Protecting against an impersonation scam in a live video stream

1. A computer-implemented method for protecting against an impersonation scam in a live video stream, at least a portion of the method being performed by a computing device comprising one or more processors, the computer-implemented method comprising:

periodically extracting and storing signature features from verified video streams of verified streamers;

identifying an unverified live video stream of an unverified streamer being viewed by one or more users;

extracting and storing signature features from the unverified live video stream;

computing overall distance scores between the signature features of the unverified live video stream and the signature features of the verified video streams;

determining whether the unverified streamer is impersonating one or more of the verified streamers by determining whether one or more of the overall distance scores are less than a distance threshold;

in response to determining that the unverified streamer is impersonating one or more of the verified streamers, determining, using a machine learning classifier, whether one or more text signature features of the unverified live video stream include an impersonation scam; and

in response to determining that the one or more text signature features of the unverified live video stream include the impersonation scam, performing a remedial action to protect the one or more users from the impersonation scam.

2. The computer-implemented method of claim 1 , wherein the performing of the remedial action comprises:

sending a security alert to the one or more users regarding the impersonation scam;

blocking the one or more users from accessing the unverified live video stream;

reporting the impersonation scam to a streaming platform being utilized by the unverified streamer; or

some combination thereof.

3. The computer-implemented method of claim 1 , wherein the signature features comprise:

the one or more text signature features; and

one or more image signature features.

4. The computer-implemented method of claim 1 , wherein the one or more text signature features comprise:

text overlaying video in the verified and unverified video streams;

text included in a separate chat that is presented separately from the video in the verified and unverified video streams; or

some combination thereof.

5. The computer-implemented method of claim 1 , wherein:

the machine learning classifier comprises a logistic regression machine learning classifier; and

the computer-implemented method further comprises periodically training the logistic regression machine learning classifier using labeled training data.

6. The computer-implemented method of claim 1 , wherein the verified and unverified video streams comprise video game video streams.

7. The computer-implemented method of claim 6 , wherein the impersonation scam comprises a giveaway impersonation scam where a false giveaway is offered as an incentive for the one or more users to select a malicious link.

8. One or more non-transitory computer-readable media comprising one or more computer-readable instructions that, when executed by one or more processors of a computing device, cause the computing device to perform a method for protecting against an impersonation scam in a live video stream, the method comprising:

periodically extracting and storing signature features from verified video streams of verified streamers;

identifying an unverified live video stream of an unverified streamer being viewed by one or more users;

extracting and storing signature features from the unverified live video stream;

computing overall distance scores between the signature features of the unverified live video stream and the signature features of the verified video streams;

determining whether the unverified streamer is impersonating one or more of the verified streamers by determining whether one or more of the overall distance scores are less than a distance threshold;

in response to determining that the unverified streamer is impersonating one or more of the verified streamers, determining, using a machine learning classifier, whether one or more text signature features of the unverified live video stream include an impersonation scam; and

in response to determining that the one or more text signature features of the unverified live video stream include the impersonation scam, performing a remedial action to protect the one or more users from the impersonation scam.

9. The one or more non-transitory computer-readable media of claim 8 , wherein the performing of the remedial action comprises:

sending a security alert to the one or more users regarding the impersonation scam;

blocking the one or more users from accessing the unverified live video stream;

reporting the impersonation scam to a streaming platform being utilized by the unverified streamer; or

some combination thereof.

10. The one or more non-transitory computer-readable media of claim 8 , wherein the signature features comprise:

the one or more text signature features; and

one or more image signature features.

11. The one or more non-transitory computer-readable media of claim 8 , wherein the one or more text signature features comprise:

text overlaying video in the verified and unverified video streams;

text included in a separate chat that is presented separately from the video in the verified and unverified video streams; or

some combination thereof.

12. The one or more non-transitory computer-readable media of claim 8 , wherein:

the machine learning classifier comprises a logistic regression machine learning classifier; and

the method further comprises periodically training the logistic regression machine learning classifier using labeled training data.

13. The one or more non-transitory computer-readable media of claim 8 , wherein the verified and unverified video streams comprise video game video streams.

14. The one or more non-transitory computer-readable media of claim 13 , wherein the impersonation scam comprises a giveaway impersonation scam where a false giveaway is offered as an incentive for the one or more users to select a malicious link.

15. A server device comprising:

one or more processors; and

one or more non-transitory computer-readable media comprising one or more computer-readable instructions that, when executed by the one or more processors, cause the server device to perform a method for protecting against an impersonation scam in a live video stream, the method comprising:

periodically extracting and storing signature features from verified video streams of verified streamers;

identifying an unverified live video stream of an unverified streamer being viewed by one or more users;

extracting and storing signature features from the unverified live video stream;

computing overall distance scores between the signature features of the unverified live video stream and the signature features of the verified video streams;

determining whether the unverified streamer is impersonating one or more of the verified streamers by determining whether one or more of the overall distance scores are less than a distance threshold;

in response to determining that the unverified streamer is impersonating one or more of the verified streamers, determining, using a machine learning classifier, whether one or more text signature features of the unverified live video stream include an impersonation scam; and

in response to determining that the one or more text signature features of the unverified live video stream include the impersonation scam, performing a remedial action to protect the one or more users from the impersonation scam.

16. The server device of claim 15 , wherein the performing of the remedial action comprises:

sending a security alert to the one or more users regarding the impersonation scam;

blocking the one or more users from accessing the unverified live video stream;

reporting the impersonation scam to a streaming platform being utilized by the unverified streamer; or

some combination thereof.

17. The server device of claim 15 , wherein the signature features comprise:

the one or more text signature features; and

one or more image signature features.

18. The server device of claim 15 , wherein the one or more text signature features comprise:

text overlaying video in the verified and unverified video streams;

text included in a separate chat that is presented separately from the video in the verified and unverified video streams; or

some combination thereof.

19. The server device of claim 15 , wherein:

the machine learning classifier comprises a logistic regression machine learning classifier; and

the method further comprises periodically training the logistic regression machine learning classifier using labeled training data.

20. The server device of claim 15 , wherein:

the verified and unverified video streams comprise video game video streams; and

the impersonation scam comprises a giveaway impersonation scam where a false giveaway is offered as an incentive for the one or more users to select a malicious link.