Network Security Software and Utilities

Tools to Defend Your Computer or Network from Hackers or Malicious Programs

woman using laptop on sofa

Blend Images/Getty Images

For most people, following the basic rules of Internet safety — using unique and secure passwords, keeping your system updated, using a firewall, avoiding clicking on things you're not sure about — will prove enough of a reasonable defense against hackers and malware.

Tools and Applications

Sometimes preventative medicine isn't good enough and you need more specialized tools to treat your infection, here are the top hacking defense tools to protect you and your computer.

ZoneAlarm Pro

ZoneAlarm is freely available and is better than nothing, but ZoneAlarm Pro 5 provides significantly more protection and is worth the added expense. Zonelabs has also added more security functionality such as the quarantining of malicious email attachments and increased protection for your privacy while accessing the Web.

Hidden Object Locator

Easily find hidden NetWare NDS objects in your tree. This zip archive contains two files: the tool and a text document with instructions.


Ippl is a daemon that logs IP packets sent to a computer. It runs in the background and displays information about the incoming packets. You can specify the criteria that determines what packets should be logged and what packets should be ignored.

Traffic Anomaly Detector and Guard

Cisco's Traffic Anomaly Director and Guard detects and defeats the most complex distributed denial-of-service attacks, preserving business continuity and protecting your most valuable corporate assets.

Securify SecurVantage

Securify SecurVantage is an automated security system that helps customers to rapidly generate business-driven security policies, monitor networks for compliance and produce relevant information.

NFR Sentivist IPS

Sentivist IPS provides organizations with highly accurate attack prevention. The system offers industry unique features such as Confidence Indexing, customization capabilities and minimal impact design. Sentivist IPS also supports central management of distributed environments in both small- and large-scale enterprises.

ISS RealSecure Server Sensor

RealSecure Server Sensor provides automated, real-time intrusion protection and detection by analyzing events, host logs and inbound and outbound network activity on servers to prevent malicious activity from damaging critical assets.


Scanlogd is a TCP port scan detection tool, originally designed to illustrate various attacks an IDS developer has to deal with. Thus, unlike some of the other port-scan detection tools on the market, Scanlogd is designed to be safe to use.

Folder Lock

Folder Lock is a fast file-security software that can lock, hide or encrypt any number of files, folders, pictures and documents in seconds. Files are protected with a password of your choice.

GIANT Anti-Spyware

GIANT Anti-Spyware searches for and destroys existing spyware on your computer and it alerts you when potential dangers arise, stopping most spyware before it can even install. This prevention is the key to keeping your computer clean and your personal information personal.