| CPC G06N 5/048 (2013.01) [G06N 7/01 (2023.01); G06N 20/00 (2019.01); H04L 51/212 (2022.05); H04L 63/126 (2013.01); H04L 63/1466 (2013.01); H04L 63/0236 (2013.01); H04L 63/0245 (2013.01); H04L 63/1425 (2013.01)] | 20 Claims |

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1. A computer-implemented method for determining if an account identifier is computer-generated, comprising:
receiving the account identifier;
analyzing hashed or truncated identifier fragments of the account identifier to determine one or more tokens, the hashed or truncated identifier fragments having a predetermined fragment size, the fragment size automatically determined by a training data set;
comparing the one or more tokens and the fragments of the account identifier to other fragments associated with a plurality of other account identifiers to determine common occurrences; and
determining, by a computer, if the account identifier is computer-generated based on the determined fragment occurrences exceeding a predetermined confidence threshold, wherein the predetermined confidence threshold is based on a size of the other fragments associated with the plurality of the other account identifiers.
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