Recently one of my friends asked me to check out if his computer was infected by virus. He suspected because occasionally
computer was shut down automatically when connected to internet. My first thought was
Sasser worm 60 seconds auto count-down. As he uses Windows 98 second edition with IE5,
virus must be a Sasser variant. I'm not network security expert but I know some basic things he must do to protect his home PC. It was a shock when he told me that his 4 years old PC had no protection except McAfee anti-virus.
- Bought in 2000 and no Windows service packs had been applied since then.
- McAfee anti-virus software came with
PC when bought and no updates since then.
- No firewall installed.
- No anti spyware installed.
This is what I did to beef up his PC to
best of my knowledge.
Step #1: Patch
operating system.
The first thing I did was update his Windows 98 to
latest available Windows updates for Windows 98.
- Open Microsoft Windows Update page at http://windowsupdate.microsoft.com/
- Scan
PC to find out what critical updates and security fixes are missing.
- Select, download, and install a selection of updates, especially any Critical Updates.
- Restart
PC after finished.
When you open
Microsoft Windows Update page, click
"Scan for updates" link. The page will suggest what updates are needed based on your Windows version. You should install all Critical Updates suggested by Microsoft.
It took me about one and half hour to complete
above steps.
Step #2: Download, install, and run Spybot to get rid of all spyware.
http://www.safer-networking.org/index.php?page=download
Spybot-S&D is a free anti-spyware software to detect any spyware installed on your PC.
Spyware is any software that is installed on your PC and tracks your online behavior without your knowledge or consent. Spyware generally can
- Track what web pages you are visiting and send these information to advertising companies. This kind of spyware is commonly called adware.
- Track and record your computer activities such as what keys you hit. This is generally called Trojans.
- Change your web browser's home page.
- And more...
After installed Spybot, I immediately scanned my friend's computer and found 166 problems. The first run killed nearly all of them except some memory residents that had to be killed after a reboot.
Step #3: Download and install Kerio Personal Firewall (KPF).
http://www.kerio.com/us/kpf_download.html
Kerio Personal Firewall limited free edition is for home users. After installation, KPF works as
full edition for 30 days, after which it becomes
limited free edition.
You may also try
free ZoneAlarm firewall. Be aware that ZoneAlarm free edition uses a lot of computer memory.
The following is
free ZoneAlarm firewall download link. You hardly can find this download link on ZoneAlarm site because they want you to buy
Pro version which is a much better choice.