5 ms·

But it would be perfectly reasonable - and not at odds with anyone's justice system - to set your fraud detection trigger such that: if (source.isSuspicious()

• forgetsusername 10y ago
  >if (source.isSuspicious() What are the attributes of the source object that we need to determine if it's suspicious? That's the hard part.
  • johnmaguire2013 10y ago
    First time user of WU sending money to Nigeria or Ghana seems pretty reasonable to me.
    • TorKlingberg 10y ago
      Some people have family in Nigeria or Ghana, and everyone is a first time use once. The whole point of Western Union is sending money to places that don't have a solid banking system.
      • kbenson 10y ago
        Asking if they are sure it's not fraud is not necessarily preventing them from using the service. People with family in those areas will presumably know based on the wording that it doesn't apply to them. A notice that the person has to acknowledge seems a fairly innocuous defense mechanism.
        • jandrese 10y ago
          Even something as simple as: Have you physically met and personally know the person you are sending money to? Are they a family member? If you answered no to both of these questions STOP NOW IT IS PROBABLY A SCAM. If you wish to continue please consult with the teller.
          • partycoder 10y ago
            Under that criteria, 100% of eBay transactions would be scams.
            • jandrese 10y ago
              If you are buying a laptop off of eBay from Nigeria and they demand that you use Western Union to pay for it there is very close to a 100% chance that you are being scammed.
    • wheelerwj 10y ago
      First time user of WU sending more than $500 to Nigeria or Ghana seems pretty reasonable to me. Let alone thousands or tens of thousands. At the end of the day though, scammers will be scammers and victims will be victims. You can't prevent everything but you can still try harder than WU.
      • Ar-Curunir 10y ago
        Really? At least you would test that the system works before handing over so much of your money to them, right?
        • wheelerwj 10y ago
          you'd be surprised. A particularly common scam involves having the victim send 2000-2500 and the going for smaller amounts, $250-1000, on rounds 2+. I'm not particularly well versed in romances scams but I've heard they can start in the similar range and then escalate into 5 figures quickly.
  • sedachv 10y ago
    I think it is valid to think in terms of expected value here, where value is negative (a loss), since there is a large volume of transactions so the law of large numbers will apply. Set a threshold of expected loss below which you will not flag transactions. Then either very large payments or relatively smaller payments to countries with a higher known percentage of fraudulent transactions will flag a transaction. You can further refine this if for example there is a relationship between observed fraud rate and transaction amount. If a company profits off of fraudulent transactions and is aware of the fraud, and the attorney general or equivalent stops viewing this as negligence, there is an incentive for the company to encourage this fraud to increase profits.
• partycoder 10y ago
  It is as reasonable as proactively detaining everyone using tatoos or sports clothing. Correlation does not imply causation. Ethically, I do not think it is correct to outright flag an entire country. It can be used as one factor, but that in itself is not enough. Japan for example, a country that is not usually associated with crime, has one of the most profitable crime organizations in the world, the Yakuza. The UK might be where most transactions tied to money laundering are conducted, and so on so forth. In the grand scale of things, Nigerians are in a lower order of magnitude when it comes to dirty money. Fraud detection, at scale, takes not one or two but many factors in consideration. That would produce a level of confidence that will translate into a suggested action. If the confidence is high, a fraud detection system will take an action without human intervention. If the confidence is low, a human needs to intervene and take action.
  • sixo 10y ago
    It's a good bit more reasonable than arresting people.
  • adevine 10y ago
    You are confusing legal restrictions specifically set up to limit the power of the state with tools every company will use to limit fraud. For example, you speak of "presumption of innocence" and "burden of proof" as "core concepts of our justice system". These are only core concepts of our criminal justice system; our civil justice system has very different rules for burden of proof, for example. Some countries have much, much higher percentage of fraudulent transactions than other countries, and it's perfectly reasonable for Western Union to use country of origin as a factor in raising the fraud red flag. Western Union doesn't have the power to arrest anybody, and they have no reason to "presume innocence" for any one of their customers. If anything, when it comes to monetary transfers, I think it's safer to "presume guilt", that is assume all transactions have reason to be fraudulent, and then only let transactions through if you have strong reason to believe they are not fraudulent.
    • partycoder 10y ago
      The burden of proof is still on the party forwarding an accusation in civil cases. Presumption of innocence still holds in civil cases. Presumption of innocence is even in the UN universal declaration of human rights. What is considered burden of proof would be different, but it is still responsibility of the person forwarding the accusation. What you describe would be an accusation through "probable cause", described as reasonable grounds to conduct a search or investigation. That being said I think country of origin are not reasonable grounds. Could be an individual sending money home, could be a merchant, could be anything.