16th Apr 2010
Security on Internet: the trust market – Introduction
Disclaimer:
this article is the first of several whose goal is to answer, in simple terms, these questions:
When is my internet connection secured? What means “secured” anyway? Can I safely send personal information? My credit card’s number as well?
I recently thought about the fact that securization on Internet is hardly understood even by some computer scientists, so let’s not talk about casual users… Yet we work for the casual user, not for us, so in this article, I will try to explain how it works and why.
I will focus on web examples (what you see in your web browser: Mozilla Firefox, Konqueror, Safari, Internet Explorer, Google Chrome…) as it is probably the most common, hence most understandable, internet usage.[1]
To understand my point, you have probably seen (though maybe did not take care about) details showing when a shopping/bank website was secured. In Mozilla Firefox for instance, you would get these two signs:
- a lock logo at the bottom right of the page
- a blue band in the address bar with the name the website has been “certified” under[2].
Oppositely badly certified websites will cause your browser to generate a warning.

So what is all this shit? How are connection secured? This article will try and explain this in three posts:
- In the current post, I explain why the web cannot absolutely be trusted basically.
- In the next post, I will describe the common solution to the problems and dangers brought to light in the first post.
- At last I will give some good practices about “how to use the web safely”.
Disclaimer:
this article is the first of several whose goal is to answer, in simple terms, these questions:
When is my internet connection secured? What means “secured” anyway? Can I safely send personal information? My credit card’s number as well?
I recently thought about the fact that securization on Internet is hardly understood even by some computer scientists, so let’s not talk about casual users… Yet we work for the casual user, not for us, so in this article, I will try to explain how it works and why.
I will focus on web examples (what you see in your web browser: Mozilla Firefox, Konqueror, Safari, Internet Explorer, Google Chrome…) as it is probably the most common, hence most understandable, internet usage.[1]
To understand my point, you have probably seen (though maybe did not take care about) details showing when a shopping/bank website was secured. In Mozilla Firefox for instance, you would get these two signs:
- a lock logo at the bottom right of the page
- a blue band in the address bar with the name the website has been “certified” under[2].
Oppositely badly certified websites will cause your browser to generate a warning.

So what is all this shit? How are connection secured? This article will try and explain this in three posts:
- In the current post, I explain why the web cannot absolutely be trusted basically.
- In the next post, I will describe the common solution to the problems and dangers brought to light in the first post.
- At last I will give some good practices about “how to use the web safely”.
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