Glossary of Virus Terms - E
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ELF
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ELF (Executable and Link Format) is an executable file format for the Linux and
Unix platforms. Trend Micro antivirus detects malicious executable code for Linux
and UNIX as ELF_malwarename.
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Encryption
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Encryption is the process of converting data into a form that cannot easily be read
without knowledge of the conversion mechanism (often called a key).
Certain malware have the ability to encrypt copies of themselves such that antivirus
scanners may find it difficult to detect them using existing signatures of available
samples. More complex malware use variable encryption keys for each new copy, requiring
more complex formula-based patterns from antivirus vendors.
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End User License Agreement (EULA)
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An End User License Agreement or EULA is a legal contract between a software publisher
and the software user. It typically outlines restrictions on the side of the user,
who can refuse to enter into the agreement by not clicking "I accept"
during installation. Clicking "I do not accept" will, of course, end the
installation of the software product.
Many users inadvertently agree to the installation of spyware and adware into their
computers when they click "I accept" on EULA prompts displayed during
the installation of certain free software.
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Explicit display of Phishing URL
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The actual phishing URL is displayed on the address bar. In some cases, it involves
the use of domain names and resembles those of legitimate domains.
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Exploit
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An exploit is code that takes advantage of a software vulnerability or security
hole. Exploits are often incorporated into malware, which are consequently able
to propagate into and run intricate routines on vulnerable computers.
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