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Ovid's Law of Security
Allowing a known security weakness into a program is automatically a security hole, regardless of whether or not it can be exploited.
Okay, so it's a bit wordy, but it's true. I've seen this too many times to think otherwise. I was bit by this a few months ago. I was told that I had to get a page up fast. I had to write a program to regularly grab financial data from some files that are sent to us via ftp. Then, this data is stored in a database and later served on a page.
The program that actually gets the data from the database was thrown together in a few hours. Since I was rushed, I was lazy (the bad lazy, not the good) and put the username and password for the database into the script. Hey, this is in the cgi-bin directory and no one will ever see it. Naturally, a couple of weeks later, someone had to move the site and misconfigured the server. Instead of running the script, it was being sent to the browser.
I knew it was a weakness and it's a trivial matter to move the username and password to a config file outside of the Web root. I whine and moan when I see anybody else do this, yet I was hoist on my own petard.
Ovid's Law of User Interfaces
No matter how well thought out the interface, if it confuses the user, it's a bug.
In tilly's homenode, he provides a link to the the Interface Hall of Shame for Lotus Notes. I have had the, um, pleasure of working with this piece of crud. One of the "features" of the program is in the email portion. To save space, copying any email to another folder does not copy the email. It creates an alias to the original email. Deleting either the original or the alias results in both being deleted. I can't even begin to tell you how many times I heard language that would make George Carlin blush when people discovered this "feature".
One of the curious side effects of this is that whenever I received email from a coworker, it would often be copied back to themselves. Thus, they could delete their "sent" mail safely, since they couldn't copy important sent email to another folder. Read the Hall of Shame link. It's hilarious. What's worse is the "defense" given by many of the Lotus Notes developers. Invariably they scream that the users needed to be trained. While admittedly, Bloatus Notes is much more than an email client and any company that uses it solely for that purpose is wasting their money, users shouldn't need to be sent to a training class for something as trivial as email!
Update: Just gotta add this. In case you're not entirely sure what Lotus Notes is, here is how the developers describe it:
Now, that clears things up, right? :)
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