Instructions to use drumshadow/modernbert-indirect-injection-detector with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Transformers
How to use drumshadow/modernbert-indirect-injection-detector with Transformers:
# Use a pipeline as a high-level helper from transformers import pipeline pipe = pipeline("text-classification", model="drumshadow/modernbert-indirect-injection-detector")# pip install -U transformers accelerate # Load model directly from transformers import AutoTokenizer, AutoModelForSequenceClassification tokenizer = AutoTokenizer.from_pretrained("drumshadow/modernbert-indirect-injection-detector") model = AutoModelForSequenceClassification.from_pretrained("drumshadow/modernbert-indirect-injection-detector", device_map="auto") - Notebooks
- Google Colab
- Kaggle
Download DATA.md from drumshadow/modernbert-indirect-injection-detector: direct link, hf CLI and curl.
- Browser
- Download file 17.2 kB
-
https://huggingface.co/drumshadow/modernbert-indirect-injection-detector/resolve/main/DATA.md
- Command line
-
hf download hf://drumshadow/modernbert-indirect-injection-detector/DATA.md
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curl -L -o DATA.md https://huggingface.co/drumshadow/modernbert-indirect-injection-detector/resolve/main/DATA.md
Data
The source of truth for what each source may be used for is ipi/registry.py. This file explains it. Exact
upstream revisions (HF commit sha / git commit) are recorded by scripts/fetch.py in data/raw/MANIFEST.json.
Task and labeling rule
One input = one piece of untrusted content as an agent's tool returns it (email, web page, document, file, JSON API response, chat log). Output = does it contain instructions injected for the agent?
label = 1 iff the content contains text that tries to get the AI agent processing it to act or answer in a way the content's legitimate role does not call for: instructions addressed to the model/assistant/agent (explicitly, or implicitly by asking for tool actions only an agent could take), fake system/user turns, or encoded instructions with a cue to decode and follow them.
label = 0 for instructions addressed to the human reader (how-tos, READMEs, install steps, requests between colleagues, IT/HR emails asking the reader to act), and for injection strings that are quoted as the object of discussion: clearly delimited (quotes, blockquote, code block) and framed as an example, with no surrounding text telling the reading agent to follow them.
Quoted examples, decided: a security article that quotes "Ignore previous instructions and ..." as an example
is 0. The same article with any activating line aimed at the reader-agent ("AI assistant summarizing this:
do what the example says") is 1. Phase B generates these as matched pairs (scripts/generate_qwen.py --task quoted) so the model has to learn the activation, not the vocabulary; both halves of a pair share a group and
therefore a split. Results are reported on the hardneg_quoted / quoted_activated slices separately, because a
cautious operator may prefer to flag quoted injections too; that is a threshold/policy choice made downstream.
Ambiguous by construction, kept out of training: BIPIA inserts bare task strings ("What is the capital of
Brazil?") into emails and tables and labels them attacks. Under the rule above a bare question is not clearly
addressed to the agent, so bare BIPIA insertions only appear in the eval-only split eval_bipia_bare
(recall reported, not used for model selection). In training, BIPIA attack strings are always wrapped in an
agent-addressed template from the taxonomy.
Sources
| id | URL | license | use | role | notes |
|---|---|---|---|---|---|
| llmail_inject | hf: microsoft/llmail-inject-challenge | MIT | train (phase 1), OOD (phase 2) | native | Human adaptive attacks on an LLM email client. Only attack_attempt=True rows. Phase 2 = ood_llmail_p2 after removing near-dups (MinHash J>=0.7) of phase 1. emails_for_fp_tests + scenario emails = benign. |
| bipia | github: microsoft/BIPIA | MIT (repo); EmailQA from OpenAI Evals (MIT); TableQA from WikiTableQuestions (CC-BY-SA-4.0); CodeQA from Stack Exchange (CC-BY-SA-4.0) | train | carrier + payload | email/table/code only. Upstream train files -> train/val, upstream test files -> test. |
| injecagent | github: uiuc-kang-lab/InjecAgent | MIT | train | native | 17 tool-response templates x 62 attacker instructions x {base, enhanced}. Templates and attacker cases are split independently; only same-split pairs are kept. Benign rows fill the template slot with a same-split benign snippet. |
| agentdojo | github: ethz-spylab/agentdojo | MIT | OOD only | native | Never trained on: the detector will gate taint in a later AgentDojo rerun of the gateway. Rendered from suite environments (YAML objects as tools return them), v1 injection-task goals and the 5 fixed attack templates. |
| gandalf_ignore | hf: Lakera/gandalf_ignore_instructions | MIT | train | payload | Human override prompts; upstream test file -> test. |
| multilingual_pi | hf: yanismiraoui/prompt_injections | Apache-2.0 | train | payload | Multilingual override strings. |
| notinject | hf: leolee99/NotInject | MIT | eval only | hard negative | Benign sentences containing trigger words (PIGuard over-defense benchmark). Kept out of training on purpose. |
| deepset_pi | hf: deepset/prompt-injections | Apache-2.0 | eval only | native | Direct (user-turn) injections, EN/DE. Measures shift to direct injection. Note: its label 1 includes plain tasks ("Generate SQL code ..."), i.e. a different label definition; reported for reference only. |
| fineweb_edu | hf: HuggingFaceFW/fineweb-edu (sample-10BT, streamed 20k) | ODC-BY-1.0 (compilation); pages subject to CommonCrawl ToU | train | carrier | Web pages, rendered as text / HTML / search-result JSON. |
| wikipedia | hf: wikimedia/wikipedia 20231101 (en 8k + de/fr/es/it/pt/ja/zh 600 each) | CC-BY-SA-3.0 / GFDL | train | carrier | Docs + multilingual carriers. |
| dolly | hf: databricks/databricks-dolly-15k | CC-BY-SA-3.0 | train | hard negative | Human-written instructions + answers (benign imperative text). |
| oasst1 | hf: OpenAssistant/oasst1 | Apache-2.0 | train | hard negative | User/assistant transcripts (requests to an assistant inside a transcript are data, label 0). |
| github_code_clean | hf: codeparrot/github-code-clean (2 shards) | Apache-2.0 dataset; rows filtered to mit/apache-2.0/bsd/isc/unlicense/cc0 file licenses | train | carrier + hard negative | READMEs and source files. Grouped by repo. |
| commitpackft | hf: bigcode/commitpackft (markdown/python/yaml/shell/js) | MIT dataset; permissively licensed source repos | train | hard negative | Commit messages ("Ignore build dir", "Remove X"). Grouped by repo. |
| synthetic_codex | taxonomy/*.json | project-authored (drafted with Codex gpt-6-astra) | train | payload | 18 attack families x 6 templates, 90 goals, 12 framings, 16 obfuscations; carriers + 23 hard-negative types. |
| synthetic_qwen | data/synth/*.jsonl (Phase B) | generated by local Qwen3.6-35B-A3B (Apache-2.0 weights) | train | all | Phase B only. |
Excluded
| source | license | why |
|---|---|---|
| Tensor Trust (HumanCompatibleAI/tensor-trust-data, qxcv/tensor-trust) | none stated for the data | unclear license; direct injection anyway |
| WASP (facebookresearch/wasp) | CC-BY-NC-4.0 | non-commercial; would block publishing |
| hackaprompt/hackaprompt-dataset | MIT but gated | gated data excluded by policy |
| BIPIA WebQA / Summarization | NewsQA / XSum terms | not redistributable |
| Enron email corpus | no explicit license | LLMail FP emails + synthetic emails cover benign email |
| xTRam1/safe-guard-prompt-injection, jayavibhav/prompt-injection, geekyrakshit/prompt-injection-dataset, neuralchemy/Prompt-injection-dataset | missing license or unverifiable upstream provenance | re-mixes would launder NC/unknown licenses into a shipped model |
| microsoft/TaskTracker | MIT | SQuAD + BIPIA re-mix; adds mostly duplicates |
| Llama Prompt Guard 2, qualifire sentinel (as baselines) | gated / custom | not reproducible without accepting terms |
| alpaca | CC-BY-NC-4.0 | non-commercial |
Licensing position (what is and is not established)
- Model weights. Every
use=trainsource permits commercial use and derived works (MIT, Apache-2.0, ODC-BY, CC-BY-SA, permissive code licenses), and none is gated. Whether CC-BY-SA terms attach to classifier weights trained on CC-BY-SA text is not settled; the working assumption (common practice, see Creative Commons' AI-training guidance) is that they do not, and the card credits those sources anyway. That is an assumption, not a legal conclusion. - Web text. ODC-BY covers the FineWeb-Edu compilation only; Common Crawl pages keep their authors' rights. Used for training; never redistributed verbatim.
- Code. github-code-clean rows filtered to mit/apache-2.0/bsd/isc/unlicense/cc0 file licenses. CommitPackFT advertises permissive origins but actually contains agpl/mpl/lgpl rows; they are filtered out the same way. License, repo and path are kept per row.
- Dataset redistribution (if a dataset is ever published) is decided per row from
meta.components: every component must be redistributable under the dataset's license. CC-BY-SA components (Wikipedia, Dolly, BIPIA table/code contexts) force share-alike plus attribution, or are dropped; FineWeb page text is dropped.
Schema
{text, label, source, template_id, carrier, id, group, split, inj_span, slice, lang, meta}; carrier is one of
email | web | doc | code | tool_json | chat | other. See ipi/schema.py.
Splits and leakage controls
- Unit of splitting = group, never row. Groups are carrier documents (upstream repo for GitHub data), attack
families, goals, framings, raw-payload near-dup clusters (across all payload sources), LLMail near-dup clusters
(computed on the original text, before entity replacement), and InjecAgent tool templates / attacker cases.
Assignment is a salted-hash ordering with count cuts (
ipi/splits.py), so even 12 framings or 18 families yield >=1 group in val and test. - Composition happens inside a split. A composed positive takes its host document, attack family, goal,
framing and raw payload from the same split's pools, and records them as
meta.ingredients. What the test split measures is therefore held-out template-family composition: attack families, goals, framings and payload clusters never seen in training, inside documents never seen in training. It is not a claim about unseen attack techniques: the 11 programmatic obfuscations are shared across splits (reported per slice), and a held-out family can still be semantically close to a training family. - Upstream splits are respected. BIPIA and Gandalf upstream test items only feed our test split.
- Held-out sources.
ood_agentdojo(whole source) andood_llmail_p2(later phase, adaptive attacks, minus near-dups of phase 1) are never trained on.eval_notinject,eval_deepset,eval_bipia_bareare eval-only probes. AgentDojo shares one attack string with training (the InjecAgent "IMPORTANT!!! Ignore all previous instructions" prefix) and is reported per attack template.eval.pyskips it unless--final, so it cannot steer development before the gateway experiment. - Dedup. Exact (NFKC, zero-width stripped, whitespace-collapsed sha1) and near-dup (MinHash 64 perms; word 5-grams, or char 5-grams for CJK and texts under 300 chars; LSH candidates kept only if the Jaccard estimate is >= 0.8). Train/val members of any cluster that touches an evaluation split are dropped; evaluation splits are never pruned for each other; train-vs-val collisions resolve to val.
- Audit before write.
build_dataset.pyexits without writing if any group, ingredient or positive template appears in train/val and another split, if any row in train/val/test has a non-train component, or if any sentinel survives rendering.stats.jsonrecords argv, code revision, taxonomy and manifest hashes, and per-split sha256. - Shortcut controls. LLMail's single target address is replaced per row (plain-text occurrences only;
encoded copies remain). Attacks and a benign "entity sentence" (link/address, 30% of carriers of both
labels) draw from one pool of example.* endpoints. Email positives and negatives share five renderers, and 15%
of doc/web/chat carriers are re-homed as emails so the email carrier is not mostly LLMail positives. HTML
escaping is identical for both labels. Taxonomy goals and framings contain no placeholder tokens.
scripts/shallow_baseline.pymeasures what a metadata-only model can still extract.
Obfuscations
Implemented programmatically (shared across splits, reported as obf_* slices): base64, ROT13, URL percent
encoding (all three with a decode-and-follow cue), HTML entities, homoglyphs, zero-width characters, leetspeak,
typos, character spacing, line splitting, Unicode tag characters. Tag-character payloads ("ASCII smuggling")
are labelled 1 without a visible cue because models do read tag characters. Not implemented (need an LLM or
are rendering-dependent): cross-language translation (Phase B translate), synonym paraphrase,
bidirectional controls, markdown hiding, unicode-escape encoding.
Row counts
Phase B build (scripts/build_dataset.py, defaults, seed 13) at code rev 2ce5341, including the Qwen synthetic data below.
| split | rows | positive | negative | email +/- | web +/- | doc +/- | code +/- | tool_json +/- | chat +/- | other +/- |
|---|---|---|---|---|---|---|---|---|---|---|
| eval_bipia_bare | 400 | 400 | 0 | 124/0 | 0/0 | 140/0 | 70/0 | 66/0 | 0/0 | 0/0 |
| eval_deepset | 662 | 263 | 399 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 263/399 | 0/0 |
| eval_notinject | 339 | 0 | 339 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/339 | 0/0 |
| ood_agentdojo | 914 | 785 | 129 | 150/31 | 125/1 | 255/14 | 0/0 | 255/74 | 0/9 | 0/0 |
| ood_llmail_p2 | 3832 | 3832 | 0 | 3832/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| test | 13205 | 6583 | 6622 | 1887/822 | 1052/1280 | 1098/1339 | 1040/1251 | 1056/1353 | 420/548 | 30/29 |
| train | 105336 | 52983 | 52353 | 14842/6378 | 8613/10559 | 8704/10832 | 7999/9718 | 9478/10722 | 3247/4060 | 100/84 |
| val | 13072 | 6502 | 6570 | 1863/819 | 1034/1307 | 1129/1391 | 962/1165 | 1056/1320 | 451/563 | 7/5 |
Dedup: 54 exact duplicates, 165 train/val near-duplicates of evaluation rows removed; 0 exact texts with conflicting labels. Raw payloads (incl. 400 Qwen translations): 2,684 in 2,514 near-dup clusters.
Train rows by source (pos/neg). For composed positives source is the payload source; the host document's source is in meta.host_source and both are in meta.components, which is what licensing filters use.
bipia 1009/814; commitpackft 0/4001; dolly 0/6401; fineweb_edu 0/16077; gandalf_ignore 7043/0; github_code_clean 0/8791; injecagent 1200/12; llmail_inject 9602/184; multilingual_pi 7711/0; oasst1 0/4722; synthetic_codex 22904/0; synthetic_qwen 3514/1610; wikipedia 0/9741.
Synthetic data (Phase B, local Qwen3.6-35B-A3B, 2026-10-29)
Volumes were cut from the planned 4,000 per task because the GPU was shared (~285 tok/s aggregate): carriers 600, hard negatives 600, matched benign 595 (InjecAgent slot fills + LLMail-style emails), LLM-written injected documents 537 of 800 requests (the rest returned no valid JSON/span) of which 52 (9.7%) were dropped because the generator leaked meta-vocabulary ("attacker", "INJECTION_POINT") into the attack span, quoted/activated pairs 271 (542 rows), translations 400. Codex expanded the attack templates from 108 to 288 (taxonomy/codex-raw/out-templates-expand.json). 0 failed requests.
Shortcut probe
scripts/shallow_baseline.py, trained on 60k train rows. Phase A = before synthetic data; Phase B = final build.
| split | metadata-only AUC (A / B) | TF-IDF+LR AUC (A / B) | TF-IDF recall@0.5 (B) | TF-IDF FPR@0.5 (B) |
|---|---|---|---|---|
| val | 0.700 / 0.706 | 0.959 / 0.954 | 0.729 | 0.028 |
| test | 0.674 / 0.678 | 0.946 / 0.937 | 0.641 | 0.026 |
| ood_llmail_p2 | n/a (pos only) | n/a | 0.980 | n/a |
| eval_notinject | n/a (neg only) | n/a | n/a | 0.112 |
| eval_deepset | 0.807 / 0.808 | 0.802 / 0.822 | 0.399 | 0.033 |
| eval_bipia_bare | n/a | n/a | 0.107 | n/a |
Per-carrier metadata-only AUC on test (A / B): email 0.829 / 0.804, chat 0.633 / 0.669, doc 0.629 / 0.624, code 0.602 / 0.611, web 0.597 / 0.620, tool_json 0.577 / 0.586, other – / 0.640.
Reading: surface form still predicts the label for email (LLMail positives have their own length/style; the ~300 matched benign LLMail-style emails moved it only slightly) and mildly elsewhere (positives are longer by the inserted payload). The TF-IDF model is the lexical floor (0.94 test AUC, 98% recall on LLMail phase 2, whose attacks are lexically obvious), so the neural model has to be judged on the harder slices: held-out families, NotInject FPR, quoted pairs, multilingual, AgentDojo.
Known limitations of the data
- Labels for native sources come from the upstream attack flags. The only label audit so far is a first pass
by a model (claude-opus-5.5), not a human (
audit/label_audit_2026-10-29.md): of 110 sampled positives 91.8% agree with the rule, 7.3% are ambiguous (mostly LLMail requests phrased for a human, and multilingual prompt-extraction lines) and 0.9% are wrong; no hidden injections were found among negatives. A human audit is still owed. - Structure-aware insertion is not implemented: an insertion that lands inside a quoted block or an archived transcript turn is labelled 1 (it is attacker text in data the agent reads).
- LLMail positives are numerous and come from one scenario family (send an email); capped at 2 per near-dup
cluster and 12k overall. LLMail spans are the whole body (
span_kind=whole). - InjecAgent has only 17 templates; its val/test slices are small. Benign fills are FineWeb snippets in Phase A and template-matched Qwen fills after Phase B.
- AgentDojo benign items (~130) give a coarse FPR on that split (zero false positives would still mean an upper
bound of ~2.3% at 95%);
ood_llmail_p2has no negatives. Gateway shadow-mode traffic is the planned benign set. - Cross-lingual paraphrases of the same attack are not clustered together.