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What causes an attack on a web server?
Web servers are themselves computers running an operating system; connected to the back-end database, running various applications. Any vulnerability in the applications, Database, Operating system or in the network will lead to an attack on the web server. Vulnerability stack of a web server is given below (source: White hat security)
Which is the best way to detect a DoS attack?
The best way to detect and identify a DoS attack would be via network traffic monitoring and analysis. Network traffic can be monitored via a firewall or intrusion detection system.
How can I detect a denial of service attack?
Network traffic can be monitored via a firewall or intrusion detection system. An administrator may even set up rules that create an alert upon the detection of an anomalous traffic load and identify the source of the traffic or drops network packets that meet a certain criteria. What do you do if you think you are experiencing an attack?
Which is the most common method of attack?
The most common method of attack occurs when an attacker floods a network server with traffic. In this type of DoS attack, the attacker sends several requests to the target server, overloading it with traffic.
How does an attacker redirect you to a malicious website?
An attacker may redirect the victim to malicious websites by sending him/her a malicious link by email which looks authentic, but redirects him/her to malicious web page thereby stealing their data.
How are SQL injection attacks used to deface websites?
SQL injection attacks are used to deface the website. When an attacker finds out that input fields are not sanitized properly, he can add SQL strings to maliciously craft a query which is executed by the web browser.
What causes a denial of service ( DoS ) attack?
An attacker may cause a denial of service attack by sending numerous service request packets overwhelming the servicing capability of the web server, or he may try to exploit a programming error in the application causing a DOS attack. E.g. buffer overflow attack, SYN flooding, HTTP get Request Flooding, Ping of death.