Entries Tagged "identification"

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Most Stolen Identities Never Used

This is something I’ve been saying for a while, and it’s nice to see some independent confirmation:

A new study suggests consumers whose credit cards are lost or stolen or whose personal information is accidentally compromised face little risk of becoming victims of identity theft.

The analysis, released on Wednesday, also found that even in the most dangerous data breaches—where thieves access social security numbers and other sensitive information on consumers they have deliberately targeted—only about 1 in 1,000 victims had their identities stolen.

The reason is that thieves are stealing far more identities than they need. Two years ago, if someone asked me about protecting against identity theft, I would tell them to shred their trash and be careful giving information over the Internet. Today, that advice is obsolete. Criminals are not stealing identity information in ones and twos; they’re stealing identity information in blocks of hundreds of thousands and even millions.

If a criminal ring wants a dozen identities for some fraud scam, and they steal a database with 500,000 identities, then—as a percentage—almost none of those identities will ever be the victims of fraud.

Some other findings from their press release:

A significant finding from the research is that different breaches pose different degrees of risk. In the research, ID Analytics distinguishes between “identity-level” breaches, where names and Social Security numbers were stolen and “account-level” breaches, where only account numbers—sometimes associated with names—were stolen. ID Analytics also discovered that the degree of risk varies based on the nature of the data breach, for example, whether the breach was the result of a deliberate hacking into a database or a seemingly unintentional loss of data, such as tapes or disks being lost in transit.

And:

ID Analytics’ fraud experts believe the reason for the minimal use of stolen identities is based on the amount of time it takes to actually perpetrate identity theft against a consumer. As an example, it takes approximately five minutes to fill out a credit application. At this rate, it would take a fraudster working full-time ­ averaging 6.5 hours day, five days a week, 50 weeks a year ­ over 50 years to fully utilize a breached file consisting of one million consumer identities. If the criminal outsourced the work at a rate of $10 an hour in an effort to use a breached file of the same size in one year, it would cost that criminal about $830,000.

Another key finding indicates that in certain targeted data breaches, notices may have a deterrent effect. In one large-scale identity-level breach, thieves slowed their use of the data to commit identity theft after public notification. The research also showed how the criminals who stole the data in the breaches used identity data manipulation, or “tumbling” to avoid detection and to prolong the scam.

That last bit is interesting, and it makes this recommendation even more surprising:

The company suggests, for instance, that companies shouldn’t always notify consumers of data breaches because they may be unnecessarily alarming people who stand little chance of being victimized.

I agree with them that all this notification is having a “boy who cried wolf” effect on people. I know people living in California who get disclosure notifications in the mail regularly, and who have stopped paying attention to them.

But remember, the main security value of notification requirements is the cost. By increasing the cost to companies of data thefts, the goal is for them to increase their security. (The main security value used to be the public shaming, but these breaches are now so common that the press no longer writes about them.) Direct fines would be a better way of dealing with the economic externality, but the notification law is all we’ve got right now. I don’t support eliminating it until there’s something else in its place.

Posted on December 12, 2005 at 9:50 AMView Comments

Miami Police Stages "Random Shows of Force"

They actually think this is a good idea:

Miami police announced Monday they will stage random shows of force at hotels, banks and other public places to keep terrorists guessing and remind people to be vigilant.

Deputy Police Chief Frank Fernandez said officers might, for example, surround a bank building, check the IDs of everyone going in and out and hand out leaflets about terror threats.

“This is an in-your-face type of strategy. It’s letting the terrorists know we are out there,” Fernandez said.

The operations will keep terrorists off guard, Fernandez said. He said al-Qaida and other terrorist groups plot attacks by putting places under surveillance and watching for flaws and patterns in security.

Boy, is this one a mess. How does “in-your-face” affect getting the people on your side? What happens if someone refuses to show an ID? What good is demanding an ID in the first place? And if I were writing a movie plot, I would plan my terrorist attack for a different part of town when the police were out playing pretend.

The response from the ACLU of Florida is puzzling, though. Let’s hope he just didn’t understand what was being planned.

EDITED TO ADD (11/29): This article is in error.

EDITED TO ADD (11/30): more info.

Posted on November 29, 2005 at 1:07 PMView Comments

Ex-MI5 Chief Calls ID Cards "Useless"

Refreshing candor:

The case for identity cards has been branded “bogus” after an ex-MI5 chief said they might not help fight terror.

Dame Stella Rimington has said most documents could be forged and this would render ID cards “useless”.

[…]

She said: “ID cards have possibly some purpose.

“But I don’t think that anybody in the intelligence services, particularly in my former service, would be pressing for ID cards.

“My angle on ID cards is that they may be of some use but only if they can be made unforgeable – and all our other documentation is quite easy to forge.

“If we have ID cards at vast expense and people can go into a back room and forge them they are going to be absolutely useless.

“ID cards may be helpful in all kinds of things but I don’t think they are necessarily going to make us any safer.”

Posted on November 18, 2005 at 6:48 AMView Comments

Instantaneous Data Grabbing

I think this is a harbinger of the future:

A high roller walks into the casino, ever so mindful of the constant surveillance cameras. Wanting to avoid sales pitches and other unwanted attention, he pays cash at each table and anonymously moves around frequently to discourage people who are trying to track his movements.

After a few hours of losses, he goes to the cashier and asks for a cash advance off of his credit card. The card tells the casino his name, but not much else. As is required by card issuers, the cashier asks for some other identification, such as a driver’s license. That license offers the casino a ton of CRM identification goodies, but the cashier is only supposed to glance at the picture and the name to verify identity and hand the license—and its info treasure trove—back to the gambler.

Not any more, at least if a Minneapolis company called Cash Systems Inc. has anything to say about it. The firm was recently awarded a U.S. patent for a device that can grab all of the data of almost any U.S. driver’s license in seconds and instantly dump it into a casino’s CRM system.

On the one hand, the technology isn’t very interesting; it’s probably just a camera and some OCR software optimized for driver’s licenses. But what is interesting is that the technology is available as a mass-market product.

Where else do you routinely show your ID? Who else might want all that information for marketing purposes?

Posted on November 7, 2005 at 7:45 AMView Comments

The Security of RFID Passports

My fifth column for Wired:

The State Department has done a great job addressing specific security and privacy concerns, but its lack of technical skills is hurting it. The collision-avoidance ID is just one example of where, apparently, the State Department didn’t have enough of the expertise it needed to do this right.

Of course it can fix the problem, but the real issue is how many other problems like this are lurking in the details of its design? We don’t know, and I doubt the State Department knows either. The only way to vet its design, and to convince us that RFID is necessary, would be to open it up to public scrutiny.

The State Department’s plan to issue RFID passports by October 2006 is both precipitous and risky. It made a mistake designing this behind closed doors. There needs to be some pretty serious quality assurance and testing before deploying this system, and this includes careful security evaluations by independent security experts. Right now the State Department has no intention of doing that; it’s already committed to a scheme before knowing if it even works or if it protects privacy.

My previous entries on RFID passports are here, here, and here.

Posted on November 3, 2005 at 8:30 AMView Comments

Preventing Identity Theft: The Living and the Dead

A company called Metacharge has rolled out an e-commerce security service in the United Kingdom. For about $2 per name, website operators can verify their customers against the UK Electoral Roll, the British Telecom directory, and a mortality database.

That’s not cheap, and the company is mainly targeting customers in high-risk industries, such as online gaming. But the economics behind this system are interesting to examine. They illustrate externalities associated with fraud and identity theft, and why leaving matters to the companies won’t fix the problem.

The mortality database is interesting. According to Metacharge, “the fastest growing form of identity theft is not phishing; it is taking the identities of dead people and using them to get credit.”

For a website, the economics are straightforward. It costs $2 to verify that a customer is alive. If the probability the customer is actually dead (and therefore fraudulent) times the average losses due to this dead customer is more than $2, this service makes sense. If it is less, then the service doesn’t. For example, if dead customers are one in ten thousand, and they cost $15,000 each, then the service is not worth it. If they cost $25,000 each, or if they occur twice as often, then it is worth it.

Imagine now that there is a similar service that identifies identity fraud among living people. The same economic analysis would also hold. But in this case, there’s an externality: there is an additional cost of fraud borne by the victim and not by the website. So if fraud using the identity of living customers occurs at a rate of one in ten thousand, and each one costs $15,000 to the website and another $10,000 to the victim, the website will conclude that the service is not worthwhile, even though paying for it is cheaper overall. This is why legislation is needed: to raise the cost of fraud to the websites.

There’s another economic trade-off. Websites have two basic opportunities to verify customers using services such as these. The first is when they sign up the customer, and the second is after some kind of non-payment. Most of the damages to the customer occur after the non-payment is referred to a credit bureau, so it would make sense to perform some extra identification checks at that point. It would certainly be cheaper to the website, as far fewer checks would be paid for. But because this second opportunity comes after the website has suffered its losses, it has no real incentive to take advantage of it. Again, economics drives security.

Posted on October 28, 2005 at 8:08 AMView Comments

Secret Forensic Codes in Color Laser Printers

Many color laser printers embed secret information in every page they print, basically to identify you by. Here, the EFF has cracked the code of the Xerox DocuColor series of printers.

The DocuColor series prints a rectangular grid of 15 by 8 miniscule yellow dots on every color page. The same grid is printed repeatedly over the entire page, but the repetitions of the grid are offset slightly from one another so that each grid is separated from the others. The grid is printed parallel to the edges of the page, and the offset of the grid from the edges of the page seems to vary. These dots encode up to 14 7-bit bytes of tracking information, plus row and column parity for error correction. Typically, about four of these bytes were unused (depending on printer model), giving 10 bytes of useful data. Below, we explain how to extract serial number, date, and time from these dots. Following the explanation, we implement the decoding process in an interactive computer program.

Because of their limited contrast with the background, the forensic dots are not usually visible to the naked eye under white light. They can be made visible by magnification (using a magnifying glass or microscope), or by illuminating the page with blue instead of white light. Pure blue light causes the yellow dots to appear black. It can be helpful to use magnification together with illumination under blue light, although most individuals with good vision will be able to see the dots distinctly using either technique by itself.

EDITED TO ADD: News story here.

EDITED TO ADD: And another.

Posted on October 19, 2005 at 8:12 AMView Comments

Real ID and Identity Theft

Reuters on the trade-offs of Real ID:

Nobody yet knows how much the Real ID Act will cost to implement or how much money Congress will provide for it. The state of Washington, which has done the most thorough cost analysis, put the bill in that state alone at $97 million in the first two years and believes it will have to raise the price of a driver’s license to $58 from $25.

On the other hand, a secure ID system could save millions in Medicare and Medicaid fraud and combat identity theft.

Why does Reuters think that a better ID card will protect against identity theft? The problem with identity theft isn’t that ID cards are forgeable, it’s that financial institutions don’t check them before authorizing transactions.

Posted on October 14, 2005 at 11:20 AMView Comments

Sidebar photo of Bruce Schneier by Joe MacInnis.