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FEAT: Add char_split attack technique in extra.py - #3381
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Roman Lutz (romanlutz) merged 5 commits intoOct 26, 2026
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Excellent contribution! I'm adding a couple of tests but this is good to merge.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 5702ce84-3326-45d7-8b0e-32f10eb5c16e
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 5702ce84-3326-45d7-8b0e-32f10eb5c16e
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Description
Registers the
char_splitattack technique inpyrit/setup/initializers/techniques/extra.pyby composingPromptTemplateConverterandSearchReplaceConverteronPromptSendingAttackviaAttackConverterConfig:PromptTemplateConverter): Appends output-formatting instructions asking the target to insert'.'between adjacent letters inside each word while leaving spaces, hyphens, and punctuation unchanged.SearchReplaceConverter): Normalizes the response before scoring with a single-pass regex (pattern=r"(\.){2}|(?<=\S)\.(?=\S)",replace=r"\1") that unescapes doubled periods (..->.) and strips single intra-word periods (.->"").This replaces the earlier OutputFormatConverter/CharSplitOutputConverter approach in this PR, per the review discussion. Those files are removed.
cc Roman Lutz (@romanlutz)
Tests and Documentation
EXTRA_TECHNIQUE_NAMESandtest_default_registers_only_coreintests/unit/setup/test_technique_initializer.py.TestCharSplitTechniqueintests/unit/setup/techniques/test_extra_techniques.pycovering factory wiring, request prompt formatting, response decoding/unescaping, and end-to-end execution throughAttackExecutor.