The Anonymizer service allows you to surf the web without revealing any personal information.
If you're worried about a Java attack, the real threat may be that a hacker will exploit your fear to scare you into revealing your ID and Password. Your best defense is to understand more about the Denial of Service attack.
The Eicar Standard AntiVirus Test File
provides a safe way to verify your antivirus software.
Create a new file on your hard drive called EICAR.TXT,
and Copy and Paste the following string into it:
Save the file, then rename it to EICAR.COM. Please be assured that this is NOT a Virus, but whey you scan this file your software should report that it found the EICAR-STANDARD-AV-TEST-FILE virus.