CCSW 2023: The ACM Cloud Computing Security Workshop
in conjunction with the ACM Conference on Computer and Communications Security (CCS)

November 26, 2023
Copenhagen, Denmark

Clouds and massive-scale computing infrastructures are starting to dominate computing and will likely continue to do so for the foreseeable future. Major cloud operators are now comprising millions of cores hosting substantial fractions of corporate and government IT infrastructure. CCSW is the world's premier forum bringing together researchers and practitioners in all security aspects of cloud-centric and outsourced computing, including:
  • side channel attacks
  • practical cryptographic protocols for cloud security
  • secure cloud resource virtualization mechanisms
  • secure data management outsourcing (e.g., database as a service)
  • practical privacy and integrity mechanisms for outsourcing
  • foundations of cloud-centric threat models
  • secure computation outsourcing
  • remote attestation mechanisms in clouds
  • sandboxing and VM-based enforcements
  • trust and policy management in clouds
  • secure identity management mechanisms
  • new cloud-aware web service security paradigms and mechanisms
  • cloud-centric regulatory compliance issues and mechanisms
  • business and security risk models and clouds
  • cost and usability models and their interaction with security in clouds
  • scalability of security in global-size clouds
  • trusted computing technology and clouds
  • binary analysis of software for remote attestation and cloud protection
  • network security (DOS, IDS etc.) mechanisms for cloud contexts
  • security for emerging cloud programming models
  • energy/cost/efficiency of security in clouds
  • machine learning for cloud protection
  • FHE for cloud systems
  • side channel attack and countermeasures on cloud systems
  • trust in cloud systems
  • remote attestation for cloud
CCSW especially encourages novel paradigms and controversial ideas that are not on the above list. The workshop has historically acted as a fertile ground for creative debate and interaction in security-sensitive areas of computing impacted by clouds.

Important Dates

Submissions due: July 31, 2023 (11:59pm anywhere in the world)
Author notification: August 31, 2023
Camera-ready: September 5, 2023
Workshop: November 26, 2023


Submit your paper

CCSW is soliciting full papers of up to 12 pages which will be judged based on the quality per page. Thus, shorter, high-quality papers are encouraged, and papers may be perceived as too long if they are repetitive or verbose. Submissions must be single PDF files, no more than 12 pages long in double-column ACM format (the sigconf template from, with a simpler version at, excluding the bibliography, well-marked appendices, and supplementary material. Note that reviewers are not required to read the appendices or any supplementary material. Authors should not change the font or the margins of the ACM format. Submissions not following the required format may be rejected without review. Submissions not meeting these guidelines risk rejection without consideration of their merits. Accepted papers will be published by the ACM Press and/or the ACM Digital Library.

Submissions must be anonymous, and authors should refer to their previous work in the third-person. Submissions must not substantially overlap with papers that have been published or that are simultaneously submitted to a journal or a conference with proceedings. Each accepted paper must be presented by one registered author. Submissions not meeting these guidelines risk immediate rejection. For questions about these policies, please contact the chairs.

One best paper award will be presented during the workshop.

Proposals for panels are also solicited. The proposals are to be concise, up to 2 pages in length, describe the handled topics, name potential panelists and briefly scope the panel for CCSW. Disruptive and controversial panels are particularly encouraged. Please submit your panel proposals as a PDF by email at


9:00 - 9:00
Welcome from CCSW 2023 organizers Francesco Regazzoni and Apostolos Fournaris

9:05 - 10:00 Keynote Talk
Professor Mehdi B. Tahoori (Karlsruhe Institute of Technology)
Security Challenges and Opportunities of Cloud FPGAs

10:00 - 10:30 Coffee Break

10:30 - 11:00 CCSW Paper presentation Chair Francesco Regazzoni
10:30-11:00 Too Close for Comfort? Measuring Success of Sampled-Data Leakage Attacks Against Encrypted Search

11:00 - 12:30 Special Session “Robust and Trusted Internet Geolocation”
Organizers: Rami Puzis, Yuval Elovici, Asaf Shabtai, Junichi Suga, and Motoyoshi Sekiya
- 11:00-11:30 CDGeB: Cloud Data Geolocation Benchmark
- 11:30-12:00 Entangled Clouds: Measuring the Hosting Infrastructure of the Free Contents Web
- 12:00-12:30 Presentation of the winners the cloud data geolocation challenge

12:30 - 13:30 Lunch Break

13:30 - 15:30 CCSW Paper presentation Chair Apostolos Fournaris
13:30 – 14:00 Enterprise Cyber Threat Modeling and Simulation of Loss Events for Cyber Risk Quantification
14:00 – 14:30 Ambit: Verification of Azure RBAC
14:30 – 15:00 Now is the Time: Scalable and Cloud-supported Audio Conferencing using End-to-End Homomorphic Encryption
15:00 – 15:30 Optimizing 0-RTT Key Exchange with Full Forward Security

15:30 - 16:00 Coffee Break

16:00 - 17:00 Panel
Title: Data location and the issues of trust in cloud based services
Moderators: Francesco Regazzoni and Apostolos Fournaris
Panelists: Veelasha Moonsamy (Ruhr University Bochum), Mehdi B. Tahoori (Karlsruhe Institute of Technology), Ayoub Messous (Fujitsu), and Rami Puzis (BGU).


Please register
here on the main CCS website.



Francesco Regazzoni, University of Amsterdam (The Netherlands) and Università della Svizzera italiana (Switzerland)
Apostolos Fournaris, Industrial Systems Institute/Research Center ATHENA (Greece)


Anil Somayaji, Carleton University
Chenglu Jin, CWI Amsterdam
Dimitrios Papadopoulos, The Hong Kong
University of Science and Technology
Erik-Oliver Blass, Airbus
Fei Chen, Shenzhen University
Ghassan Karame, Ruhr University Bochum
Giorgos Vasiliadis, Hellenic Mediterranean
University and FORTH
Guoxing Chen, Shanghai Jiao Tong University
Hoda Maleki, Augusta University
Mayank Varia, Boston University
Meng Yu, Roosevelt University
Michael Zohner, Hochschule Fulda
Nicolas Alhaddad, Boston University
Paolo Palmieri, University College Cork
Reihaneh Safavi-Naini, University of Calgary
Sean Smith, Dartmouth College
Sisi Duan, Tsinghua University
Subhadeep Banik, Università della Svizzera italiana
Ulrich Rührmair, University of Connecticut
Xiaokuan Zhang, George Mason University
Xingliang YUAN, Monash University


Srdjan Capkun, ETH Zurich
Emiliano De Cristofaro, University College London
Marten van Dijk, Centrum Wiskunde & Informatica (CWI)
 Kristin Lauter, Facebook
Radu Sion, Stony Brook University
Yinqian Zhang, Southern University of Science and Technology (chair)


Interested in sponsoring CCSW (this or next year)? Please
contact us directly.

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