Every virus cannot be detected by a signature-based antivirus largely for the following reasons:

* If an attacker has changed the signature of a virus, any signature-based antivirus will not be able to find the virus.
* Any new virus will not be captured by the antivirus, as it will not be on the list in the antivirus database.
* If the virus is not in the database of a signature-based antivirus, it will be virtually impossible for the antivirus to detect that virus.
* If the mutation engine of a polymorphic virus is generating a new encrypted code, this changes the signature of the virus. Therefore, polymorphic viruses cannot be detected by a signature-based antivirus.

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SQL Commandos (usefull for injections)

Here is a list of SQL commands and what they do, these would be used in some injection methods and of course legitimate sql functions. On thier own they wont

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What are the advantages and disadvantages of honey pots?

Honey pots have several advantages, which are as follows: * Small set of data: Honey pots collect small amounts of data, but almost all of this data is about real

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What are the various steps in the pre-attack phase?

In the pre-attack phase, there are seven steps, which have been defined by the EC-Council, as follows: 1. Information gathering 2. Determining network range 3. Identifying active machines 4. Finding

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