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Blog Polygraphy/ Lie detection in Criminal Investigations

Polygraphy/ Lie detection in Criminal Investigatio...

DEEPAK YADAV   Sep 2, 2025  0  24

A Polygraph test, commonly called a lie detector test, is a forensic and investigative tool used to determine whether a person is ...

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Voting Poll

What is a hash function used for in digital forensics?

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What is a hash function used for in digital forensics?

Total Vote: 2

Encrypting files
0 %
Recovering deleted files
50 %
Verifying data integrity
50 %
Compressing data
0 %

What does ‘write blocker’ do in forensics?

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What does ‘write blocker’ do in forensics?

Total Vote: 3

Allows writing on drives
0 %
Prevents alteration of original data
66.7 %
Deletes evidence
33.3 %
Encrypts files
0 %

The most common method for identifying a person is:

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The most common method for identifying a person is:

Total Vote: 5

Blood type
0 %
DNA analysis
60 %
Fingerprinting
40 %
Eye color
0 %

Which of the following is an example of physical evidence?

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Which of the following is an example of physical evidence?

Total Vote: 6

A confession letter
0 %
A fingerprint
83.3 %
A witness statement
16.7 %
A police report
0 %

What is chain of custody?

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What is chain of custody?

Total Vote: 7

A prisoner's handcuff
0 %
A legal term for DNA testing
14.3 %
A list of suspects
0 %
The documented process of evidence handling
85.7 %

Who is considered the "Father of Forensic Science"?

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Who is considered the "Father of Forensic Science"?

Total Vote: 5

Sir Arthur Conan Doyle
0 %
Edmond Locard
80 %
Alphonse Bertillon
20 %
Francis Galton
0 %

Which of these is a sign of a secure website?

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Which of these is a sign of a secure website?

Total Vote: 7

The page loads fast
0 %
It has lots of ads
14.3 %
The URL starts with "https://"
85.7 %
The background is green
0 %

What is 2FA (Two-Factor Authentication)?

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What is 2FA (Two-Factor Authentication)?

Total Vote: 5

Logging in with two devices
20 %
Using a second layer of verification
60 %
A firewall setting
0 %
A form of antivirus
20 %

What is the most important first step when collecting digital evidence from a suspect’s device?

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What is the most important first step when collecting digital evidence from a suspect’s device?

Total Vote: 5

Turn off the device to preserve battery life
0 %
Immediately begin copying all files
20 %
Secure and document the scene, and follow proper chain of custody
60 %
Disconnect the device from the internet and open any suspicious files
20 %

What is phishing?

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What is phishing?

Total Vote: 6

A method to catch fish online
0 %
A cyberattack to trick you into revealing information
100 %
A type of firewall
0 %
A secure way to log in
0 %

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