Entries Tagged "crime"

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Cryptographically-Secured Murder Confession

From the Associated Press:

Joseph Duncan III is a computer expert who bragged online, days before authorities believe he killed three people in Idaho, about a tell-all journal that would not be accessed for decades, authorities say.

Duncan, 42, a convicted sex offender, figured technology would catch up in 30 years, “and then the world will know who I really was, and what I really did, and what I really thought,” he wrote May 13.

Police seized Duncan’s computer equipment from his Fargo apartment last August, when they were looking for evidence in a Detroit Lakes, Minn., child molestation case.

At least one compact disc and a part of his hard drive were encrypted well enough that one of the region’s top computer forensic specialists could not access it, The Forum reported Monday.

This is the kind of story that the government likes to use to illustrate the dangers of encryption. How can we allow people to use strong encryption, they ask, if it means not being able to convict monsters like Duncan?

But how is this different than Duncan speaking the confession when no one was able to hear? Or writing it down and hiding it where no one could ever find it? Or not saying anything at all? If the police can’t convict him without this confession—which we only have his word for as existing—then maybe he’s innocent?

Technologies have good and bad uses. Encryption, telephones, cars: they’re all used by both honest citizens and by criminals. For almost all technologies, the good far outweighs the bad. Banning a technology because the bad guys use it, denying everyone else the beneficial uses of that technology, is almost always a bad security trade-off.

EDITED TO ADD: Looking at the details of the encryption, it’s certainly possible that the authorities will break the diary. It probably depends on how random a key Duncan chose, although possibly on whether or not there’s an implementation error in the cryptographic software. If I had more details, I could speculate further.

Posted on August 15, 2005 at 2:17 PM • View Comments

Low-Tech Loitering Countermeasure

Amazingly, this works:

To clear out undesirables, opera and classical music have been piped into Canadian parks, Australian railway stations, 7-Eleven parking lots and, most recently, London Underground stops.

According to most reports, it works. Figures from the British capital released in January showed robberies in the subway down by 33 percent, assaults on staff by 25 percent and vandalism of trains and stations by 37 percent. Sources in other locales have reported fewer muggings and drug deals. London authorities now plan to expand the playing of Mozart, Vivaldi, Handel and opera (sung by Pavarotti) from three tube stations to an additional 35.

It’s not new:

But as Kahle points out, “It’s well known within the industry that classical music discourages teen loitering. It was first used by 7-11 stores across the country over a decade ago.”

Note that this does not reduce loitering, but moves it around. But if you’re the owner of a 7-Eleven, you don’t care if kids are loitering at the store down the block. You just don’t want them loitering at your store.

Posted on August 6, 2005 at 7:46 AM • View Comments

How to Not Fix the ID Problem

Several of the 9/11 terrorists had Virginia driver’s licenses in fake names. These were not forgeries; these were valid Virginia IDs that were illegally sold by Department of Motor Vehicle workers.

So what did Virginia do to correct the problem? They required more paperwork in order to get an ID.

But the problem wasn’t that it was too easy to get an ID. The problem was that insiders were selling them illegally. Which is why the Virginia “solution” didn’t help, and the problem remains:

The manager of the Virginia Department of Motor Vehicles office at Springfield Mall was charged yesterday with selling driver’s licenses to illegal immigrants and others for up to $3,500 apiece.

The arrest of Francisco J. Martinez marked the second time in two years that a Northern Virginia DMV employee was accused of fraudulently selling licenses for cash. A similar scheme two years ago at the DMV office in Tysons Corner led to the guilty pleas of two employees.

And after we spend billions on the REAL ID act, and require even more paperwork to get a state ID, the problem will still remain.

Posted on July 19, 2005 at 1:15 PM • View Comments

Surveillance Cameras and Terrorism

I was going to write something about the foolishness of adding cameras to public spaces as a response to terrorism threats, but Scott Henson said it already:

Homeland Security Ubermeister Michael Chertoff just told NBC’s Tim Russert on Meet the Press this morning that the United States should invest in “cameras and dogs” to protect subway, rail and bus transit systems from terrorist attacks.

B.S.

Surveillance cameras didn’t deter the terrorist attacks in London. They didn’t stop the courthouse killing spree in Atlanta. But they’re prone to abuse. And at the end of they day they don’t reduce crime.

Posted on July 12, 2005 at 8:13 AM • View Comments

Noticing Data Misuse

Everyone seems to be looking at their databases for personal information leakages.

Tax liens, mortgage papers, deeds, and other real estate-related documents are publicly available in on-line databases run by registries of deeds across the state. The Globe found documents in free databases of all but three Massachusetts counties containing the names and Social Security numbers of Massachusetts residents….

Although registers of deeds said that they are unaware of cases in which criminals used information from their databases maliciously, the information contained in the documents would be more than enough to steal an identity and open new lines of credit….

Isn’t that part of the problem, though? It’s easy to say “we haven’t seen any cases of fraud using our information,” because there’s rarely a way to tell where information comes from. The recent epidemic of public leaks comes from people noticing the leak process, not the effects of the leaks. So everyone thinks their data practices are good, because there have never been any documented abuses stemming from leaks of their data, and everyone is fooling themselves.

Posted on July 5, 2005 at 8:47 AM • View Comments

Wired on Identity Theft

This is a good editorial from Wired on identity theft.

Following are the fixes we think Congress should make:

Require businesses to secure data and levy fines against those who don’t. Congress has mandated tough privacy and security standards for companies that handle health and financial data. But the rules for credit agencies are woefully inadequate. And they don’t cover other businesses and organizations that handle sensitive personal information, such as employers, academic institutions and data brokers. Congress should mandate strict privacy and security standards for anyone who handles sensitive information, and apply tough financial penalties against companies that fail to comply.

Require companies to encrypt all sensitive customer data. Any standard created to protect data should include technical requirements to scramble the data—both in storage and during transit when data is transferred from one place to another. Recent incidents involving unencrypted Bank of America and CitiFinancial data tapes that went missing while being transferred to backup centers make it clear that companies think encryption is necessary only in certain circumstances.

Keep the plan simple and provide authority and funds to the FTC to ensure legislation is enforced. Efforts to secure sensitive data in the health and financial industries led to laws so complicated and confusing that few have been able to follow them faithfully. And efforts to monitor compliance have been inadequate. Congress should develop simpler rules tailored to each specific industry segment, and give the FTC the necessary funding to enforce them.

Keep Social Security numbers for Social Security. Social Security numbers appear on medical and voter-registration forms as well as on public records that are available through a simple internet search. This makes it all too easy for a thief to obtain the single identifying number that can lead to financial ruin for victims. Americans need a different unique identifying number specifically for credit records, with guarantees that it will never be used for authentication purposes.

Force credit agencies to scrutinize credit-card applications and verify the identity of credit-card applicants. Giving Americans easy access to credit has superseded all other considerations in the cutthroat credit-card business, helping thieves open accounts in victims’ names. Congress needs to bring sane safeguards back into the process of approving credit—even if it means adding costs and inconveniencing powerful banking and financial interests.

Extend fraud alerts beyond 90 days. The Fair Credit Reporting Act allows anyone who suspects that their personal information has been stolen to place a fraud alert on their credit record. This currently requires a creditor to take “reasonable” steps to verify the identity of anyone who applies for credit in the individual’s name. It also requires the creditor to contact the individual who placed the fraud alert on the account if they’ve provided their phone number. Both conditions apply for 90 days. Of course, nothing prevents identity thieves from waiting until the short-lived alert period expires before taking advantage of stolen information. Congress should extend the default window for credit alerts to a minimum of one year.

Allow individuals to freeze their credit records so that no one can access the records without the individuals’ approval. The current credit system opens credit reports to almost anyone who requests them. Individuals should be able to “freeze” their records and have them opened to others only when the individual contacts a credit agency and requests that it release a report to a specific entity.

Require opt-in rather than opt-out permission before companies can share or sell data. Many businesses currently allow people to decline inclusion in marketing lists, but only if customers actively request it. This system, known as opt-out, inherently favors companies by making it more difficult for consumers to escape abusive data-sharing practices. In many cases, consumers need to wade through confusing instructions, and send a mail-in form in order to be removed from pre-established marketing lists. The United States should follow an opt-in model, where companies would be forced to collect permission from individuals before they can traffic in personal data.

Require companies to notify consumers of any privacy breaches, without preventing states from enacting even tougher local laws. Some 37 states have enacted or are considering legislation requiring businesses to notify consumers of data breaches that affect them. A similar federal measure has also been introduced in the Senate. These are steps in the right direction. But the federal bill has a major flaw: It gives companies an easy out in the case of massive data breaches, where the number of people affected exceeds 500,000, or the cost of notification would exceeds $250,000. In those cases, companies would not be required to notify individuals, but could comply simply by posting a notice on their websites. Congress should close these loopholes. In addition, any federal law should be written to ensure that it does not pre-empt state notification laws that take a tougher stance.

As I’ve written previously, this won’t solve identity theft. But it will make it harder and protect the privacy of everyone. These are good recommendations.

Posted on June 29, 2005 at 7:18 AM • View Comments

Indian Call Center Sells Personal Information

There was yet another incident where call center staffer was selling personal data. The data consisted of banking details of British customers, and was sold by people at an outsourced call center in India.

I predict a spate of essays warning us of the security risks of offshore outsourcing. That’s stupid; this has almost nothing to do with offshoring. It’s no different than the Lembo case, and that happened in the safe and secure United States.

There are security risks to outsourcing, and there are security risks to offshore outsourcing. But the risk illustrated in this story is the risk of malicious insiders, and that is mostly independent of outsourcing. Lousy wages, lack of ownership, a poor work environment, and so on can all increase the risk of malicious insiders, but that’s true regardless of who owns the call center or in what currency the salary is paid in. Yes, it’s harder to prosecute across national boundaries, but the deterrence here is more contractual than criminal.

The problem here is people, not corporate or national boundaries.

Posted on June 24, 2005 at 9:35 AM • View Comments

Organized Retail Theft

There are two distinct shoplifting threats: petty shoplifting and Organized Retail Theft.

Organized retail theft (ORT) is a growing problem throughout the United States, affecting a wide-range of retail establishments, including supermarkets, chain drug stores, independent pharmacies, mass merchandisers, convenience stores, and discount operations. It has become the most pressing security problem confronting retailers. ORT losses are estimated to run as high as $15 billion annually in the supermarket industry alone ­ and $34 billion across all retail. ORT crime is separate and distinct from petty shoplifting in that it involves professional theft rings that move quickly from community to community and across state lines to steal large amounts of merchandise that is then repackaged and sold back into the marketplace. Petty shoplifting, as defined, is limited to items stolen for personal use or consumption.

Their list of 50 most shoplifted items consists of small, expensive things with long shelf life: over-the-counter drugs, mostly.

#1 Advil tablet 50 ct

#2 Advil tablet 100 ct

#3 Aleve caplet 100 ct

#4 EPT Pregnancy Test single

#5 Gillette Sensor 10 ct

#6 Kodak 200 24 exp

#7 Similac w/iron powder – case

#8 Similac w/iron powder – single can

#9 Preparation H 12 ct

#10 Primatene tablet 24 ct

Found on BoingBoing.

Posted on June 22, 2005 at 1:06 PM • View Comments

DNA Identification

Here’s an interesting application of DNA identification. Instead of searching for your DNA at the crime scene, they search for the crime-scene DNA on you.

The system, called Sentry, works by fitting a box containing a powder spray above a doorway which, once primed, goes into alert mode if the door is opened.

It then sprays the powder when there is movement in the doorway again.

The aim is to catch a burglar in the act as stolen items are being removed.

The intruder is covered in the bright red powder, which glows under ultraviolet (UV) light and can only be removed with heavy scrubbing.

However, the harmless synthetic DNA contained in the powder sinks into the skin and takes several days, depending on the person’s metabolism, to work its way out.

Posted on June 22, 2005 at 8:39 AM • View Comments

Defining "Access" in Cyberspace

I’ve been reading a lot of law journal articles. It’s interesting to read legal analyses of some of the computer security problems I’ve been wrestling with.

This is a fascinating paper on the concepts of “access” and “authorized access” in cyberspace. The abstract:

In the last twenty-five years, the federal government and all fifty states have enacted new criminal laws that prohibit unauthorized access to computers. These new laws attempt to draw a line between criminality and free conduct in cyberspace. No one knows what it means to access a computer, however, nor when access becomes unauthorized. The few courts that have construed these terms have offered divergent interpretations, and no scholars have yet addressed the problem. Recent decisions interpreting the federal statute in civil cases suggest that any breach of contract with a computer owner renders use of that computer an unauthorized access. If applied to criminal cases, this approach would broadly criminalize contract law on the Internet, potentially making millions of Americans criminals for the way they write e-mail and surf the Web.

This Article presents a comprehensive inquiry into the meaning of unauthorized access statutes. It begins by explaining why legislatures enacted unauthorized access statutes, and why early beliefs that such statutes solved the problem of computer misuse have proved remarkably naïve. Next, the Article explains how the courts have construed these statutes in an overly broad way that threatens to criminalize a surprising range of innocuous conduct involving computers. In the final section, the Article offers a normative proposal for interpreting access and authorization. This section argues that courts should reject a contract theory of authorization, and should narrow the scope of unauthorized access statutes to circumvention of code-based restrictions on computer privileges. The section justifies this proposal on several grounds. First, the proposal will best mediate the line between securing privacy and protecting the liberty of Internet users. Second, the proposal mirrors criminal law’s traditional treatment of crimes that contain a consent element. Third, the proposed approach is consistent with the basic theories of punishment. Fourth, the proposed interpretation avoids possible constitutional difficulties that may arise under the broader constructions that courts recently have favored.

It’s a long paper, but I recommend reading it if you’re interested in the legal concepts.

Posted on June 14, 2005 at 7:16 AM • View Comments

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Sidebar photo of Bruce Schneier by Joe MacInnis.