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Post a boarding pass on Facebook, get your account stolen

michalspacek.com

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Re: Post a boarding pass on Facebook, get your account stolen

#171
post #143

Earlier quoted context omitted.

I know very few women that have done that TBH.

Maybe you just didn't realize it, because it isn't very common to see someone's full name? It was very much the norm until the 80s-90s, and even today I think the majority of women still go that route. I just spent a couple minutes searching Facebook to sanity check myself, and so far all of the women I'm friends with who are under 30 and married have done it.

[deleted]

Re: Post a boarding pass on Facebook, get your account stolen

#172

It's not just posting photos that can cause this kind of trouble. I get a lot of email intended for other Doug Webbs sent to my gmail account, with variations on the presence/location of periods, or CC'd with another gmail account that's the same but with numbers on the end. For a while I was getting boarding passes from a major airline for a Doug that was frequently flying up and down the US west coast. Those emails…

Ha... I just checked my Other Dougs folder. On Aug 4, I got an email from myidentityassist.com saying that "I" reported a case of identity theft, and that "my" Royal Bank of Canada credit card has been blocked from further use. Then on Aug 5 I got an email confirming an order from a Pizza Hut in Kingston ON, Canada, using the same variation on my email address.

This is one of my repeat-offenders. I see a lot of email out of Kingston with this same variation on my email address, and I've tried many times to reply and get people to tell him he's using the wrong email address, but to no avail. This has been going on for years.

Re: Post a boarding pass on Facebook, get your account stolen

#173
post #93

Earlier quoted context omitted.

"Your mother's maiden name has numbers in it?" (bank teller, DMV person, etc.) "You .. give real answers for your security questions? Seriously?" I do the same thing, real birthday if it's financial or employee related, but for everything else, I'm a few years older on another date. I often pick a security question that I don't have a real legit answer to as well.

I never quite got this "mother's maiden name" thing. Isn't your mother's maiden name... your mother's current name, minus the extra surname she got when she married? Why is this treated as a hard-to-discover information?

Or for all the women in my family... their maiden name is their current name, because none of them change their name when they get married.

Re: Post a boarding pass on Facebook, get your account stolen

#174
post #141

Earlier quoted context omitted.

Sounds like a "correct battery horse staple" would fit the bill

Or use a memorable phrase from literature. > This was not the last encounter between Bobby Shaftoe and Goto Dengo

Nope. If a phrase from literature is “memorable”, it’s guessable.

The logic of passwords is simple, once you realize that all humans are terrible random number generators.

When you allow any part of your password to be chosen by a human, i.e. yourself, you have to assume that the human-chosen part is known to an attacker. The solution is to generate passwords with enough random bits to satisfy current demands. And by “generate” I of course mean to allow a real number generator (either a computer, or dice, or anything really random; i.e. something a casino would accept) to choose the password for you. Without any restrictions except a desire to minimize length, you get the classic unmemorable 0vT2GVlncZ4pZ0Ps-style passwords. If you add the restriction “must be a sequence of english words”, you get xkcd-style “correct horse battery staple” passwords. Both are fine, since they contain enough randomness not generated by a human.

But if you yourself choose, either old-style “Tr0ub4dor&3” or passphrase “now is the time for all good men”-style, you have utterly lost, since nothing has been randomly chosen, and “What one man can invent, another can discover.”.

Note: this also applies if you run a password generator and choose a generated one that you like. Since you have introduced choice, you have tainted the process, and your password now follows an unknown number of intuitive rules (for instance, there was a story here on HN some time ago about how people prefer the letters in their own name over other letters of the alphabet), and these rules can be exploited by an attacker.

Re: Post a boarding pass on Facebook, get your account stolen

#175
post #146

Earlier quoted context omitted.

How are they supposed to know you use one?

Not that they can really know, but most I've seen is that they disable pasting anything into the website, effectively making banking super slow for us with password managers and long passwords. Fortunately, my bank doesn't disable pasting (Banc Sabadell in Spain). Instead the password is restricted to maximum 6 numbers for login. Yay banks!

Yeah, I just disable their disablement. Super annoying.

Re: Post a boarding pass on Facebook, get your account stolen

#176
post #40

Earlier quoted context omitted.

> My typical answer for a security question is something like "39arsrc uyrsrsaulsr8832r" and that's saved in a password manager The problem with this is that the "security" question will often be asked over the phone. At this point an answer of "Oh I just mash the keyboard for those" is probably going to get an attacker access to your account..

But the attacker kind of has to know the answer is gibberish from the bat, otherwise they'd either guess or pretend to not remember a real answer, which is noticeably different from saying something like "oh, that's 30 random characters but I don't have the note with me right now".

Here is how it would go... attacker gives a real answer, support says no that isn't it. Attacker goes, "oh, sometimes I give fake answers for the question... is it a really long string of characters?"

Or they could go through a few things like that, always giving the excuse that they give false answers until they stumble on the right one.

Re: Post a boarding pass on Facebook, get your account stolen

#177
post #11

And this is also why I almost never give my real birth date when registering on websites (except on financial websites or websites where I'm legally obligated to) and I never ever give real answers to the security question.. My typical answer for a security question is something like "39arsrc uyrsrsaulsr8832r" and that's saved in a password manager Security questions weakens the security of an account, they are easil…

"Your mother's maiden name has numbers in it?" (bank teller, DMV person, etc.) "You .. give real answers for your security questions? Seriously?" I do the same thing, real birthday if it's financial or employee related, but for everything else, I'm a few years older on another date. I often pick a security question that I don't have a real legit answer to as well.

I think the best bet is to provide an actual name in that field, just not the real one. Grab a list of the surnames and pick one at random. Bonus if you hyphenate two.

Re: Post a boarding pass on Facebook, get your account stolen

#178

Earlier quoted context omitted.

The search space for city names is tragically finite. There are ~35,000 cities and towns in the U.S., but if you start weighting those by populating (and birthing hospitals and centres), you're going to reduce that count considerably. https://www.reference.com/geography/many-cities-united-state...

Yes but if a system allows you to bruteforce this you probably have bigger problems

The overall risk runs a few different ways. One is that you yourself will bee at risk, another is that there will be a high number of compromises.

There are about 300 in the U.S. of over 100k population (corollary: the other 34,700 locations have fewer than 100k people each, or are at most 10% of the population). A 1/300 chance of cracking a security question on any given transaction is pretty good odds. Particularly if the crack is then reusable.

Another 10% of the U.S. population (roughly) lives in the 10 largest cities alone. That's a 1% likely success rate based on just ten values.

The point being that "legitimate sounding but fabricated" may still not be a particularly good option.

Re: Post a boarding pass on Facebook, get your account stolen

#179

Earlier quoted context omitted.

Someone has the idea behind challenge/response. You don't have to answer the challenge with a 100% truthful, legitimate, accurate response, because the point is to NOT provide an answer that could be guessed by framing the response in truth, or even reality. So long as you've picked one that matches with what you've preseeded, use a random word/phrase as your response. q: What is the name of your favorite teacher? a:…

Yeah, but the key is you need to be able to remember it. Sure, you could store it somewhere, but often times the reason you are needing to use it is because you don't have access to your normal system (computer, phone) that you use to login with.

I don't recall the last time I used secret answers to get into anything. I don't perceive it as a valid way to get into an account. But the option cannot be refused... so to me it's just a security risk.
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