This volume contains the abstracts of the posters accepted and presented at the EuroS&P 2024 conference, which was held on July 8-12, 2024, in Vienna. Following the tradition initiated with the 2022 edition of the conference, these proceedings are published on Zenodo (https://zenodo.org), an open research repository operated by CERN, which enables sharing and preserving of research outputs. The poster session of Euro S&P is conceived as an opportunity for security and privacy researchers to share their recent results, and to obtain valuable feedback on their ongoing work from participants at the conference. In total, 10 abstracts were submitted to the poster session, which underwent a lightweight review process. In particular, reviews were aimed at checking the coherence of the abstracts with the scope of Euro S&P, rather than providing in-depth technical feedback as for aregular submission. Each abstract was reviewed by at least two members of the program committee. After the review phase, the program committee decided to accept all submitted abstracts. We would like to thank all the authors for the creativity and effort that went into their submissions, and especially the poster presenters (including the invited posters’ presenters), for their tireless engagement with the attendees during the lively poster session. We are also grateful to Edgar Weippl and Matteo Maffei, the general chairs; Sebastian Schrittwieser and Victoria Buchsbaum, the publication chairs; Herbert Bos and Ben Stock, the program chairs; Sandra Wotawa and Yvonne Poul, the financial chairs; and to everyone else who helped facilitate the poster session. Finally, we are also grateful to Ivan Liang for setting up the HotCRP platform for managing the submission process, and to the web chair Sandra Wotawa for updating the website with the updates related to the call for posters.