Antivirus software are computer programs that attempt to identify, neutralize or eliminate malicious software. The term "antivirus" is used because the earliest examples were designed exclusively to combat computer viruses; however most modern antivirus software is now designed to combat a wide range of threats, including worms, phishing attacks, rootkits, trojan horses and other malware. Antivirus software typically uses two different approaches to accomplish this:
* examining (scanning) files to look for known viruses matching definitions in a virus dictionary, and
* identifying suspicious behavior from any computer program which might indicate infection.

The second approach is called heuristic analysis. Such analysis may include data captures, port monitoring and other methods.
Most commercial antivirus software uses both of these approaches, with an emphasis on the virus dictionary approach. Some people consider network firewalls to be a type of antivirus software, however this is not correct.

a-squared Free Emsi Software - 22.02MB (Freeware) Emsi Software provides the Malware scanner a-squared Free completely free of charge for private use. It is a full tool to clean your computer from Malware. Not only Spywares, as detected by classic Anti-Spyware programs, but also especially Trojans, Backdoors, Worms, Dialers, Keyloggers and a lot of other destructive pests, which makes it dangerous to surf the web.

Ad-aware SE Lavasoft - 20.23MB (Non-Commercial Freeware) Antispyware gratis buatan LavaSoft yang menggunakan teknologi Code Sequence Identification (CSI) yang bisa mendeteksi Spyware baru dan bisa memblok pembajak browser. - Ad-Aware provides protection from known Spyware including: Data-mining, aggressive advertising, Parasites, Scumware, selected traditional Trojans.

AVG Anti-Spyware Grisoft Inc - 11.84MB (Shareware) Antispyware programs offer insufficient protection against urgently growing threats like Trojans, Worms, Dialers, Hijackers, Spyware and Keyloggers. That's where the protection of ewido anti-spyware begins and supplements existing security applications to create a complete security system - because only a complete security system works effectively.

CWShredder Trend Micro Inc - 520KB (Freeware) CWShredder finds and destroys traces of CoolWebSearch. CoolWebSearch is a name given to a wide range of different browser hijackers. Though the code is very different between variants, they are all used to redirect users to coolwebsearch.com and other sites affiliated with its operators.

Hijack This Trend Micro Inc - 793KB (Freeware) Tools gratis yang sangat bagus sekali untuk membunuh virus, spyware yang berada di memori dan loading di startup anda serta menempal pada OS dan browser komputer anda. - In depth tool for scanning your computer for Spyware. HijackThis scans areas of your registry and hard drive and returns a log of items which it detects.

Download Rootkit Revealer 1.71Rootkit Revealer 1.71 Microsoft SysInternals - 226KB (Freeware) RootkitRevealer is an advanced root kit detection utility. It output lists Registry and file system API discrepancies that may indicate the presence of a user-mode or kernel-mode rootkit.

Spybot Search & Destroy PepiMK Software - 9.13MB (Freeware) Antispyware gratis yang paling banyak dipakai orang saat ini karena mudah dan simple. Tersedia juga versi mobile (ponsel) utk OS Symbian & WIndows mobile dan juga support 25 bahasa di dunia. - Search & Destroy can detect and remove spyware of different kinds from your computer.

SpywareBlaster Javacool Software - 2.45MB (Non-Commercial Freeware) Spyware, adware, browser hijackers, and dialers are some of the fastest-growing threats on the Internet today. By simply browsing to a web page, you could find your computer to be the brand-new host of one of these unwanted fiends!

SuperAntiSpyware SUPERAntiSpyware - 5.64MB (Freeware) SUPERAntiSpyware is the most thorough scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!

Windows Defender Microsoft Corp - 4.95MB (Freeware) Antispyware Microsoft yang hanya bisa digunakan pada Windows XP SP2. - Microsoft Windows Defender (formally known as Windows AntiSpyware) is a security technology that helps protect Windows users from spyware and other potentially unwanted software. Known spyware on your PC can be detected and removed.

WinPatrol BillP Studios - 675KB (Freeware) As a multi purpose support utility, WinPatrol replaces multiple system utilities with its enhanced functionality. WinPatrol Plus provides easy to understand descriptions of over 16,000 programs. As a robust security monitor, WinPatrol will alert you to hijackings, malware attacks and critical changes made to your computer without your permission.

Firewalls & Internet Security

AxCrypt - Axantum Software - 1.11MB
AxCrypt is a free and easy to use open source strong file encryption for Windows 95/98/ME/NT/2K/XP, integrated with Windows Explorer. Encrypt, compress, decrypt, wipe, view and edit with a few mouse clicks. Cryptographic primitives are AES-128 and SHA-1.


Comodo Firewall - 9.09MB (Freeware)
Comodo has put firewall through all kinds of sophisticated tests to ensure its firewall powerful enough to ward off these attacks with default settings. No other firewall has had to work this hard.


KeePass - 1.27MB (Open Source)
KeePass is a free/open-source password manager or safe which helps you to manage your passwords in a secure way. You can put all your passwords in one database, which is locked with one master key or a key-disk. So you only have to remember one single master password or insert the key-disk to unlock the whole database.


Microsoft Baseline Security Analyzer - Microsoft Corp - 1.31MB (Freeware)
Microsoft Baseline Security Analyzer (MBSA) 2.0 is an easy-to-use tool that helps small and medium businesses determine their security state in accordance with Microsoft security recommendations and offers specific remediation guidance.


Outpost Firewall Free - Agnitum Ltd - 2.50MB (Freeware)
Outpost Firewall gives peace of mind from any threats by cookies, banner ads, e-mail viruses, backdoors, spyware, crackers, adware, and virtually every other Internet danger. Unlike other personal firewalls, Outpost starts protecting against all kinds of internal and external attacks as soon as it's installed.


Password Safe - Rony Shapiro - 1.77MB (Open Source)
Password Safe is an Open Source (free) tool that allows you to have a different password for all the different programs and websites that you deal with, without actually having to remember all those usernames and passwords.


Download PeerGuardian 2.0 Beta 6cPeerGuardian - Phoenix Labs - 1.60MB (Open Source)
PeerGuardian 2 is Phoenix Labs' premier IP blocker for Windows. PeerGuardian 2 integrates support for multiple lists, list editing, automatic updates, and blocking all of IPv4 (TCP, UDP, ICMP, etc), making it the safest and easiest way to protect your privacy on P2P.


Norton Internet Security - Pelindungan terbaik dari Norton terhadap gangguan virus & spyware ketika anda browsing dan didukung oleh Yahoo! - Paket lengkap untuk menghalau semua gangguan komputer ketika berinternet.


Download Sunbelt Kerio Personal Firewall 4.5.916Sunbelt Kerio Personal Firewall - 6.27MB (Non-Commercial Freeware)
Kerio Personal Firewall (KPF) helps users control how their computers exchange data with other computers on the Internet or local network. Kerio Personal Firewall is a necessity for all desktop computers connected to broadband Internet, using DSL, cable, ISDN, WiFi or satellite modems.


Download Sygate Personal Firewall 5.6.2808Sygate Personal Firewall - Sygate Technologies - 8.80MB (Freeware)
Free for personal use, Sygate Personal Firewall provides best of breed security in a user friendly interface, protecting your PC from hackers, trojans, etc.


TrueCrypt - TrueCrypt Foundation - 1.49MB (Open Source)
TrueCrypt is a software system for establishing and maintaining an on-the-fly-encrypted drive. On-the-fly encryption means that data are automatically encrypted or decrypted right before they are loaded or saved, without any user intervention.


Download ZoneAlarm Free 7.0.462.0ZoneAlarm - Mirror Link - Zone Labs - 39.79MB (Non-Commercial Freeware)
Firewall + antivirus + antispyware (tersedia versi gratis & versi trial) - ZoneAlarm is an easy-to-use firewall that blocks hackers and other unknown threats. This free version is for non-commercial use only.