Most people do not realize the number of issues the industry faces. Even the best antivirus software can be affected by issues. While some issues are minor and can be resolved quickly, some are more serious.

One of the main issues is that antivirus-signature security does not cover a wide range of threats. When new viruses are discovered they take a while before antivirus companies can develop and release new anti-virus updates. They have to wait until the virus is identified by their software and then sent to be examined.

In the meantime the virus is likely to spread and it’s quite likely that dozens or even hundreds of computers will be infected by the new virus. It may also be transmitted to other networks. To be efficient, anti-virus software must to be able recognize and eliminate these infections quickly. This means that heuristic or behavior analysers are more effective than simple signature detection.

Incompatibility is another issue. While the majority antivirus software developers put much emphasis on developing quality products and give a lot of focus to fixing bugs, the reality is that sometimes, multiple antivirus programs can result in conflicts.