Submitted 8 months ago by 0x0@programming.dev to technology@lemmy.world
https://pluralistic.net/2024/02/05/cyber-dunning-kruger/
I was tricked by a phone-phisher pretending to be from my bank, and he convinced me to hand over my credit-card number, then did $8,000+ worth of fraud with it before I figured out what happened.
Props to him for talking about it. A lot of people get too embarrassed to tell anyone they got scammed. The reality is that phishing works on a ton of people and we should avoid shaming the victims. Everyone’s acts like they’re a digital security expert until their credit card gets stolen.
Told a family member the same when she almost got tricked by a scammer & called me to see if it was legit. They wouldn’t try it if it wasn’t convincing enough to catch people in the scam to make it worth their time to do this crime instead of some other.
Never, ever, ever, ever volunteer personal information on a call you did not initiate, with a number you haven’t verified from a trusted source, like a brick and mortar branch, or your online banking account.
He said someone in the bank’s supply chain was compromised, as they knew a lot of details that should have been known only to the bank. Also that the only information he gave away were the last digits of a card number.
When a possible fraud department calls you, you shouldn’t need to verify any digits of the card. Answer only yes or no.
Call them back if you need to give additional information.
No, he gave away the last seven.
Right? This is the bare bones basic right here.
I hadn’t given [the scammer] the last four digits of my card.
Wait a sec.
He hadn’t asked for the last four digits. He’d asked for the last seven digits. At the time, I’d found that very frustrating, but now – “The first nine digits are the same for every card you issue, right?” I asked the VP.
I’d given him my entire card number.
Huh. I hadn’t realized the institution prefix was so long.
I didn’t know that either but I’d also never divulge that info on an inbound phone call.
It’s public info, you can just Google “what does my card number mean” and there’s tons of results
The real answer here is to have decent digital ID as 2-factor authentication.
This scam would be practically impossible in Sweden with BankID for example.
Adding multiple factors to authentication just adds another step to the scam, it doesn’t make it impossible by any means.
For BankID it somewhat does, because only registered services can make the request - so they’d need to register a scam service and then use that. Which also makes it an easier job for anti-fraud police.
So it’d be a lot more complicated.
Like obviously at a certain point if someone is willing to do everything they can - then they will be scammed, see this for example: www.bbc.com/news/uk-england-leeds-67208755
But the more steps there are, the higher the chance the person realises it is a scam.
It doesn’t matter how many locks you have if you give the scammers the keys. And so many people give up the keys
Another thing is that I feel like the era of the private phone number has passed. I see the use case for phone numbers for businesses, but people just don’t use them very much anymore otherwise.
Like, we don’t memorize them. We don’t dial them. They’re just entries in our contacts.
At this point, we could create an alternative way of contacting private phones. Something based on whitelisting instead of blacklisting. Something that can be easily shared but not easily guessed. Something that would be easy to trace who called you.
All of these phone scams rely on the idea that a stranger can just up and contact you without any effort. It’s ridiculous. If we got rid of that, we’d save people from untold billions of dollars of scams almost instantly.
Yeah, my ex was scammed this way too - exactly like Cory describes, they happened to ring right as she was going through the whole visa and tax process and pretend to be regarding the IRS, etc. and since she was dealing with a lot of similar calls it was an easy mistake to make.
More services available online and e-mail communication makes this a bit better.
PSTN is easy for surveillance to be just replaced with a modern system.
It is also relied on by business models of many things, like WhatsApp and Telegram and what not.
The something you are talking about seems suspiciously similar to the Internet with cryptographic IDs.
He gave them his CC number over the phone. How would Sweden’s BankID protect against that?
More that you’d never need to provide it, but many transactions will also require 2FA, even by the credit card.
I think this is true in most of the EU banks.
Spain and the UK have no real digital ID (Spain has some horrible Java certificate based system, but you can’t use it for much). I think Germany’s digital ID is in a similar position too although it’s been many years since I lived there now.
The UK is in the same position as the US with no national ID or residence registration at all.
Only the Netherlands, Finland and Scandinavia really have it sorted out for banking and government services.
Good article as usual from Cory Doctorow. I was very surprised by the title, but reading what happened made more sense.
I had something similar happen while job hunting. I didn’t give away any useful info before I caught on, but it was a combo of two factors that caught me with my shields down:
• I was using my phone instead of my desktop, so it didn’t show the email address (just the person’s name)
• I had never heard of a recruiting scam before
I’m not sure, but I figure they’d have asked for my direct deposit info when I was “hired” and then use that to steal money.
Recruitment scams tend to involve the hirer sending you a large check to cover office setup purchases from the hirer’s “trusted vendor” and you keep the excess as your first paycheck. Unfortunately, the check is fake and the vendor is just the hirer behind a fake website. But the check “clears” in a couple of days, so you think you have the money, and you spend that money in the fake website, then your bank lets you know the check was fake and takes all the money back.
I’m sure there are other scenarios but they all involve a fake payment that eventually gets taken back. Glad you weren’t taken in.
Just got a ‘group’ SMS this morning trying to phish multiple people at the same time, it is never ending.
I get those about once a week. “Your package cannot be delivered” Come on over here you spammy bastards, i’ll deliver a package of my goddamn BOOT up the side of your arse! That’s what I say. It helps me feel better, because why not feel better?
Lol an entire article about someone giving away info that should never be given away.
Call your bank back if they start requesting info. shakes head
From the article:
it’s also important to remind people that everyone is vulnerable sometimes, and scammers are willing to try endless variations until an attack lands at just the right place, at just the right time, in just the right way. If you think you can’t get scammed, that makes you especially vulnerable:
I know I can’t get scammed. This isn’t an idle claim, but seeing as it is impossible to prove, we can just leave it at that
My rule of thumb is to never give away any information, always call back. And I don’t have credit cards, never have, whenever I need I just use virtual disposable CCs from my banking system.
Anything that requires any personal info from me needs to come in the form of a physical letter. I do not give out anyone over the phone. Emails are not legally binding.
Hold on the scammer could spend 8000 usd without even knowing the card’s PIN number?
It’s a credit card, they don’t typically have pins like debit cards do. They do have a 3 digit CVC code on the back, but 3 digits is pretty easy to get just by brute force guessing.
Three digits is not that easy to get by brute force. It’ll be locked for fraud pretty quickly.
However the CVV is usually only required for card-not-present purchases. One way around that is to imprint the number onto their own magstripe card and run it as a card-present transaction.
Brokkr@lemmy.world 8 months ago
When a fraud department calls you, you don’t need to provide any more information than your name and yes/no answers. If they are asking for any additional information, tell them that you don’t trust their authenticity and that you’ll call the number on the credit card. A legitimate agent will politely end the conversation there.
Then you better call that number on the card quickly.
QuarterSwede@lemmy.world 8 months ago
This is the solution.
Had this happen once, followed those steps, and the CSR was very interested in getting the details of the call. They put a freeze on that account for a bit as well. Nothing was taken.
GenderNeutralBro@lemmy.sdf.org 8 months ago
True for any company asking for anything sensitive.
I’ve gotten scams from my internet provider asking me if I want to upgrade my plan with a new discount. Caller ID was spoofed and it sounded pretty legit, until they started asking me about my current plan tier and price. I was like “uh, you tell me. You’re the one with access to my account info.” After they hemmed and hawed about that, I just hung up.
Honestly, you should be suspicious of ANY incoming calls at this point. There are convincing scams that spoof the voices of people you actually know using trained AI. It’s actually pretty easy to do now, since you only need a few seconds of audio to use as a training sample. Anyone who’s ever posted a video with their voice on social media can potentially have their voice spoofed. I’ve warned my family about this, since most of us have our voice out there somewhere.
Phone calls are dumb. SMS is dumb. Phone numbers are dumb. Phone line security is basically non-existent. It’s wild that phone numbers have become the de facto ID on the internet; almost everything requires SMS auth to register now. PHONE NUMBERS ARE NOT PERSONAL IDS.
ech@lemm.ee 8 months ago
An unanswered phone is a happy phone.
Silentiea@lemm.ee 8 months ago
The worst thing imo is when a form will say they need to verify your identity, so they ask you to give them a phone number you can receive a text at to do a 2fa.
…how, exactly, does that verify anything other than that I own access to a phone number that can receive a text?
Rai@lemmy.dbzer0.com 8 months ago
SIM swapping to hijack OTPs is insane.
A_Very_Big_Fan@lemmy.world 8 months ago
They should already have your name too if they’re calling you
Revan343@lemmy.ca 8 months ago
They’re going to ask for your name so as to confirm they’ve gotten a hold of the right person
0x0@programming.dev 8 months ago
Any department really, but that’s just me.