| Port No | 4653 |
| Service Name | Cero |
| RFC Doc | 0 |
| Protocol | TCP |
| Description | Cero Spam uses the Captcha method. This method displays an image in your form and ask the user to fill in a field with the showed code. The image looks like this. When your form is submitted its content is sent to Cero Spam where the code is validated. This filters out all spambot generated content. |
| Reference Link | More Information |
| Attack | Name:Cero 1.0 Backdoor Cero b1 is a Trojan that opens up a backdoor program that, once installed on a system, permits unauthorized users to remotely perform a variety of operations, such as changing the registry, executing commands, starting services, listing files, and uploading or downloading files. Cero b1 uses port 4653 via TCP. To implement Cero Spam solution you just need to: 1) create a new form item (log in or sign up) in the admin area of Cero Spam; 2) change the "action" property of your form to a URL we provide; 3) add a new text field to your form (where the user will fill in the code appearing in the security image) and a small portion of code above it. |
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