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How Apple and Amazon Security Flaws Led to My Epic Hacking

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Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#181
post #100

For the people that want to turn on two-factor authentication on their Gmail account, here's how to do it: http://support.google.com/accounts/bin/answer.py?hl=en&t... I highly recommend it. Some of the common misperceptions I see: Myth: But what if my cell phone doesn't have SMS/signal? Reality: You can install a standalone program called Google Authenticator, so your cell phone doesn't need a signal. Myth: Okay, but…

I was reluctant to setup two-factor for a long time, perceiving it to be an unnecessary hassle. Then somebody tried to gain access to some of my accounts through my Apple ID. They were unsuccessful (I don't have any common passwords these days so managing to send a password reset to my GMail wasn't terribly helpful) but it certainly made me paranoid enough to switch. I currently have two-factor setup on two accounts.…

http://goo.gl/fWpqd

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#182

Earlier quoted context omitted.

Since I've been downvoted without a response, let me elaborate on my concerns. I haven't seen the threat of application specific passwords (ASP) addressed properly. If an ASP is sniffed or somehow extracted from a device it seems like it's practically equivalent to a single-factor authentication password. I couldn't determine from Google's docs if an ASP will allow you to change a master password or not. Or if it cou…

I'm kind of wary of the ASP. It feels very backdoorish. And by the very nature of ASP, it is meant to be saved/stored on the computer system.

Me too. It seems to me that since ASP allows me POP/IMAP access to a gmail account, it probably gives me enough access to run the "send a password reset" attack. I can't use that to 0wn the two-factor protected google account, but I can easily use it to 0wn the AppleID/Anazon/eBay/PayPal account using the gmail account for the recovery address…

Off the top of my head, I don't even know if it's possible to ensure my iPhone or GalaxySII is using SSL/TLS for it's POP/IMAP connections (or if an attacker with brief access to my device could switch it to plain-text-passwords then sniff it's authentication on the local wifi).

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#183

Earlier quoted context omitted.

Have you encountered any other sites that allow you to use Google Authenticator to generate OTPs? Part of the reason I think two-factor authentication is a usability burden is because each "identity provider" wants to use its own protocol. Google uses an Android app. PayPal sent me a card. My brokerage has a keychain token available. Other companies use a "soft" RSA token that runs on Windows. But if everyone agreed…

Facebook. See https://www.facebook.com/settings?tab=security&section=a...

As far as I can tell, this offers no way to use Google Authenticator. Only the Facebook for Android app.

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#184
post #85

For the people that want to turn on two-factor authentication on their Gmail account, here's how to do it: http://support.google.com/accounts/bin/answer.py?hl=en&t... I highly recommend it. Some of the common misperceptions I see: Myth: But what if my cell phone doesn't have SMS/signal? Reality: You can install a standalone program called Google Authenticator, so your cell phone doesn't need a signal. Myth: Okay, but…

There's something that bugged me about two-factor the moment I activated it. The application specific passwords are stored in plain-text. How does Google know that it's actually e.g. Chrome accessing my mail with a given application-specific password? If a hacker gets a hold of an old backup of mine, which includes a Pidgin configuration file I forgot to delete, which holds a plaintext password, can he get into my ac…

Two-factor authentication is as secure as you make it.

If you value security more than convenience don't use application specific passwords. Google certainly allows for that by only consuming their services through a secure web interface. Is there another mainstream e-mail provider who supports that?

However, if you would like to use apps, gtalk, pidgin, etc. Google will still let you and it will still be more secure than before (revoke specific passwords, etc.).

If one of your application specific passwords (ASPs) is compromised your e-mail content will be compromised but NOT your account as long as your phone / token generator are under your control, allowing you to recover access by your own means. That is a big difference.

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#186

For the people that want to turn on two-factor authentication on their Gmail account, here's how to do it: http://support.google.com/accounts/bin/answer.py?hl=en&t... I highly recommend it. Some of the common misperceptions I see: Myth: But what if my cell phone doesn't have SMS/signal? Reality: You can install a standalone program called Google Authenticator, so your cell phone doesn't need a signal. Myth: Okay, but…

I was wary to set up 2FA until I learned that you can set it up even without a cellphone or your own computer. You can have the second factor be a voice call, so it can call a landline or dumbphone without an SMS plan. Plus, if you ever lose your phone or cancel your number, you can set up backup phone numbers. I set up my fiancee's phone number as a backup number in case I ever lose my phone.

Someone big got hacked this way recently - the attacker managed to social-engineer a call forwarding change, then used a "landline 2FA auth call" to gain the foothold then needed. (I think it was Cloudflare?)

It's similar to @mat's problem - Amazon assumed the CC last 4 digits was "non identifying", Apple assumed they were.

How much effort do you suppose your phone company expends securing your voicemail or call forwarding? I'll bet it's less than would be considered "industry best practice" for securing your corporate dns records…

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#187
"The disconnect exposes flaws in data management policies endemic to the entire technology industry, and points to a looming nightmare as we enter the era of cloud computing and connected devices."

This disconnect is unfortunately not limited only to tech industry. Every receipt you get while you pay with your credit card offline, will display some part of your credit card number. The crazy thing is that there is no standard for it and everyone picks different numbers! If you collect your receipts and then throw them all at once without destroying them - anybody can put the numbers together.

I would say this is a much bigger problem and has been around here for ages!

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#188
post #72

For the people that want to turn on two-factor authentication on their Gmail account, here's how to do it: http://support.google.com/accounts/bin/answer.py?hl=en&t... I highly recommend it. Some of the common misperceptions I see: Myth: But what if my cell phone doesn't have SMS/signal? Reality: You can install a standalone program called Google Authenticator, so your cell phone doesn't need a signal. Myth: Okay, but…

Myth: Right, but what happens in the very common scenario of my Android phone-- logged into Google with the Authenticator installed-- getting lost / stolen? Surely then 2-factor auth is basically useless? (insert your answer below)

What are you trying to protect against in this case?

If your phone gets stolen and it's logged in to your google mail without a lockscreen pin/code, then yeah - the thief can read your mail, 2fa won't help. They can also run your Authenticator app and see the current 6 digit number, but that's not useful without the password as well.

(I'm not sure how easy it is to extract the Google password from an Android or i phone - I wonder if you can just switch them to non-TLS POP3 or IMAP and have them send a cleartext password over an unencrypted wifi connection?)

Re: How Apple and Amazon Security Flaws Led to My Epic Hacking

#190

For the people that want to turn on two-factor authentication on their Gmail account, here's how to do it: http://support.google.com/accounts/bin/answer.py?hl=en&t... I highly recommend it. Some of the common misperceptions I see: Myth: But what if my cell phone doesn't have SMS/signal? Reality: You can install a standalone program called Google Authenticator, so your cell phone doesn't need a signal. Myth: Okay, but…

Well that answered all my misgivings about 2 factor with Gmail. I'm setting it up now. Thanks!
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