BullGuard Mobile Antivirus
Key features:
●Scans all incoming traffic like SMS & MMS messages, Bluetooth, emails and downloads for malicious programs.
●You can launch a scan of your mobile device at any time to ensure it is free from threats
●Automatic over-the-air updates ensure your device is protected against the latest threats
Supported platforms: Windows Mobile 5.0 and higher, Symbian S60 9.x, Symbian UIQ v3.X
Price: $39.95

ESET Mobile Antivirus
Key features:
●Fast signature scanner finds and cleans known threats before they can cause damage. Heuristics engine protects against unknown threats between signature updates
●Scans all accessed files for viruses, including email attachments and files accessed via wireless means such as Bluetooth, WiFi, infrared, GPRS and EDGE
●Block text messages from unknown senders or use black and whitelists to filter your SMS messages.
●Download signature updates on-demand or automatically at pre-set intervals: daily, weekly, or monthly.

Supported platforms: Windows Mobile 5.0, Windows Mobile 6.x
Price: $24.95/yr

F-Secure Mobile Security
Key features:
●Complete, automatically updated security solution for business smartphones.
●Includes firewall, real-time anti-virus and anti-spyware to protect against mobile malware.
●Advanced anti-theft features.
●Remote Lock can lock the phone easily with a single SMS message.

Supported platforms: Symbian S60 3rd and 5th Edition, Symbian UIQ v3.X, Windows Mobile 6.x
Price: $39.99/yr

Kaspersky Mobile Security
Key features:
●Prevent spam and viruses from infecting your phone while you’re surfing the Internet
●Real-time scanning and advanced firewall for 24/7 protection
●Remotely block access to your phone if it is lost or stolen
●Block, clean and find your phone even if your SIM card has been replaced

Supported platforms: Windows Mobile 5.0, Windows Mobile 6.x, Symbian S60 3rd and 5th Edition
Price: $29.95/yr

McAfee Mobile Security
Key features:
●Automatically cleans infections as it finds viruses, worms, Trojans, or other threats
●Keeps confidential information safe and avoid loss of vital data through virus infections or other intrusions
●Examines all e-mail, instant-message attachments, Internet downloads, SMS, MMS, WiFi®, and Bluetooth® transfers for threats

Supported platforms: Windows Mobile 5.0, Windows Mobile 6.x

Norton Smartphone Security
Key features:
●Eliminates text and multimedia spam messages
●Stops cybercriminals from stealing information from your mobile device
●Prevents strangers from spying on you and seeing your private information on public networks
●Detects and removes mobile threats before they can cause you problems

Supported platforms: Symbian S60 3rd and 5th Edition, Windows Mobile 6.x
Price: $29.99/yr

Trend Micro Mobile Security
Key features:
●Secures information against accidental loss
●Improves protection while reducing complexity
●Reduces administration with integrated management
●Maintains mobile worker productivity

Supported platforms: Windows Mobile 5.0, Windows Mobile 6.x, Symbian S60 3rd and 5th Edition

To test this system you can go to this page. Unfortunately this system doesn’t provide absolute security. And it is recommended to use some additional tools. One of them is Liberty Guard 1.47. To use this add-on you should register an account on Liberty Reserve’s site.

Liberty Guard panel is located at the bottom right corner. When you are on real site it will blink green to let you know that you have not opened a fake Liberty Reserve (phishing) web site. According to official source the list of phishing web sites are updated every hour. There is special system that helps you to report new phishing web sites and malicious web sites (Tools > Liberty Guard > Report a phishing website)
Another add-on is IDND 1.5.3

It also places a special panel that tells you whether you are visiting a Traditional Domain Name (green TDN) or an International Domain Name (UN-blue IDN). IDN’s can be used for phishing or spoofing, so suspicious domain names cause an alert box.
As you can seen these add-ons has much in common. Besides there is a number of good alternatives like Netcraft Toolbar, PhishTank SiteChecker, Petname Tool.

Recently Google launched its Public DNS service. But why do we need it? First Google Public DNS is needed to make Web pages load faster. Every time you enter website address in your browser the request is sent to your Internet provider that processes this request. So Google asserts that its DNS will work faster. The second reason to use Public DNS is safety. Malefactors can replace server names cache and direct you to malware sites. Using of Google Public DNS reduces this threat.
On the other hand using of this service will provide Google information about all sites you visit.
To start using this DNS service, just change Internet connection properties to
Preferred DNS: 8.8.8.8
Alternative DNS: 8.8.4.4

Secunia Personal Software Inspector

This application scans scan, detect, checks and secure all software installed on your computer looking for vulnerabilities and gives you direct links to update programs that are older and potentially not secure. This tool analyses EXE, DLL and OCX files and collects all information about installed applications.

OpenDNS

It is free ‘mast have’ service that hastens web surfing through Web content filtering and protects you from phishing. It redirects web traffic through its DNS nameservers. OpenDNS also provides an opportunity of parental control.

GMER anti-rootkit

This free application scans you PC for rootkits and removes them. It is said to be perfect tool for search of hidden processes, services, threads, files, modules, registry keys, inline hooks and drivers.

Netcraft Toolbar

Netcraft Toolbar community is a giant neighbourhood watch scheme. Once the first recipients of a phishing mail have reported the target URL, it is blocked for community members as they subsequently access the URL.

CCleaner

It is free system optimizer and cleaning tool. It can help to find unused system files and allow Windows to run faster. Beside it traces all online activities and has built-in registry cleaner.

I’ve just found this site. Here you can learn about almost any process. This library helped me to detect two new trojans on my PC. You can also visit this page for faster navigation in the library.

To close open ports choose “Traffic Policy” in left column of the window. There is a list of current options. Then press “Add” under the list of options to create new one. Double click on “Any” in “Destination” section will open this window.

Press “Add” and enter “localhost”. The press “OK”. Double click in “Action” section will open this window.

Please choose “Drop” and press “OK”.

To finish operation click on “Service” section and enter a number of port you want to close. That’s all.

When you are surfing the global network uses opens a number of ports. The most of software applications are intended for using of fixed port. As you can see on this picture Interne Explorer uses 80 port. Mail delivery applications such as Outlook and The Bat! use 25 and 110 ports. If you install Emule it will open 4662 and 4672 ports. Thus I computer is not secure because every application can open any port and transmit data by way of it. Besides, any external application also can connect to these ports. For example, I-Worm.MyDoom trojan can infect you PC. It opens 3127 port and hand over your private information. To reduce this threat and to monitor all ports there is some special applications. To reduce such thread you should close ports that you don’t need. There is some ways to it. For example to use Windows Worms Doors Cleaner. It is easy to use but it gives an opportunity to close only 135-139, 445 and 5000 ports. But to set up more reliable protection you should use special applications such as Firewalls. In next posts I’ll describe how to reduce this threat by means of such firewalls as Outpost Firewall, Kaspersky Internet Security, ZoneAlarm PRO, Comodo Firewall and Kerio Personal Firewall
PS Here you can see the list of common ports and to check them.