database but you have to keep in mind that here in America we don't so much. In fact we are an entire country founded on the thought that the government should get the fuck out of our lives. National IDs do nothing for security they do nothing to prevent idenitity theft they do nothing but put all of your personal info in one database that can be abused by those who have access to it and broken into and abused by those who do not. In Beyond Fear Bruce goes through this with the 5 step process. You spend a large amount of money and get nothing in return.

      Think about it for a moment and I can only speak for the US but I'll walk you through the process.

      I have a drivers license and a Social Security card. With those two forms of ID I can get any other form of ID that we have here in the US. Those two pieces of ID are in turn based on a birth cert. You can get a birth cert for a couple of hundred dollars. To implement a national ID they would have to figure out someway to figure out who everybody is and at this point it is impossible to prove who anyone is beyond accepting what their current IDs say. See the problem yet?

      So national IDs will just give you another ID that says that you are who you claim to be. But if I don't like being that person anymore it would take a couple of hundred dollars and a bit of time to be someone else. There is *no* way that you can prove that anyone is anyone. Trying to do so is pointless and will merely cause problems for honest folks.

      --

      Cypherpunks: Civil Liberty Through Complex Mathematics. Those who live by the sword die by the arrow.
  4. "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.
  5. 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.

  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. How to get your driver's license back by Anonymous Coward · · Score: 5, Funny

    Just renounce your US citizenship but remain in SF. That way you'll now be an illegal alien. Then just head on over to the DMV and they'll print your license out for you straight away.

  8. Re:there is a national ID system by AJWM · · Score: 3, Interesting

    And California is about to massively devalue that ID by issuing drivers licenses to undocumented (aka illegal) aliens.

    Logically, every other state in the union should refuse to recognize a CA drivers license as a valid ID, except maybe as proof of the ability to drive a car (about the same utility as the "international drivers license" you can get). I'm sure Californians will be real happy when TSA stops accepting their DLs as valid ID next time they try to board a plane.

    You want a national ID? Get a passport.

    --
    -- Alastair