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Which of the following is a security tool that can help prevent data tampering by sending a secret stamp inside an encrypted data frame?

1) Firewall
2) Antivirus
3) Intrusion Detection System
4) Digital Signature

Answer :

Final answer:

A Digital Signature is used to prevent data tampering by providing a secret stamp within an encrypted data frame, serving as a validation technique for the authenticity and integrity of digital communications.

Explanation:

The security tool that can help prevent against data tampering by sending a secret stamp inside of an encrypted data frame is a Digital Signature. A digital signature is essentially a mathematical technique used to validate the authenticity and integrity of a message, software, or digital document. It's the digital counterpart to a handwritten signature or a stamped seal, but it's far more secure due to the use of encryption techniques.

To understand how a digital signature contributes to security, it’s important to know that it’s based on public-key cryptography. Here's a simplified step-by-step process of how digital signatures work:

  1. The sender uses a private key to encrypt the document’s data—the digital signature.
  2. The encrypted data (digital signature), along with the original document, is sent to the recipient.
  3. The recipient applies the sender’s public key to decrypt the signature.
  4. If it decrypts successfully and matches the document's data, the integrity and authenticity of the document are verified, indicating that the document has not been tampered with during transit.

Other measures such as firewalls, antivirus software, and intrusion detection systems are also essential for overall security but they serve different purposes than digital signatures. For example, a firewall serves to block unauthorized access to or from a private network, antivirus software protects against malware, and an intrusion detection system monitors network traffic for suspicious activity.

Increased security for both individuals and organizations can include practices like using two-factor authentication, crafting stronger passwords, employing digital signatures, and educating users to not fall for scams. These practices ensure safeguarding personal information and corporate data against various types of cyber threats.

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Rewritten by : Jeany