Portrait of Heather Lent

Multilingual security · Security research ethics · Lower-resourced NLP

Heather Lent

Assistant Professor

Heather studies security and privacy in multilingual language models, and how to conduct NLP security research responsibly.

Her work on embedding inversion tests whether an attacker can recover text from multilingual model representations. In NLP Security and Ethics, in the Wild, she and her coauthors examine how NLP security papers handle potential harms and propose guidance on responsible disclosure.

Heather also develops resources and evaluations for Creole languages. CreoleVal provides multilingual benchmarks, while What a Creole Wants, What a Creole Needs examines how community priorities should shape the tasks researchers choose. Her work on multilingual data quality connects these concerns to the resources used to train and evaluate models.

Multilingual model security

Testing privacy leakage through text embeddings and how vulnerabilities differ across languages.

Security research ethics

Examining harm minimisation and responsible disclosure in NLP security research.

Lower-resourced NLP

Developing and evaluating language technology for Creole and other lower-resourced languages, with attention to community priorities.

Selected work

5 representative papers

Transactions of the ACLJournal article2025

NLP Security and Ethics, in the Wild

Heather Lent, Erick Galinkin, Yiyi Chen, Jens Myrup Pedersen, Leon Derczynski, and Johannes Bjerva

Audits ethical practice in NLP security and develops concrete guidance for harm minimisation and responsible disclosure.

  • Security, Privacy & Safety
  • Communities, Domains & Consequences
ACL 2026Conference paper2026

How Good is Your Wikipedia? Auditing Data Quality for Low-resource and Multilingual NLP

Kushal Tatariya, Artur Kulmizev, Wessel Poelman, Esther Ploeger, Marcel Bollmann, Johannes Bjerva, Jiaming Luo, Heather Lent, and Miryam de Lhoneux

Audits all non-English Wikipedia editions and shows why data quality—not language coverage alone—must be a first-class concern in multilingual NLP.

  • Multilingual & Lower-Resource NLP
  • Factuality, Reliability & Evaluation
Transactions of the ACLJournal article2024

CreoleVal: Multilingual Multitask Benchmarks for Creoles

Heather Lent, Kushal Tatariya, Raj Dabre, Yiyi Chen, Marcell Fekete, Esther Ploeger, Li Zhou, Ruth-Ann Armstrong, Abee Eijansantos, Catriona Malau, Hans Erik Heje, Ernests Lavrinovics, Diptesh Kanojia, Paul Belony, Marcel Bollmann, Loïc Grobol, Miryam de Lhoneux, Daniel Hershcovich, Michel DeGraff, Anders Søgaard, and Johannes Bjerva

  • Multilingual & Lower-Resource NLP
  • Communities, Domains & Consequences
LREC 2022Conference paper2022

What a Creole Wants, What a Creole Needs

Heather Lent, Kelechi Ogueji, Miryam de Lhoneux, Orevaoghene Ahia, and Anders Søgaard

  • Multilingual & Lower-Resource NLP
  • Communities, Domains & Consequences

Supervision and collaboration

Research with Heather Lent

Heather welcomes projects on multilingual model security, privacy risks, and security research ethics, as well as lower-resourced NLP and evaluation.