phi2-lora-malicious-classifier

hurtmongoose/phi2-lora-malicious-classifier

phi2-lora-malicious-classifier is a machine learning model from hurtmongoose. Use it for the machine learning task on the model card, and read the license before you ship it in a product. It is set up for peft. The card lists the license as mit.

should probably proofread and complete it, then remove this comment. --

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At a glance

Library: peft
License: mit
Access: Public
Created: Nov 11, 2025
Updated: Nov 11, 2025
SHA: 98c64135

Base models

microsoft/phi-2

Model card

From the Hugging Face model README

phi2-lora-malicious-classifier

This model is a fine-tuned version of microsoft/phi-2 on an unknown dataset. It achieves the following results on the evaluation set:

Loss: 0.4627
Accuracy: 0.8476
Precision Weighted: 0.8428
Recall Weighted: 0.8476
F1 Weighted: 0.8440
Mcc: 0.7515
Balanced Accuracy: 0.7994
Per Class: {'jailbreaking': {'TP': 259, 'FP': 97, 'FN': 130, 'TN': 1443, 'FNR': 0.3341902313624679, 'FPR': 0.06298701298701298, 'Specificity': 0.937012987012987}, 'prompt injection': {'TP': 434, 'FP': 97, 'FN': 136, 'TN': 1262, 'FNR': 0.23859649122807017, 'FPR': 0.07137601177336277, 'Specificity': 0.9286239882266373}, 'unharmful': {'TP': 942, 'FP': 100, 'FN': 28, 'TN': 859, 'FNR': 0.0288659793814433, 'FPR': 0.10427528675703858, 'Specificity': 0.8957247132429614}}

Model description

More information needed

Intended uses & limitations

More information needed

Training and evaluation data

More information needed

Training procedure

Training hyperparameters

The following hyperparameters were used during training:

learning_rate: 2e-05
train_batch_size: 8
eval_batch_size: 8
seed: 42
optimizer: Use adamw_torch with betas=(0.9,0.999) and epsilon=1e-08 and optimizer_args=No additional optimizer arguments
lr_scheduler_type: linear
lr_scheduler_warmup_ratio: 0.1
num_epochs: 10

Training results

Training Loss	Epoch	Step	Validation Loss	Accuracy	Precision Weighted	Recall Weighted	F1 Weighted	Mcc	Balanced Accuracy	Per Class
0.7931	1.0	1107	0.7796	0.6910	0.6758	0.6910	0.6750	0.4860	0.6086	{'jailbreaking': {'TP': 148, 'FP': 141, 'FN': 241, 'TN': 1399, 'FNR': 0.6195372750642674, 'FPR': 0.09155844155844156, 'Specificity': 0.9084415584415585}, 'prompt injection': {'TP': 309, 'FP': 145, 'FN': 261, 'TN': 1214, 'FNR': 0.45789473684210524, 'FPR': 0.10669610007358352, 'Specificity': 0.8933038999264165}, 'unharmful': {'TP': 876, 'FP': 310, 'FN': 94, 'TN': 649, 'FNR': 0.09690721649484536, 'FPR': 0.3232533889468196, 'Specificity': 0.6767466110531803}}
0.5884	2.0	2214	0.5420	0.8015	0.7916	0.8015	0.7899	0.6742	0.7269	{'jailbreaking': {'TP': 188, 'FP': 94, 'FN': 201, 'TN': 1446, 'FNR': 0.5167095115681234, 'FPR': 0.06103896103896104, 'Specificity': 0.938961038961039}, 'prompt injection': {'TP': 411, 'FP': 97, 'FN': 159, 'TN': 1262, 'FNR': 0.2789473684210526, 'FPR': 0.07137601177336277, 'Specificity': 0.9286239882266373}, 'unharmful': {'TP': 947, 'FP': 192, 'FN': 23, 'TN': 767, 'FNR': 0.023711340206185566, 'FPR': 0.20020855057351408, 'Specificity': 0.799791449426486}}
0.462	3.0	3321	0.5065	0.8186	0.8101	0.8186	0.8101	0.7026	0.7531	{'jailbreaking': {'TP': 208, 'FP': 90, 'FN': 181, 'TN': 1450, 'FNR': 0.4652956298200514, 'FPR': 0.05844155844155844, 'Specificity': 0.9415584415584416}, 'prompt injection': {'TP': 430, 'FP': 103, 'FN': 140, 'TN': 1256, 'FNR': 0.24561403508771928, 'FPR': 0.07579102281089035, 'Specificity': 0.9242089771891097}, 'unharmful': {'TP': 941, 'FP': 157, 'FN': 29, 'TN': 802, 'FNR': 0.029896907216494847, 'FPR': 0.16371220020855057, 'Specificity': 0.8362877997914494}}
0.4606	4.0	4428	0.4729	0.8305	0.8248	0.8305	0.8267	0.7233	0.7784	{'jailbreaking': {'TP': 242, 'FP': 105, 'FN': 147, 'TN': 1435, 'FNR': 0.37789203084832906, 'FPR': 0.06818181818181818, 'Specificity': 0.9318181818181818}, 'prompt injection': {'TP': 430, 'FP': 119, 'FN': 140, 'TN': 1240, 'FNR': 0.24561403508771928, 'FPR': 0.0875643855776306, 'Specificity': 0.9124356144223694}, 'unharmful': {'TP': 930, 'FP': 103, 'FN': 40, 'TN': 856, 'FNR': 0.041237113402061855, 'FPR': 0.10740354535974973, 'Specificity': 0.8925964546402503}}
0.4217	5.0	5535	0.4688	0.8351	0.8295	0.8351	0.8311	0.7309	0.7831	{'jailbreaking': {'TP': 245, 'FP': 104, 'FN': 144, 'TN': 1436, 'FNR': 0.37017994858611825, 'FPR': 0.06753246753246753, 'Specificity': 0.9324675324675324}, 'prompt injection': {'TP': 430, 'FP': 106, 'FN': 140, 'TN': 1253, 'FNR': 0.24561403508771928, 'FPR': 0.07799852832965416, 'Specificity': 0.9220014716703459}, 'unharmful': {'TP': 936, 'FP': 108, 'FN': 34, 'TN': 851, 'FNR': 0.03505154639175258, 'FPR': 0.11261730969760167, 'Specificity': 0.8873826903023984}}
0.445	6.0	6642	0.4465	0.8434	0.8390	0.8434	0.8402	0.7449	0.7953	{'jailbreaking': {'TP': 259, 'FP': 107, 'FN': 130, 'TN': 1433, 'FNR': 0.3341902313624679, 'FPR': 0.06948051948051948, 'Specificity': 0.9305194805194805}, 'prompt injection': {'TP': 428, 'FP': 98, 'FN': 142, 'TN': 1261, 'FNR': 0.24912280701754386, 'FPR': 0.07211184694628403, 'Specificity': 0.927888153053716}, 'unharmful': {'TP': 940, 'FP': 97, 'FN': 30, 'TN': 862, 'FNR': 0.030927835051546393, 'FPR': 0.10114702815432743, 'Specificity': 0.8988529718456726}}
0.3633	7.0	7749	0.4604	0.8460	0.8409	0.8460	0.8422	0.7487	0.7968	{'jailbreaking': {'TP': 253, 'FP': 90, 'FN': 136, 'TN': 1450, 'FNR': 0.3496143958868895, 'FPR': 0.05844155844155844, 'Specificity': 0.9415584415584416}, 'prompt injection': {'TP': 440, 'FP': 106, 'FN': 130, 'TN': 1253, 'FNR': 0.22807017543859648, 'FPR': 0.07799852832965416, 'Specificity': 0.9220014716703459}, 'unharmful': {'TP': 939, 'FP': 101, 'FN': 31, 'TN': 858, 'FNR': 0.031958762886597936, 'FPR': 0.10531803962460896, 'Specificity': 0.894681960375391}}
0.3249	8.0	8856	0.4670	0.8450	0.8408	0.8450	0.8417	0.7475	0.7976	{'jailbreaking': {'TP': 262, 'FP': 106, 'FN': 127, 'TN': 1434, 'FNR': 0.3264781491002571, 'FPR': 0.06883116883116883, 'Specificity': 0.9311688311688312}, 'prompt injection': {'TP': 427, 'FP': 93, 'FN': 143, 'TN': 1266, 'FNR': 0.25087719298245614, 'FPR': 0.0684326710816777, 'Specificity': 0.9315673289183223}, 'unharmful': {'TP': 941, 'FP': 100, 'FN': 29, 'TN': 859, 'FNR': 0.029896907216494847, 'FPR': 0.10427528675703858, 'Specificity': 0.8957247132429614}}
0.3672	9.0	9963	0.4610	0.8471	0.8421	0.8471	0.8434	0.7505	0.7980	{'jailbreaking': {'TP': 255, 'FP': 96, 'FN': 134, 'TN': 1444, 'FNR': 0.3444730077120823, 'FPR': 0.06233766233766234, 'Specificity': 0.9376623376623376}, 'prompt injection': {'TP': 438, 'FP': 99, 'FN': 132, 'TN': 1260, 'FNR': 0.23157894736842105, 'FPR': 0.0728476821192053, 'Specificity': 0.9271523178807947}, 'unharmful': {'TP': 941, 'FP': 100, 'FN': 29, 'TN': 859, 'FNR': 0.029896907216494847, 'FPR': 0.10427528675703858, 'Specificity': 0.8957247132429614}}
0.4548	10.0	11070	0.4627	0.8476	0.8428	0.8476	0.8440	0.7515	0.7994	{'jailbreaking': {'TP': 259, 'FP': 97, 'FN': 130, 'TN': 1443, 'FNR': 0.3341902313624679, 'FPR': 0.06298701298701298, 'Specificity': 0.937012987012987}, 'prompt injection': {'TP': 434, 'FP': 97, 'FN': 136, 'TN': 1262, 'FNR': 0.23859649122807017, 'FPR': 0.07137601177336277, 'Specificity': 0.9286239882266373}, 'unharmful': {'TP': 942, 'FP': 100, 'FN': 28, 'TN': 859, 'FNR': 0.0288659793814433, 'FPR': 0.10427528675703858, 'Specificity': 0.8957247132429614}}

Framework versions

PEFT 0.17.1
Transformers 4.53.3
Pytorch 2.6.0+cu124
Datasets 4.3.0
Tokenizers 0.21.4

Library: peft
License: mit
Created: Nov 11, 2025
Updated: Nov 11, 2025