Jan Rychter
I commented in a discussion on HN (I know…) titled "When your last name is Null, nothing works".
I wrote that this is terrifying, because it implies that so many computer systems interpret user-supplied data instead of treating it as out-of-band values. No computer system should ever interpret what is in the "last name" field, it should be a sequence of characters only. Every attempt at interpretation is an exploit waiting to happen.
I then read the replies and now I am even more terrified 😳
Niki Tonsky
@jrychter I think it’s a CS classic and even best practice by now. Many JS and Ruby systems (Github included, IIRC) work hoping users will not create usernames like “prototype”, Windows doesn’t allow files named COM etc
Not that I approve it, of course. But it is a solution
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