Annotation-Based Static Analysis for Personal Data Protection. - Kalle Hjerppe; Jukka Ruohonen; Ville Leppänen (Privacy and Identity Management, 2019)

The General Data Protection Regulation: Requirements, Architectures, and Constraints. - Kalle Hjerppe; Jukka Ruohonen; Ville Leppänen (RE, 2019)

Predicting the Amount of GDPR Fines. - Jukka Ruohonen; Kalle Hjerppe (COUrT@CAiSE, 2020)

Extracting Layered Privacy Language Purposes from Web Services. - Kalle Hjerppe; Jukka Ruohonen; Ville Leppänen (EuroS&P Workshops, 2020)

A Large-Scale Security-Oriented Static Analysis of Python Packages in PyPI. - Jukka Ruohonen; Kalle Hjerppe; Kalle Rindell (PST, 2021)

The GDPR enforcement fines at glance. - Jukka Ruohonen; Kalle Hjerppe (Inf. Syst., 2022)

Extracting LPL privacy policy purposes from annotated web service source code. - Kalle Hjerppe; Jukka Ruohonen; Ville Leppänen (Softw. Syst. Model., 2023)

An Exploratory Case Study on Data Breach Journalism. - Jukka Ruohonen; Kalle Hjerppe; Maximilian von Zastrow (ARES, 2024)

Crisis Communication in the Face of Data Breaches. - Jukka Ruohonen; Kalle Hjerppe; Katleena Kortesuo (CoRR, 2024)

The Potential of Citizen Platforms for Requirements Engineering of Large Socio-Technical Software Systems. - Jukka Ruohonen; Kalle Hjerppe (REFSQ, 2025)

A Mapping Analysis of Requirements Between the CRA and the GDPR. - Jukka Ruohonen; Kalle Hjerppe; Eun-Young Kang 001 (CoRR, 2025)