An email received by a receiver consists of an attachment. When he opens the attachment, it results in the message being resent to everyone in Microsoft Outlook address book of the receiver. What might be the contents of the attachment?

Correct option is C

The behavior described is typical of a virus. Viruses can attach themselves to legitimate programs or files, spreading by replicating themselves and often sending infected emails to contacts without the user’s consent. This is a classic method of propagation for malware.
Important Key Points:
1. Virus - A malicious program that replicates itself and spreads to other computers, often by exploiting vulnerabilities in software or user actions, like opening email attachments.
2. Impact - Viruses can perform harmful actions such as deleting files, sending emails automatically, or damaging system functions.
Knowledge Booster:
· Freeware: This refers to software that is available for use without cost. It does not contain malicious code to spread itself.
· Shareware: Software that is distributed on a trial basis, allowing users to try before buying. It is not malicious by design.
· Firewall: This is a security device or software designed to prevent unauthorized access to or from a private network, not a type of attachment that spreads emails.