Answer: Security holes
Explanation: Security holes are the patches in the form of vulnerabilities that occur in the antivirus software and other such software that can lead to the hacking or attacking of the system. Security holes are filled in with update as quick repair solution. During this repairing, worms as a malicious element attacks the system.
Other options are incorrect because scripts is type of language ,applets are small applications and the files index is the index holding the data of files.Thus the correct option is security holes.
