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Crime

To Identify Suspect In Idaho Killings, FBI Used Restricted Consumer DNA Data (nytimes.com) 38

An anonymous reader quotes a report from the New York Times: As investigators struggled for weeks to find who might have committed the brutal stabbings of four University of Idaho students in the fall of 2022, they were focused on a key piece of evidence: DNA on a knife sheath that was found at the scene of the crime. At first they tried checking the DNA with law enforcement databases, but that did not provide a hit. They turned next to the more expansive DNA profiles available in some consumer databases in which users had consented to law enforcement possibly using their information, but that also did not lead to answers.

F.B.I. investigators then went a step further, according to newly released testimony, comparing the DNA profile from the knife sheath with two databases that law enforcement officials are not supposed to tap: GEDmatch and MyHeritage. It was a decision that appears to have violated key parameters of a Justice Department policy that calls for investigators to operate only in DNA databases "that provide explicit notice to their service users and the public that law enforcement may use their service sites."

It also seems to have produced results: Days after the F.B.I.'s investigative genetic genealogy team began working with the DNA profiles, it landed on someone who had not been on anyone's radar:Bryan Kohberger, a Ph.D. student in criminology who has now been charged with the murders. The case has shown both the promise and the unregulated power of genetic technology in an era in which millions of people willingly contribute their DNA profiles to recreational databases, often to hunt for relatives. In the past, law enforcement officials would need to find a direct match between DNA at the crime scene and that of a specific suspect. Now, investigators can use consumer DNA data to build family trees that can zero in on a person of interest -- within certain policy limits.

To Identify Suspect In Idaho Killings, FBI Used Restricted Consumer DNA Data

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  • by Rosco P. Coltrane ( 209368 ) on Tuesday February 25, 2025 @10:49PM (#65195551)

    F.B.I. investigators then went a step further, according to newly released testimony, comparing the DNA profile from the knife sheath with two databases that law enforcement officials are not supposed to tap: GEDmatch and MyHeritage

    Case dismissed.

    • by Anonymous Coward
      FBI policy does not provide 4th amendment protection. First, your return to shore was not part of our negotiations nor our agreement so I must do nothing. And secondly, you must be a pirate for the pirate's code to apply and you're not. And thirdly, the code is more what you'd call "guidelines" than actual rules. Welcome aboard the Black Pearl, Miss Turner.
    • by CaptQuark ( 2706165 ) on Tuesday February 25, 2025 @11:16PM (#65195573)

      If you read the Terms and Conditions of MyHeritage:
      Any use of the DNA Services for law enforcement purposes, forensic examinations, criminal investigations, "cold case" investigations, identification of unknown deceased people, location of relatives of deceased people using cadaver DNA, and/or all similar purposes, is strictly prohibited, unless a court order is obtained. https://www.myheritage.com/ter... [myheritage.com]

      And from the Privacy Policy of MyHeritage:
      We will not provide information to law enforcement unless we are required by a valid court order or subpoena for genetic information. https://www.myheritage.com/pri... [myheritage.com]

      The story in the NYT doesn't give enough information about the investigation to draw a conclusion. From the article: It was a decision that appears to have violated key parameters of a Justice Department policy that calls for investigators to operate only in DNA databases "that provide explicit notice to their service users and the public that law enforcement may use their service sites."

      Does having a notice in both the ToS and Privacy Policy stating that law enforcement may request data with a subpoena or court order provide notice to the users of the service? And what was the exact wording in MyHeritage's ToS and PP back in December 2022? It is a valid question but the NYT opinion piece doesn't give enough details to adequately form an opinion of our own.

      • The NYTimes article is paywalled.

        It appears that the search was legal as long as the FBI agents had a court order or subpoena.

        Did they?

        If they didn't, then how did they get access to the DB?

        • by Entrope ( 68843 )

          The FBI can issue investigative subpoenas. Whether they did so in this case is a fair question; I don't know the answer. Doing that might have violated DOJ policy, but that wouldn't save Kohlberger.

    • by Retired Chemist ( 5039029 ) on Tuesday February 25, 2025 @11:24PM (#65195589)
      Justice department policy is not the law. If they obtained the match legally by use of a subpoena or warrant, it would still be admissible. If it is not admissible, they cannot use in court, but that would not necessarily prevent them from using other evidence to get a conviction.
      • that would not necessarily prevent them from using other evidence to get a conviction.

        Not true.

        Illegally obtained evidence is not admissible, and any otherwise legal evidence obtained as a result of the illegal evidence is also inadmissible.

        Fruit of the poisonous tree [wikipedia.org]

        Since he wasn't even a suspect until the DNA match, everything was a result of it.

        • by Entrope ( 68843 )

          Issuing a subpoena or getting a warrant that violates policy is not illegal or unconstitutional. The exclusionary rule is also married than you think: https://www.law.cornell.edu/su... [cornell.edu]; from the syllabus:

          Despite its broad deterrent purpose, the rule does not proscribe the use of illegally seized evidence in all proceedings or against all persons, and its application has been restricted to those areas where its remedial objectives are though most efficaciously served.

          In that case, a grand jury could hear questions based on illegally obtained evidence, and the witness was required to answer those questions. So even if the DNA results were illegally obtained in this case, they would simply not be admissible at trial.

    • that sounds like fruit of the forbidden tree get an good attorney to fight for your rights.

      • that sounds like fruit of the forbidden tree get an good attorney to fight for your rights.

        They did. They lost. This was already litigated [usatoday.com]. The standard American decision, that if you share your data with another commercial entity you have no reasonable expectation of privacy was applied. This is why Americans have to avoid giving private data to cloud providers.

        • This is why Americans have to avoid giving private data to cloud providers.

          Especially if they're planning a murder.

          • by Entrope ( 68843 )

            In this case, the murderer's relatives were the ones who uploaded their data. One presumes that they were not planning murder; they merely made it possible to identify him.

    • Almost. That piece of evidence is inadmissible. The question is if their method of parallel construction produced enough "evidence" that would be admissible if the primary evidence is thrown out.

      That's the corrupt bullshit here. On the one hand you have a system that says such evidence is inadmissible in a court, but on the other you can still use that to zero in on a subject of interest and build a case focusing only on that subject. In the worse such scenario you load the court with so much circumstantial

    • by Sique ( 173459 ) on Wednesday February 26, 2025 @04:17AM (#65195807) Homepage
      No. If the FBI never uses the evidence in court, but now, with the new lead, finds other corrobating evidence, the case might well go to court. If they take the DNA from the suspect now, and match it with the DNA on the knife sheath, they can prove a connection between the sheath and the suspect without ever mentioning MyHeritage in any court documents. In the same way, FBI can use hearsay to investigate a criminal case, but will not be able to use the hearsay in court.
  • I thought they saw the car there, then leave, then drive by slowly a time or two a few hours later.
  • The policy is wrong:

    Justice Department policy that calls for investigators to operate only in DNA databases "that provide explicit notice to their service users and the public that law enforcement may use their service sites."

    What next? Even if they have a warrant, can investigators only ask phone companies about a suspect number if they "provide explicit notice to their service users and the public that law enforcement may use their service sites."

    It's a war with evil. Use the tools you have as long as they don't harm the innocent.

    The judge sees it the same way:
    https://www.dailymail.co.uk/ne... [dailymail.co.uk]

    • All it'll take is one unsolved child kidnapping or similar and suddenly all DNA databases will be accessible in perpetuity without limits to the FBI, CIA, NSA, TSA, DHS, FEMA, INS, and DOGE.

      Which is why my DNA is on file as J.Blues, 1060 West Addison, Chicago, ILL.

    • by N1AK ( 864906 )
      If you have to link to the Daily Mail to back up your position then it's a pretty safe bet your opinion is wrong.

      You may want a world where everyone is fingerprinted, DNA registered etc automatically and that all phone activity is logged and available to law enforcement automatically; plenty of other people see this as a massive risk to civil liberty because you can't control how that information will be used or misused once it is collected. You want to bet someone like Trump or Nixon wouldn't be happy t
  • by Slashythenkilly ( 7027842 ) on Tuesday February 25, 2025 @11:26PM (#65195593)
    Too many cold cases have been solved with the obvious conclusion that this sort of evidence is overwhelmingly useful, abundant, and in the public interest to minimize costly and useless manpower law enforcement resources.
    • They could also save a TON of money and man-hours currently being wasted on investigation if we'd just give police the right to enter and search any house they please at any time.

      • by Entrope ( 68843 )

        There is no generic right to privacy in the US, and the third party doctrine is still alive and well. If you want to change that, advocate for that kind of change in federal law. Until then, this kind of disclosure is legally on a fundamentally different basis than warrantless searches of homes.

  • Unlike fingerprints, two people, even unrelated, can have the same set of DNA markers, just as they can have the same color skin, hair, eyes, and the same height, so simply by searching a DNA database, you can easily find false matches. It's all circumstantial, like the time the police questioned a family who did a Google search for pressure cookers around the time of the Boston Marathon bombings. [theatlantic.com]

    But once you've narrowed down a list of suspects, DNA is effective at incriminating and exonerating. That's all

    • 'you can easily find false matches'

      There's been ONE known example of a problematic match in a court case. DNA matches don't look at 'the same color skin, hair, eyes, and the same height', they look at specific bits of genetic code which means that the probability of a false match is very low.

      • by AmiMoJo ( 196126 )

        There have been many, many problematic DNA matches in the UK.

        One of the suspects in the Omagh bombing was acquitted after doubts were raised over the DNA evidence against them. It lead to a number of other cases being reviewed due to the use of "low copy number" DNA evidence. https://www.theguardian.com/uk... [theguardian.com]

        There are other cases where it was just police stupidity at fault. One man was accused of interfering with a postbox, but it turned out his DNA was there because a letter he was sending was in it.

        DNA is

        • by Entrope ( 68843 )

          The DNA matching technique used in that case was quickly re-validated and is still being used: https://en.wikipedia.org/wiki/... [wikipedia.org]

          The concerns about that technique are because it uses many PCR cycles to amplify trace amounts of DNA for sequencing. Is that the true of the evidence in this case?

          • by AmiMoJo ( 196126 )

            As well as the technique itself being questionable, the match was weak and there were many other matches in the police database, let along among the general population.

            The British justice system is poor at properly examining these technologies. Once a certain level of testing has been done, it is hard to challenge them. Typically the accused doesn't have the resources to get their own research done.

      • Yes, they look for specific markers: to process a lot of DNA quickly.

        And those markets match YOU with 30 or 40 people on the planet (slightly increasing with population increase).

        That only later might help for a real DNA test, as in comparing blood with a hair, or blood with sperm, etc.

    • Depends on what you get out of the database. If it's just some simple generic stuff sure, it's circumstantial. On the flip side actual DNA matching has so far only produced a single case where its been thrown out, and the problem was the police couldn't identify conclusively which of the *twins* comitted the crime.

      Add to that if you have a decent DNA sample you can test for mutations which often is able to tell even identical twins apart (something you can't do with fingerprints) and you have a pretty damn

    • You know, you make good arguments, except they're irrelevant to this case.
      The police used the DNA markers found from testing the blood left in knife sheath and found a strong connection to the defendant's father using those databases.
      Once the connection was established, they did a cheek swab test and the DNA found on the knife sheath on the crime scene was confirmed to be his [abc7ny.com].

      I'd say that was pretty good detective work, and anything but circumstantial.

      • I'd say that was pretty good detective work, and anything but circumstantial.

        Basically anything other than an eye-witness or a photograph is circumstantial evidence. We often casually assume that circumstantial evidence is weaker than direct evidence, but it's not. Often fingerprints are stronger clues than an eye witness.

    • In NYC the criminal gangs are already doxing / outing law enforcement / ICE officials. They too, can collect twinkie wrapper or used coffee cups to identify and match LE of interest using DNA/Gait/Facial/voice collections. It does not need to be accurate, as a family member match may be sufficient followed by purchasable geolocation phone data.
  • by locater16 ( 2326718 ) on Wednesday February 26, 2025 @12:13AM (#65195625)
    Then what's the point? Oh wait the US can't make laws anymore, just elect dictators that reverse the decisions of the previous one.
  • It has an opt-in policy for people who contribute their DNA.

    https://www.gedmatch.com/join-... [gedmatch.com]

    I don't understand why the article claims law enforcement was "not supposed to tap" GEDmatch.

    MyHeritage is a more clear-cut case, prohibiting Law Enforcement use. https://www.myheritage.com/pri... [myheritage.com]

All laws are simulations of reality. -- John C. Lilly

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