Security Question

[logictrap]

I see a lot of these errors in my error log. Are these attempts to hack the site or something else?

mod_security: Access denied with code 403. Pattern match "!(^application/x-www-form-urlencoded$|^multipart/form-data;|^application/x-www-form-urlencoded; charset=UTF-8$)" at HEADER("Content-Type") [severity "EMERGENCY"]

[masterofollies]

403 Forbidden: You don't have permission to access <the file name> on this server.

[logictrap]

Thanks - I don't see a file name listed. What does the 'Pattern match' section mean? Why is it listed as 'Emergency'?

Is it some type of failed attempt to send form data?