This problem is arising mainly because of “mod_security”; a web application firewall. All the cPanel hosts use the “mod_security” feature.
So What is mod_security?
ModSecurity is an embeddable web application firewall. It provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring and real-time analysis with no changes to existing infrastructure. [...]

For MySQL 5.x is Monday Intevydis demo video released a new exploit.
Demo for the CANVAS exploit new shows in VulnDisco exploit package.

Microsoft is investigating reports of limited, targeted attacks against customers of Internet Explorer 6, using a vulnerability in Internet Explorer. This advisory contains information about which versions of Internet Explorer are vulnerable as well as workarounds and mitigations for this issue.
Our investigation so far has shown that Internet Explorer 5.01 Service Pack 4 on Microsoft [...]

Writing in the performance of PHP you want to give a few tips about how , so that your visitors a better experience for and server (your money) you will not waste site / function can encode.
Here are a few tips itemized:

 Xdebug php scripts really is a useful tool to assess. Contact offers information about scripts features.
We feature local server is active xdebug us about the script or process all the functions of time and provides detailed information about.
As an example, a script might look very good in terms of appearance or functionality but is very [...]