Web servers are vulnerable to hackers who can damage your system by accessing the business through your server through the use of another system. Each server type has its own set of problems. This problem is not constant and can change at any time. Using fingerprint web servers can identify a network (type and version), which hackers can help develop the best strategy to attack.

If you do not know how to configure your web server properly better use of the services of an IT expert. A properly configured web server can allow hackers to access files and directories on the web server. Be sure to check the web server log from time to time to see who or what was the use of your web server. Potentially unwanted programs that can include multiple files without knowing you can connect to your operating system and the only solution is to simply remove them so that your system can function again.
The types of threat:

SQL infection. Database is a collection of all data and is managed by a management system or DBMS database. A business application called Structured Query Language (SQL) is the language most commonly used to store or retrieve data from the database. Hackers can access and modify your data to secure data even without a username and password. Hackers can trick your web applications to accept a trade name fake account so you can order the goods.

Although it can not be responsible for writing the web application can ask your provider to help you take precautions against infection with SQL.

Infection Trojan. If the system does not detect or clean a virus known to be because the scan engine is not updated. Every three months, McAfee has launched a new version of an antivirus. New updates are posted every weekday from Monday to Friday at 18:00 (UTC). You can send it to the lab of McAfee to see if you have a false positive or a real virus.