![Popular open source software is more secure than unpopular open source software, because insecure software becomes unpopular fast. [That doesn't happen for proprietary software.]](../sites/all/themes/drupal4hu/images/bg-center/bg-center_4.png)
Opera inspected a few million webpages. 4.13% passed validation, 70% had a DIV tag, 80% had a TABLE tag. A healthy number of those divs are not for positioning either, while border made it to the top ten CSS properties, margin and padding are the 11th and 12th, position is the 17th. More pages had JS than DIVs -- 74.58%. While Flash is used on the third of pages, XMLHttpRequest is used a magnitude less, 3.2% of pages.
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9 out of 10 developers I talk to don't know how to build valid or good sites. They don't know the basics of security (or why they are important). They don't understand why standards matter.
I was talking to someone going to college to learn web development. She showed me how her teacher was showing her how to do table based layout.
Another example was when I was talking to someone with a masters degree in computer science who thought using htmlspecialchars($text) in PHP was enough to avoid XSS attacks.
In each case this is what they were taught by someone they thought knew what they were doing. They simply produced what they were taught to do. The system is broken.
I spoke to somebody on a web/multimedia type course at a local college today: he had been given an assignment to develop a website in Dreamweaver MX. Four weeks later, he was introduced to HTML...
validator.w3.org
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