Re: [Full-disclosure] Google open redirect



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On 09/12/2011 20:31, Marsh Ray wrote:
On 12/08/2011 12:37 AM, Michal Zalewski wrote:

For time being, if you make security decisions based on onmouseover
tooltips, link text, or anything along these lines, and do not examine
the address bar of the site you are ultimately interacting with, there
is very little any particular web application can do to save you: you
are just at a significant risk wherever you go. If you take away open
redirectors, a myriad of other, comparable ways to fool you remain,
and can't be fixed easily.

I think reasoning based on this is subtly fallacious and it often
contributes to disagreements between researchers and large vendors. This
is how we got into the state of the web today: bad faith on the part of
browser vendors.

They may be in the minority, but there *are* users out there who know
how to look at the address bar. The security researcher knows this
because he is one of them. I call this group the "competent and
contentious users".

Large vendors are constantly holding bad faith against their userbase.
This may be borne out by large user studies, but I've lost count of the
number of times I've heard actual security improvements shot down
because "typical users" are presumed to be so incompetent and careless
that they will fail to derive a significant benefit from it.

I maintain that design decisions affecting security must be driven by
the needs of the competent and contentious user because if he cannot
achieve effective security in using of the system, then what chance has
the "typical user"?!

Avoiding security improvements because the are perceived as being of
little benefit to type typical user is wrong. Doing so gains nothing for
the typical users, it decreases the security available to competent and
contientious users, and worst of all it actively removes any incentives
for the "typical user" to begin to take responsibility for their own
security.

I think when the "typical user" gets pwned with phishing or malware he
thinks a combination of "stupid Microsoft", "the Internet is out to get
me", and "what did I do wrong?". The vendor implicitly answers: "you did
nothing wrong because this is all too complicated for you to understand,
you should install this additional product to give you better security".
Perhaps this made sense back when the Internet was a toy and the biggest
security risk was a limited-liability credit card number, but today we
have whole populations in places like Iran wondering if their ass is
going to get tortured over something they said on social media.

I think a lot of typical users today are probably wanting to move into
that other category and we should support them in that.

- Marsh


Whilst I agree with what you have said the majority of computer users today are just consumers.
They expect their nice new shiny Win 7 laptop to behave just like their washing machine. Push a button and it does what is expected, they don't
expect to have to understand how it works nor do they expect it to do "bad things" when they are not looking. Occasionally a scam may make head
line news, but the attention span and memory of the average consumer is measured in days or weeks not a lifetime.

The marketing blurb from software providers be that OS or application does nothing to dispel this expectancy. In fact the marketing blurb does
it's best to hide any possibility of detriment from using the product from the user.

The user does blame MS or the Internet and very rarely their own incompetence in using the computing device. Why? because all the marketing
blurb for such devices avoids any indication that using said device may result in the compromise of identity or bank account.

Where does the advertising for computing devices state that the system is flawed? Nowhere. The consumer is given this image of a wonderful
device doing wonderful things. A device that would never bend them over when they least expect it.

The solution is either make the Internet and computers totally secure, or educate the user that the system, be that OS, application or Internet
is broken and they need to be on their guard against what may happen for every click they make.

I like to think I am somewhat competent. The last virus I had, the last compromise I faced was the Saddam virus on my Amiga. My confidence
doesn't make feel I that I will never be owned or compromised. There are far smarter people out there than I. The average consumer does not
think this way, they are drunk on the kool aid.

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