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Topic: A Serious Bitcoin Security Warning!!! - page 3. (Read 558 times)

legendary
Activity: 4424
Merit: 4794
October 24, 2019, 01:25:11 AM
#4
this topic aint new but worth a mention
other tricks are that these qr readers may actually have a list of 200k-11m addresses preloaded of vanity gen addresses of every first 3-4 characters of an address. but where the scammer has all the privkeys of.

because some people only check the first few characters the destination of a tx appears to match where you hope it should go, so people are easily duped if in a rush

best advice after scanning an address. check the destination. its best to check the whole address matchs, but if in a rush check the final few characters. not the first few. this is because its harder to vanity gen the final few characters than it is to gen the first few

also some wallet apps themselves has issues. where the user viewing display shows what you want, but the code signing a tx is signing for a different destination

in short be careful with all apps, whether just a reader or a wallet or even an unrelated app that can be a trojan
legendary
Activity: 2310
Merit: 1035
Not your Keys, Not your Bitcoins
October 24, 2019, 01:24:58 AM
#3
I would never use a third party service to generate a QR code for financial - bitcoin transactions. Even if I do I would triple check that the QR code is representing the correct address and not a scame one. One should know that the internet is full of scams and conmne. Especially when dealing with cryptocurrencies you need to be very careful with your funds' security. Triple check everything and be extra cautious, that's all you need to do
sr. member
Activity: 1008
Merit: 355
October 24, 2019, 12:56:22 AM
#2


One thing for sure, nothing can be safe anymore as long as we are something that is connected to online and gadgets. Soon scammers can find their way even if we are staying offline. Such is the genius and great creative skills these people are using and employing so that can be able to get to people's hoard of money and cryptocurrency. QR codes which we thought to be safe and can't be cracked are now becoming a victim of the shenanigans scammers are infecting the world of cryptocurrency. This should really be serving as a big warning never to be complacent when it comes to securing one's wallet and digital assets.

"Researchers calculated that some $20,000 had recently been lost to QR code scams, calling their findings "just the tip of the iceberg," as thieves likely regularly change their bitcoin and crypto addresses to avoid detection and blacklisting.

Last month, it was found bitcoin and cryptocurrency fraudsters stole over $4 billion of digital currency from investors and users in the first six months of 2019, a significant increase on the $1.7bn stolen in 2018."
copper member
Activity: 102
Merit: 3
October 24, 2019, 12:16:43 AM
#1
Here's another privacy issue and extra-carefulness is always needed!
There are a lot of people who use QR codes to share different data (also to share bitcoin or other cryptos) from their smartphones and the article below states the risks of using QR codes.  

https://www.forbes.com/sites/billybambrough/2019/09/12/researchers-have-issued-a-serious-bitcoin-qr-code-warning/#3254ef2c6d12
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