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BitDefender Antivirus 2010 provides advanced proactive protection against viruses, spyware, phishing attacks and identity theft, without slowing down your PC.

Confidently download, share and open files from friends, family, co-workers - and even total strangers
-Protects against viruses and other malware using industry-leading technology NEW
-Scans all Web, e-mail and instant messaging traffic in real-time
-Provides an unmatched detection rate of new threats based on two different proactive technologies
-Blocks spyware programs that track your online activities

Protect your identity: shop, bank, listen and watch, privately and securely
-Blocks web pages that attempt to steal your credit card data
-Prevents personal information from leaking via e-mail, Web or instant messaging NEW

Guard your conversations with top-of-the line encryption
-Instant Messaging Encryption keeps your conversations private on Yahoo! and MSN Messenger

Play safely, play seamlessly
-Reduces the system load and avoids requesting user interaction during game play

Get fine-tuned performance from your computer
-Optimized scanning technology skips safe files for better scan speed and lower system load
-Laptop Mode prolongs battery life

Let professionals solve any security issues
-Assistance with common issues built directly into the product
-Free technical support for the entire duration of the product license

Automatic defragmentation feature provided by Diskeeper.
-Defrag your hard drives automatically, making your computers run faster.

antivirus

Antivirus (or anti-virus) software is used to prevent, detect, and remove malware, including computer viruses, worms, and trojan horses. Such programs may also prevent and remove adware, spyware, and other forms of malware.

A variety of strategies are typically employed. Signature-based detection involves searching for known malicious patterns in executable code. However, it is possible for a user to be infected with new malware in which no signature exists yet. To counter such so called zero-day threats, heuristics can be used. One type of heuristic approach, generic signatures, can identify new viruses or variants of existing viruses for looking for known malicious code (or slight variations of such code) in files. Some antivirus software can also predict what a file will do if opened/run by emulating it in a sandbox and analyzing what it does to see if it performs any malicious actions. If it does, this could mean the file is malicious.

However, no matter how useful antivirus software is, it can sometimes have drawbacks. Antivirus software can degrade computer performance if it is not designed efficiently. Inexperienced users may have trouble understanding the prompts and decisions that antivirus software presents them with. An incorrect decision may lead to a security breach. If the antivirus software employs heuristic detection (of any kind), the success of it is going to depend on whether it achieves the right balance between false positives and false negatives. False positives can be as destructive as false negatives. In one case, a faulty virus signature issued by Symantec mistakenly removed essential operating system files, leaving thousands of PCs unable to boot.[1] Finally, antivirus software generally runs at the highly trusted kernel level of the operating system, creating a potential avenue of attack.[2]

In addition to the drawbacks mentioned above, the effectiveness of antivirus software has also been researched and debated. One study found that the detection success of major antivirus software dropped over a one-year period