小心背大黑包靠近你的人

feellikestar

寿桃76 发表于 16-6-2016 09:24
有点儿耸人听闻，读智能卡的信息没有那么容易，尤其是这种涉及到钱的芯片。里面的信息一般都经过了加密处理 ...

ezlink 的钱被刷了，很容易被发面，每天大家都在用，都在看里面剩多少钱。

但不是每个每天都在查自己卡里还剩多少钱的

feellikestar

鞋子 发表于 16-6-2016 13:30
另外多张卡在钱包里叠在一起的时候 刷不成功的 互相干扰

那个是因为一般扫描设备的功率比较低，要节省能源。如果扫描设备功率比较高，这个自然就能分辨出来

walterso

其实不用怕，你2张pay wave 的卡放一起就好。。。。pay wave 不但方便，而且信用卡，有时候还有些小折扣，大件可以分期付款。

鞋子

feellikestar 发表于 16-6-2016 14:05
那个是因为一般扫描设备的功率比较低，要节省能源。如果扫描设备功率比较高，这个自然就能分辨出来
...

信号互相干扰不是功率大能解决的。。。。

feellikestar

鞋子 发表于 16-6-2016 22:52
信号互相干扰不是功率大能解决的。。。。

错了，信号弱的时候，很难分辨，但放大后就可以看出差别。就好像用放大镜看东西， 你就能看到细小的差别

加肥猫

显然魔高一尺道高一丈，这样的技术攀比应该是无时不刻正在进行，希望银行和政府的技术能保持上风吧  总之想起来就好可怕

一壶漂泊

真假的，nfc是感应式，线圈的输出功率很小，所以只能贴得很近，你接收器功率再大有什么用？而且就算收到了信息应该是加密的吧，个人猜测

维妮公主

http://www.straitstimes.com/busi ... xperts-in-singapore


楼主说的事是以前在台湾发生的，可是本地报纸早就出来辟谣了。

而且只要能证明不是你用的是被别人盗刷的，第一时间报警，你的钱是安全的。

我觉得楼主有点网上看到风就是雨了。

维妮公主

Contactless cards not a security risk, say experts in Singapore。



SINGAPORE - Banking figures here have reassured customers using contactless or "tap-and-go" cards, such as payWave, that there is no security risk despite a major scare in Hong Kong.

They say this type of payment is very well-protected by security measures, and that card fraud rates here are still very low.

The Hong Kong Monetary Authority (HKMA) recalled some cards last week, after news reports said contactless cards contained more personal information than was allowed. No instances of fraud were reported.






  
Demonstrations by the media there showed information, including card number, expiry date and the holder's name, could be obtained from contactless cards issued by several banks, using near field communication (NFC) applications installed on mobile phones.

The HKMA ordered at least seven banks - including DBS Hong Kong and OCBC Wing Hang Bank - to recall cards. The reports are the latest in recent years to question contactless cards' vulnerability to NFC skimming, or "electronic pickpocketing".






Card numbers and expiry dates can be read from contactless cards issued in Singapore, using apps that can be downloaded for free. The worry is that the information will be used for card scams.

But contactless cards - most commonly those with the Visa payWave or MasterCard PayPass feature - have been largely fraud-free so far, Association of Banks in Singapore director Ong-Ang Ai Boon told The Straits Times.

"The overall credit card fraud rate is about 0.02 to 0.03 per cent, of which 80 to 90 per cent of the cases are card-not-present situations, usually during overseas online transactions. On this front, we advise consumers to shop online only on 3D-Secured websites."

3D Secure refers to "three-domain" security, an online authentication protocol covering the merchant, card issuer and the Internet.

Visa country manager for Singapore and Brunei Ooi Huey Tyng said that there has been no electronic pickpocketing fraud case reported since payWave cards were rolled out in Singapore, and a mandate was introduced in Asia in April this year to ensure holder's name transmission is not possible on newly issued contactless cards.

"(Electronic pickpocketing) is complex to execute in reality, and the data contained on the cards offers very limited potential for fraud," Ms Ooi said.

For NFC pickpocketing to work, the phone would have to be right on top of the card, and the three-digit CVV security number would not be detected in any case.

PayWave cards are also protected by cryptographic security, which generates a different authentication code for every contactless transaction, along with VisaNet at the back-end, which analyses transactions in real time for possible fraud.

A MasterCard spokesman said its cards do not contain holder's names in its contactless application on chips, adding that data captured by an NFC app is not enough for card forgery or online transactions.

Ms Grace Cheng, who co-founded credit card adviser GET.com, added: "Visa and MasterCard holders are also protected by a $100 cap per contactless transaction."

In any case, HKMA's concerns are not applicable in a local context, Mrs Ong said. "As far as we see, it is a matter of personal data protection - a matter of privacy, not security. That is a mandate by HKMA, but there is no similar requirement in Singapore yet," she said.

When contacted, the Monetary Authority of Singapore (MAS) did not comment on whether it shares HKMA's concerns, but stressed existing measures have proved effective. It added: "MAS will continue to monitor the situation, and if necessary, consider additional measures to protect consumers."

No further enhancement to credit card security is being discussed, Mrs Ong said, even as the financial industry continues to work towards creating a cashless consumer economy.

Ms Cheng said: "The tap-and-go payment makes small purchases a breeze for consumers, and also helps raise business productivity by reducing customer servicing time and manpower reliance.

But while card security is tight, "we strongly recommend that consumers stay vigilant and maintain a good habit of checking their credit card statements regularly.''

早就辟谣过了。 楼主好好看！

千股涨停

不是搞这方面的，大概猜一下，权当娱乐。

这就相当于两个人距离远说话听不见，然后其中一个人A就拿个大喇叭，相当于大黑包，B能听见了，也能回复了，可是B并没有使用喇叭，所以A还是听不见呀。

NFC近场通信，卡发射的无线信号，2cm外就没有了，大黑包功率再大，也不能收到不存在的信号吧。