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July CRYPTO-GRAM newsletter

From:  Bruce Schneier <schneier-AT-counterpane.com>
To:  crypto-gram-AT-chaparraltree.com
Subject:  CRYPTO-GRAM, July 15, 2004
Date:  Thu, 15 Jul 2004 05:46:08 -0500

                  CRYPTO-GRAM

                 July 15, 2004

               by Bruce Schneier
                Founder and CTO
       Counterpane Internet Security, Inc.
            schneier@counterpane.com
            <http://www.schneier.com>
           <http://www.counterpane.com>


A free monthly newsletter providing summaries, analyses, insights, and 
commentaries on security: computer and otherwise.

Back issues are available at 
<http://www.schneier.com/crypto-gram.html>.  To subscribe, visit 
<http://www.schneier.com/crypto-gram.html> or send a blank message to 
crypto-gram-subscribe@chaparraltree.com.

Crypto-Gram also has an RSS feed at 
<http://www.schneier.com/crypto-gram-rss.xml>.


** *** ***** ******* *********** *************

In this issue:
      Due Process and Security
      Security Notes from All Over:  X-Ray Machines and
        Building Security
      Cryptographers and U.S. Immigration
      Crypto-Gram Reprints
      Security and Portable Storage Devices
      News
      Counterpane News
      Security Notes from All Over: Coca-Cola and the NSA
      The Doghouse:  ICS
      The CLEAR Act Does Not Help Fight Terror
      Comments from Readers


** *** ***** ******* *********** *************

              Due Process and Security



The U.S. Supreme Court recently decided the three legal challenges to 
the Bush administration's legal maneuverings against terrorism.  These 
cases have been endlessly debated on legal and civil liberties 
grounds.  They were decided, mostly but not entirely, in favor of 
presumption-of-innocence and due process.

But I want to talk about how important the decisions are to our 
nation's security.  Security is multifaceted; there are many threats 
from many different directions.  It includes the security of people 
against terrorism, and also the security of people against tyrannical 
government.

The three challenges are all similar, with slight variations.  In one 
case, the families of 12 Kuwaiti and two Australian men imprisoned in 
Guantanamo Bay argue that their detention is an illegal one under U.S. 
law.  In the other two cases, lawyers argue whether U.S. citizens -- 
one captured in the U.S. and the other in Afghanistan -- can be 
detained indefinitely without charge, trial, or access to an 
attorney.  In all these cases, the administration argues that these 
detentions are lawful, based on the current "war on terrorism."  The 
complainants argue that these people have rights under the U.S. 
Constitution, rights that cannot be stripped away.

There are some very broad security issues at work here.  The 
Constitution (which includes the Bill of Rights) was designed to ensure 
the security of people: American citizens and visitors.  Its 
limitations on governmental power are a security measure.  Its 
enshrinement of human rights is a security measure.  These measures 
were developed in response to colonial tyranny by Britain, and have 
been extended in response to abuses of power within our own 
country.  Laws mandating speedy trial by jury, laws prohibiting 
detention without charge, laws regulating police behavior -- these are 
all laws that make us more secure.  Without them, government and police 
power remains unchecked.

The case of Jose Padilla is a good illustration.  Arrested in Chicago 
in May 2002, he has never been charged with a crime.  John Ashcroft 
held a press conference accusing him of trying to build a "dirty bomb," 
but no court has ever seen any evidence to support this accusation.  If 
he's guilty, he deserves punishment; there's no doubt about that.  But 
the way to determine guilt or innocence is by a trial on a specific 
indictment (charge or accusation of a crime).  Without an indictment, 
there can be no trial, and the prisoner is held in limbo.

Surely none of us wants to live under a government with the right to 
arrest anyone at any time for any reason, and to hold that person 
indefinitely without trial.

The Bush administration has countered that it cannot try these people 
in public because that would compromise its methods and 
intelligence.  Our government has made this claim before, and 
invariably it turned out to be a red herring.  In 1985, retired Naval 
officer John Walker was caught spying for the Soviet Union; the 
evidence given by the National Security Agency was enough to convict 
him without giving away military secrets.  More recently, John Walker 
Lindh -- the "American Taliban" captured in Afghanistan -- was 
processed by the justice system, and received a 20-year prison 
sentence.  Even during World War II, German spies captured in the U.S. 
were given attorneys and tried in public court.

We need to carry on these principles of fair and open justice, both 
because it is the right thing to do and because it makes us all more 
secure.  The United States is admired throughout the world because of 
our freedoms and our liberties.  The very rights inherent in these 
Supreme Court cases are the rights that keep us all safe and 
secure.  The more our fight against terrorism is conducted within the 
confines of law, the more it gives consideration to the principles of 
fair and open trial, due process, and "innocent until proven guilty," 
the safer we all are.

Unchecked police and military power is a security threat -- just as 
important a threat as unchecked terrorism.  There is no reason to 
sacrifice the former to obtain the latter, and there are very good 
reasons not to.


A version of essay was published in the Minneapolis Star Tribune.
<http://www.startribune.com/stories/562/4843840.html>


** *** ***** ******* *********** *************

       Security Notes from All Over:
       X-Ray Machines and Building Security



The other week I visited the corporate headquarters of a large 
financial institution on Wall Street; let's call them FinCorp.  FinCorp 
had pretty elaborate building security.  Everyone -- employees and 
visitors -- had to have their bags X-rayed.

Seemed silly to me, but I played along.  There was a single guard 
watching the X-ray machine's monitor, and a line of people putting 
their bags onto the machine.  The people themselves weren't searched at 
all.  Even worse, no guard was watching the people.  So when I walked 
with everyone else in line and just didn't put my bag onto the machine, 
no one noticed.

It was all good fun, and I very much enjoyed describing this to 
FinCorp's VP of Corporate Security.  He explained to me that he got a 
$5 million rate reduction from his insurance company by installing that 
X-ray machine and having some dogs sniff around the building a couple 
of times a week.

I thought the building's security was a waste of money.  It was 
actually a source of corporate profit.

The point of this story is one that I've made in "Beyond Fear" and many 
other places: security decisions are often made for non-security 
reasons.  When you encounter a security risk that people worry about 
inordinately, a security countermeasure that doesn't counter the 
threat, or any security decision that makes no sense, you need to 
understand more of the context behind the decision.  What is the agenda 
of the person who made the decision?  What are the non-security 
considerations around the decision?  Security decisions make sense, as 
long as you understand them properly.


Much more about this can be found in "Beyond Fear":
<http://www.schneier.com/bf.html>


** *** ***** ******* *********** *************

       Cryptographers and U.S. Immigration



Seems like cryptographers are being questioned when they enter the U.S. 
these days.  Recently I received this (anonymous) comment:  "It seems 
that the U.S. State Department has a keen interest in foreign 
cryptographers: Yesterday I tried to renew my visa to the States, and 
after standing in line and getting fingerprinted, my interviewer, upon 
hearing that my company sells [a cryptography product], informed me 
that "due to new regulations," Washington needs to approve my visa 
application, and that to do so, they need to know exactly which 
companies I plan to visit in the States, points of contact, etc. 
etc.  Quite a change from my last visa application, for which I didn't 
even have to show up."

I'm curious if any of my foreign readers have similar stories.  There 
are international cryptography conferences held in the United States 
all the time.  It would be a shame if they lost much of their value 
because of visa regulations.


** *** ***** ******* *********** *************

              Crypto-Gram Reprints



Crypto-Gram is currently in its seventh year of publication.  Back 
issues cover a variety of security-related topics, and can all be found 
on <http://www.schneier.com/crypto-gram.html>.  These are a selection 
of articles that appeared in this calendar month in other years.

How to Fight:
<http://www.schneier.com/crypto-gram-0307.html#1>

Crying Wolf:
<http://www.schneier.com/crypto-gram-0307.html#8>

Embedded Control Systems and Security:
<http://www.schneier.com/crypto-gram-0207.html#1>

Phone Hacking: The Next Generation:
<http://www.schneier.com/crypto-gram-0107.html#1>

Monitoring First:
<http://www.schneier.com/crypto-gram-0107.html#5>

Full Disclosure and the CIA:
<http://www.schneier.com/crypto-gram-0007.html#1>

Security Risks of Unicode:
<http://www.schneier.com/crypto-gram-0007.html#9>

The Future of Crypto-Hacking:
<http://www.schneier.com/crypto-gram-9907.html#hacking>

Bungled SSL:
<http://www.schneier.com/crypto-gram-9907.html#doghouse>

Declassifying Skipjack:
<http://www.schneier.com/crypto-gram-9807.html#skip>


** *** ***** ******* *********** *************

     Security and Portable Storage Devices



I recently read a research report about the security threat from 
portable storage devices.  Pocket USB drives, MP3 players, portable 
FireWire drives, and the like are becoming larger, faster, and more 
common.  The research report suggests that companies go so far as to 
restrict the use of these devices.

I think this is kind of silly.  Yes, these devices can store a  lot of 
data.  But so can DVDs.  And CDs.  And before that, floppies held a lot 
of data.  (Data was smaller then.)  And don't forget paper.

There are two separate issues here: deliberate copying and stealing of 
information, and inadvertent copying and leaking.

Regarding the former, banning iPods and USB devices doesn't do 
any  good...because the thief will ignore the ban.  USB thumb drives 
are tiny.  What are you going to do, strip search everyone who goes in 
and out of the building?  The ban is a silly countermeasure that annoys 
all your innocent employees and doesn't faze the potentially guilty ones.

Regarding the latter, it may do some good but not enough to make it 
worthwhile.  Exactly how is my iPod going to accidentally download 
sensitive files, and then accidentally upload them somewhere 
insecure?  I use my USB thumb drive for file transfer because it's 
easier than a CD-R.  It's not magically more or less dangerous than a 
CD-R.

The report also talks about the risk of these devices accidentally 
introducing malicious code into the network.  This is a risk, sure, but 
it's also a risk to allow employees to plug laptops into the network, 
bring floppy disks from home, and do half a dozen other things.  The 
way to secure a network from these sorts of attacks is through 
ubiquitous antivirus software, not by trying to control what sorts of 
devices an employee can use.

I used to work for the U.S. Department of Defense, and every evening 
when I left work a guard searched the papers in my bag.  Back then, 
computers were still new and the real risk was papers marked 
"Confidential," "Secret," or worse.  Once in a while the guards would 
catch someone taking classified material out of the building, but it 
was never someone doing it maliciously.  (If it had been, he would have 
hid the papers better.)  It was someone who forgot.  Outside of a 
military environment, this sort of countermeasure just isn't worth 
it...and probably isn't for most military installations.

It's a big deal to have confidential information leave an 
organization's building, and it's been a big deal since long before 
computers.  In the end, you have to trust your employees.  If they want 
to steal information, or if they make mistakes, they'll do it 
regardless of your precautions.  You can change the mechanisms of those 
actions, but don't confuse changing mechanisms with making things safer.


<http://www.eweek.com/article2/0,1759,1621809,00.asp>
<http://www.computerworld.com/securitytopics/security/story/0%2C10801%2C 
94319%2C00.html> or <http://tinyurl.com/6k7o7>


** *** ***** ******* *********** *************

                      News



Artfully concealed items confiscated by TSA screeners:
<http://www.tsa.gov/public/display?theme=8&content=090005198009a3cf> or 
<http://tinyurl.com/4elm3>
Interesting, but also confusing.  Who were these people who tried to 
conceal knives and sneak them onto airplanes?  Were they hijackers, 
random loonies, or people trying to evade airport security because they 
didn't want to check baggage?  I think the motivations of the people 
makes a lot of difference.

An overview of steganography, from the point of view of computer forensics:
<http://www.garykessler.net/library/fsc_stego.html>

The Minneapolis-St. Paul International Airport is testing a new 
security system: travelers can bypass long security lines by subjecting 
themselves to advance security checks.  I'm curious to see how this 
system fares, but I am skeptical about its widespread adoption.  As a 
high-level frequent flyer, I can already bypass long lines at most 
airports by using special lanes.  First-class passengers get the same 
privileges.  But who else would use a system like this?  I can't figure 
out who it is targeted towards.
<http://www.boston.com/business/articles/2004/06/28/minn_airport_starts_ 
advance_security_checks> or <http://tinyurl.com/5z48t>
<http://www.cnn.com/2004/US/Midwest/06/28/airport.background.checks.ap/i 
ndex.html> or <http://tinyurl.com/2v8gu>
<http://www.startribune.com/stories/1631/4847379.html>
<http://www.startribune.com/stories/1576/4864503.html>

Analysis of the Voynich Manuscript:
<http://www.sciam.com/article.cfm?chanID=sa006&colID=1&articleID=0000E3A 
A-70E1-10CF-AD1983414B7F0000> or <http://tinyurl.com/2xung>

Popular back-door program has a back-door in it.
<http://www.securityfocus.com/news/8893>

Avoiding identity theft: a primer.
<http://www.securityfocus.com/news/8908>

Torture has been in the news since 9/11, most recently regarding the 
U.S. military's practices at the Abu Ghraib prison in Iraq.  Politics 
isn't my area of expertise, and I don't want to debate the politics of 
the scandal.  I don't even want to debate the moral issues: Is it moral 
to torture a bomber to find a hidden ticking bomb, is it moral to 
torture an innocent to get someone to defuse a ticking bomb, is it 
moral to torture N-1 people to save N lives?  What interests me more 
are the security implications of torture: How well does it work as a 
security countermeasure, and what are the trade-offs?  This is an 
excellent pair of essays about how ineffective torture really 
is.  Given that torture doesn't actually produce useful intelligence, 
why in the world are we spending so much good will on the world stage 
to do it?
<http://www.salon.com/opinion/feature/2004/06/18/torture_1/index.html> 
or <http://tinyurl.com/57668>
<http://www.salon.com/opinion/feature/2004/06/21/torture_algiers/index.h 
tml> or <http://tinyurl.com/4v29z>

Great talk by Cory Doctorow on digital rights management:
<http://craphound.com/msftdrm.txt>

It's still easy to fool fingerprint scanners:
<http://www.ep.liu.se/exjobb/isy/2004/3557/>

Good article about sloppy programming and security:
<http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=160>

CERT is advising people not to use Internet Explorer.  (Me, I'm a happy 
Opera user.)
<http://www.theregister.co.uk/2004/06/28/cert_ditch_explorer/>

Great article on the origins of an Internet hoax: the one about Bill 
Gates paying to track your e-mail.
<http://www.wired.com/wired/archive/12.07/hoax.html>

Seven habits of highly secure companies:
<http://www.itbusiness.ca/index.asp?theaction=61&lid=1&sid=56003>

Forget about the issues.  Who has the more secure website: Bush or Kerry?
<http://www.wired.com/news/infostructure/0,1377,64036,00.html>

Airport security put real explosives in a piece of luggage to test some 
bomb-sniffing dogs.  Problem #1: they lost track of the bag.  Problem 
#2: it was a real piece of luggage belonging to an unwitting passenger.
<http://www.alibi.com/editorial/section_display.php?di=2004-05-20&scn=ne 
ws#8167> or <http://tinyurl.com/6g4as>

The timeline for fixing a Mozilla security flaw.  It's amazing how 
quickly and competently it was handled:
<http://www.sacarny.com/blog/index.php?p=104>

Hacking for profit:
<http://www.computerworld.com/securitytopics/security/story/0,10801,9440 
7,00.html?nas=SEC-94407> or <http://tinyurl.com/4k46u>

FBI's Guide to Concealable Weapons:
<http://datacenter.ap.org/wdc/fbiweapons.pdf>

Report on the security of Canadian DOD networks:
<http://www.canada.com/national/nationalpost/news/story.html?id=d47120ad 
-92eb-40d0-a9c3-f47216966493> or <http://tinyurl.com/6uhlm>

Here's a great security attitude.  The article discusses a hole in 
Friendster that allows users to obtain information about who is looking 
at their online profiles.  "Notified of the security holes Moore and 
Chisholm exploit, Friendster rep Lisa Kopp insists, 'We have a policy 
that we are not being hacked.'  When I explain that, policy or no, they 
are being hacked, she says, 'Security isn't a priority for us.  We're 
mostly focused on making the site go faster.'"
<http://www.wired.com/wired/archive/12.06/dating_pr.html>


** *** ***** ******* *********** *************

                Counterpane News



Counterpane has a new white paper on how monitoring helps with 
compliance.  As more and more companies fall under the perview of 
Sarbanes-Oxley, Gramm-Leach-Bliley, HIPAA, etc., complaince will become 
more important to security
<http://www.counterpane.com/compliance.html>

And we have another paper about our Enterprise Protection Suite, our 
comprehensive security service package.  Centered around monitoring, 
EPS is a way for companies to get their networks secure -- fast.
<http://www.counterpane.com/overview.html>


** *** ***** ******* *********** *************

      Security Notes from All Over: Coca-Cola and the NSA



Coca-Cola has a new contest.  Hidden inside 100 cans of Coke there's a 
SIM card, GPS transmitter, and a microphone.  The winners activate the 
Coke can by pressing a button, which will call a central monitoring 
facility.  Then Coke tracks the winners down using the GPS transmitter 
and surprises them with their prize.

NSA engineers drink Coke.  Lots and lots of Coke.  The possibility that 
an active microphone in a Coke can could be in one of the NSA's highly 
secure facilities is worth considering.  A reasonable threat analysis 
might look like this: "You know, the chances that one of these 100 cans 
out of hundreds of millions of cans ends up in our building is 
extremely small -- somewhere around 1 in 100,000 -- so it's not worth 
worrying about."

But the NSA's Information Staff Security Office) decreed 
differently:  "It is important that ALL cans of Coca-Cola within our 
spaces be inspected.  This includes cans already in our buildings and 
those being delivered on a daily basis.  If you discover one of these 
cans, DO NOT activate it.  Instead, you should alert your ISSO 
immediately and report the incident."

This is hysterical.  Can you imagine inspecting every can of Coke 
entering the NSA, opening each of the hundreds of cases of Coke and 
inspecting every can for a GPS transmitter?  What does this cost?  What 
is the NSA not doing because they're doing this instead?

Of course the engineers at NSA are already starting to create Coke cans 
with antennas, circuit boards, and keypads.  They are leaving them 
around snack messes as practical jokes.

And where's Pepsi in all of this?  Shouldn't they be advertising 
"surveillance-free cola"?

Funny stuff, but there's a serious point here.  Again and again, 
security decisions are clouded by agenda.  The NSA's Coca-Cola 
inspection policy is an example of CYA.  Some executive within NSA 
didn't want to be personally responsible for a GPS receiver slipping 
through security, so he decided that everything should be 
inspected.  It's a small risk to the greater population, but it's a 
larger risk to him.  His agenda is different from that of society's, 
but because his agenda matters more to him and it's his decision, his 
is what gets followed.

We as a society need to figure out how to make security trade-off 
decisions another way.  Having specific individuals or corporations 
make security trade-offs for us based on their agenda isn't making us 
more secure, and it's costing us a whole lot of money.


<http://www.wired.com/news/technology/0,1282,64078,00.html>


** *** ***** ******* *********** *************

                 The Doghouse:  ICS



ICS of Atlanta has developed the "Tree" cryptographic algorithm.

How is Tree different?  Well, for one thing, it "uses no math."  I'm 
not quite sure how that's possible on a computer, but that's what 
Tree's creator claims.  From an e-mail exchange: "...99.99% of the 
people out there use math to encode and they use math to 'break' the 
code.  Since we don't really use math, it would be quite hard to break."

Not only do they not use math, they don't have a key.  "Tree does not 
use a 'key'....  I just put in text, hit 'encode' and poof, there is 
the encoded message, to decode, I put in coded messages, hit 'decode' 
and poof, done.  That's it.  No key."

Amazing.

How do they demonstrate Tree's security?  "Over 100 professionals in 
mathematics & in computer science at Massachusetts Institute of 
Technology & at Georgia Tech, had sample encoded messages submitted to 
them. Not a single person could break this code!"  Think about 
it.  These guys sent unsolicited e-mails containing some ciphertext to 
over 100 professionals, and not one of them decrypted the 
messages.  Anyone have any other explanations for this behavior, other 
than the possibility that these 100 professionals immediately dropped 
what they were doing and spent fruitless weeks trying in vain to break 
Tree?

And if all that isn't enough to make you run screaming from these guys, 
their website proudly proclaims: "Tree Encoded Files Can Be 'Zipped.'"

That's right; their encryption is so lousy that the ciphertext doesn't 
even look random.


<http://icsatlanta.netfirms.com/>


** *** ***** ******* *********** *************

    The CLEAR Act Does Not Help Fight Terror



Danny Sigui lived in Rhode Island.  After witnessing a murder, he 
called 911 and became a key witness in the trial.  In the process, he 
unwittingly alerted officials of his immigration status.  He was 
arrested, jailed, and eventually deported.

In a misguided effort to combat terrorism, some members of Congress 
want to use the National Crime Information Center (NCIC) database to 
enforce federal civil immigration laws.  The idea is that state and 
local police officers, who check NCIC in routine situations, will be 
able to assist the federal government in enforcing our nation's 
immigration laws.  There are a limited number of immigration agents at 
the Department of Homeland Security, so asking the 650,000 state, 
local, and tribal police officers to help would be a significant "force 
multiplier."

The problem is that this idea, currently a pair of legislations in 
draft called the CLEAR Act and the Homeland Security Enhancement Act 
(HSEA), aren't going to help fight terrorism.  Even worse, this will 
put an unfunded financial burden on local police forces, and is likely 
to make us all less safe in the long run.

Security is a trade-off.  It's not enough to ask: "Will increased 
verification of immigration status make it less likely that terrorists 
remain in our country?"  We have to ask: "Given the police resources we 
have, is this the smartest way to deploy them?"

The CLEAR Act and HSEA will certainly result in more people being 
arrested for immigration violations, but will probably have zero effect 
on terrorism.  Some of the 9/11 terrorists were in the country 
legally.  Others were easily able to keep their heads down.  It's not 
as if terrorists are waiting to be arrested, if only the police have 
sufficient information about their immigration status.  It's a nice 
theory, but it's just not true.

And none of this comes cheaply.  The cost of adding this information to 
criminal databases easily runs into the tens of millions of 
dollars.  The cost to the local police forces of enforcing these 
immigration laws is likely to be at least ten times that.  And this 
cost will have to be borne by the community, either through extra taxes 
or by siphoning police from other duties.  I can't think of a single 
community where the local police are sitting around idly, looking for 
something else to do.  Forcing them to become immigration officers 
means less manpower to investigate other crimes.  And this makes us all 
less safe.

Terrorists represent only a very small minority of any culture.  One of 
the most important things that a good police force does is maintain 
good ties with the local community.  If you knew that every time you 
contacted the police, your records would be checked for unpaid parking 
tickets, overdue library fines, and other non-criminal violations, how 
would feel about policemen?  It's far more important that people feel 
confident, and safe, when calling the police.

When a Muslim immigrant notices something fishy going on next door, we 
want him to call the police.  We don't want him to fear that the police 
might deport him or his family.  We don't want him hiding if the police 
come to ask questions.  We want him, and the community, on our side.

By turning police officers into immigration agents, the CLEAR Act and 
HSEA will discourage the next Danny Sigui from coming forward to report 
crimes or suspicious activities.  This will harm national security far 
more than any security benefits received from catching non-criminal 
immigration violations.  Add to that the costs of having policemen 
chasing immigration violators rather than responding to real crimes, 
and you've got a really bad security trade-off.


This essay was originally published on CNet:
<http://news.com.com/CLEARly+muddying+the+fight+against+terror/2010-7348 
_3-5236260.html> or <http://tinyurl.com/2yb9x>


** *** ***** ******* *********** *************

              Comments from Readers



From: Anonymous
Subject: Witty

You said:  "Witty was speedily written.  Security company eEye 
discovered the vulnerability in ISS's BlackICE/RealSecure products on 
March 8, and ISS released a patched version on March 9.  eEye published 
a high-level description of the vulnerability on March 18.  On the 
evening of March 19, about 36 hours after eEye's public disclosure, the 
Witty worm was released into the wild."

We updated our BlackIce on March 17th (Wed) and subsequently checked 
from inside the updated version that no further updates were available 
(also on Wed). On 20th (Sat) Witty arrived and the computer in question 
was destroyed.

The most noticeable thing about this to me is the spin ISS put out to 
suggest it wasn't a big problem. Patch available a week in advance -- 
no way (and yes, I do have a valid support contract). I'd have 
preferred it if they put more effort into telling people about the fix 
than revising history later; unfortunately, the latter is probably more 
cost-effective for new and unaffected customers, and the others are 
perhaps "lost" anyway.

It took me half a day to remake the computer and a few things were 
lost, but nothing of great importance.  Where this trend in destructive 
viruses really alarms me is with home users who keep "prized" 
possessions on their computers, such as un-backed-up digital photos of 
important events. Destroying this kind of data is a nasty crime in my 
book. (Plus in a world where computers are increasingly seen as 
appliances, the number of opportunities for this sort of damage will 
only increase.)

I hope Witty will actually improve things, by showing vendors of 
"protection" products that flaws in them are particularly critical, and 
if they don't behave in an exemplary manner it will hurt them in the 
wallet as they lose customers they won't be getting back. I think this 
is the only process likely to help with Witty-alikes. Unfortunately, as 
in politics, I suspect many firms will still feel it's cheaper to 
invest in PR after the event than better behavior before.  Here's 
hoping I'm wrong.



From: Mart van de Wege <mvdwege@myrealbox.com>
Subject: One-time codes for electronic banking

I spotted this little bit in your June Crypto-Gram:  "For additional 
security, she then pulls out a card that has 50 scratch-off 
codes.  Jubran uses the codes, one by one, each time she logs on or 
performs a transaction.  Her bank, Nordea PLC, automatically sends a 
new card when she's about to run out."

I get a feeling that Wired is a bit behind in its coverage. This system 
has been in use by the Dutch bank Postbank for several years already.

Its Girotel system works by first requiring a user login with a 
so-called GIN (Gebruikers Identificatie Nummer, translated User 
Identification Number). After that Girotel requires all transactions to 
be confirmed with a Transaction Authentication Number (TAN). These TAN 
codes are supplied as a list on paper to the client, and are 
replenished as soon as the client has only a limited number left (I 
believe the threshold is 10, but I'm not sure).

This system has been functioning for at least 10 years to this date, to 
the great satisfaction of both the bank and the users. Its 
platform-neutral nature has allowed Postbank to upgrade its software 
from a standalone client that would dial-in directly to an online 
version, with no change in the interface, and no compromise to security.



From: "Bryan L. Fordham" <bfordham@socialistsushi.com>
Subject: National ID cards

People in Europe said "I've had the national ID card for X number of 
years, and I only had to show it once to police. Otherwise I use it to 
vote, buy drinks, etc."

This seems to strengthen the argument against such IDs, not hurt 
it.  If you only had to show it once it's not terribly useful; how does 
it help security?  And second, my driver license already allows me to 
show my age and prove I'm me when I go to vote. Why do we need another 
card?



From: "Steven Shaer" <steve@shaer.com>
Subject: Iranian whatever....

Regarding your article on the Iranian code breaking, I think you have 
ignored another obvious (IMHO) scenario:  Perhaps the CIA/NSA purposely 
leaked to Chalabi that they had the Iranian codes broken and perhaps 
the reason was that they didn't have the codes broken.  One can think 
of a number of different scenarios where you would want your adversary 
to THINK he had your codes broken when you didn't, including that the 
U.S. wanted Iran to change their technology to a technology they had a 
back door into from the current technology they didn't have a back door 
into!  Another possible reason would be to throw suspicion within the 
Iranian government on certain individuals which would be beneficial to 
U.S. interests.



From: Toby Bryans <toby@bryans.org>
Subject: Re: Cell Phone Jamming and Terrorist Attacks

This whole thing is particularly annoying as the only functionality of 
the mobile phones that was used during the attacks was the alarm. They 
were not called to detonate -- they all had an alarm set for a 
particular time: they don't even have to be on, as particular brands of 
phone can turn themselves on if an alarm is due.

Blocking mobile phones will not make any difference to this attack. You 
may as well ban people from wearing wristwatches...

Of course, there are examples of political opportunism on both sides of 
the pond:

<http://news.bbc.co.uk/1/hi/uk_politics/3602019.stm>

...would of course also make no difference with this particular attack.



From: Alexey Kirpichnikov <alexkir@r66.ru>
Subject: Photographing Subways and Terrorist Attacks

I live in Ekaterinburg, Russia and I'd like to say that photography is 
still prohibited in our subway. I don't know the reason and this seems 
quite funny to me. :) I think that even security officers here 
understand that this ban has no sense at all, because my friends tried 
to take photos in subway and it was ignored by policemen.

Still, "no photo and video" signs are everywhere in subway stations.


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