[joshstrange]

Do you honestly think it is developer's "inconsiderate" behavior that the root cause or even a main factor in the "repeated data breaches"?

[insulfrable]

Partly yes. They certainly have a professional responsibility to write applications that resist well known attacks, such as directory traversal, xss, sqli, etc.

This isn't new, and not knowing how to deal with it is like a builder not knowing how to safely stand up a wall.