The IT Stuff

Denial-of-Service Attack:
In DOS Attack after gaining access to your network, the attacker can do any of the following:

Randomize the attention of your internal Information Systems staff so that they do not see the intrusion immediately, which allows the attacker to make more attacks during the diversion.
Send invalid data to applications or network services, which causes [...]

A buffer overflow, or buffer overrun, is an anomalous(differs from expectation) condition where a process attempts to store data beyond the boundaries of a fixed-length buffer. OR
It occurs anytime the program writes more information into the buffer than the space it has allocated in the memory. In buffer overflow attacks, the extra data may contain [...]

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer resource unavailable to its intended users.
Many DoS attacks, such as the Ping of Death and Teardrop attacks, exploit limitations in the TCP/IP protocols

attempts to “flood” a network, thereby preventing legitimate network traffic
attempts to disrupt connections between two [...]

Anti-Virus and Anti-spyware Protection:
Detects, blocks, and removes viruses, spyware, adware and rootkits.
Network Manager:
Lets you easily fix security issues on your home network from one PC. Provides easy and automatic printer and file sharing across computers on your home network that you trust.
Web Site Safety Ratings:
Adds safety ratings to sites and search engine results based [...]

Antivirus and Antispyware:
Antivirus and Antispyware scan for both viruses and for security risks.
Personal Firewall:
The Symantec Endpoint Protection firewall provides a barrier between the computer and the Internet.
Intrusion Prevention:
The intrusion prevention system (IPS) is the Symantec Endpoint Protection client’s second layer of defense after the firewall.
Proactive Threat Scanning:
Proactive threat scanning uses heuristics to detect unknown threats. [...]