AppGP: an alternative structural representation for GP. - Nicholas Freitag McPhee; Nicholas J. Hopper (CEC, 1999)

Secure Human Identification Protocols. - Nicholas J. Hopper; Manuel Blum 001 (ASIACRYPT, 2001)

k-anonymous message transmission. - Luis von Ahn; Andrew Bortz; Nicholas J. Hopper (CCS, 2003)

CAPTCHA: Using Hard AI Problems for Security. - Luis von Ahn; Manuel Blum 001; Nicholas J. Hopper; John Langford 001 (EUROCRYPT, 2003)

Public Key Steganography. - Luis von Ahn; Nicholas J. Hopper (IACR Cryptol. ePrint Arch., 2003)

Timed-Release and Key-Insulated Public Key Encryption. - Jung Hee Cheon; Nicholas Hopper; Yongdae Kim; Ivan Osipkov (IACR Cryptol. ePrint Arch., 2004)

On Steganographic Chosen Covertext Security. - Nicholas Hopper (ICALP, 2005)

Covert two-party computation. - Luis von Ahn; Nicholas J. Hopper; John Langford 001 (STOC, 2005)

Robust Accounting in Decentralized P2P Storage Systems. - Ivan Osipkov; Peng Wang; Nicholas Hopper (ICDCS, 2006)

Selectively Traceable Anonymity. - Luis von Ahn; Andrew Bortz; Nicholas J. Hopper; Kevin O'Neill (Privacy Enhancing Technologies, 2006)

On the effectiveness of k;-anonymity against traffic analysis and surveillance. - Nicholas Hopper; Eugene Y. Vasserman (WPES, 2006)

From Weak to Strong Watermarking. - Nicholas Hopper; David Molnar; David A. Wagner 001 (IACR Cryptol. ePrint Arch., 2006)

SilentKnock: Practical, Provably Undetectable Authentication. - Eugene Y. Vasserman; Nicholas Hopper; John Laxson; James Tyra (ESORICS, 2007)

Combating Double-Spending Using Cooperative P2P Systems. - Ivan Osipkov; Eugene Y. Vasserman; Nicholas Hopper; Yongdae Kim (ICDCS, 2007)

Don't Clog the Queue! Circuit Clogging and Mitigation in P2P Anonymity Schemes. - Jon McLachlan; Nicholas Hopper (Financial Cryptography, 2008)

Breaking and Provably Fixing Minx. - Erik Shimshock; Matt Staats; Nicholas Hopper (Privacy Enhancing Technologies, 2008)

Attacking the Kad network. - Peng Wang; James Tyra; Eric Chan-Tin; Tyson Malchow; Denis Foo Kune; Nicholas Hopper; Yongdae Kim (SecureComm, 2008)

Provably Secure Timed-Release Public Key Encryption. - Jung Hee Cheon; Nicholas Hopper; Yongdae Kim; Ivan Osipkov (ACM Trans. Inf. Syst. Secur., 2008)

Towards complete node enumeration in a peer-to-peer botnet. - Brent ByungHoon Kang; Eric Chan-Tin; Christopher P. Lee 001; James Tyra; Hun Jeong Kang; Chris Nunnery; Zachariah Wadler; Greg Sinclair; Nicholas Hopper; David Dagon; Yongdae Kim (AsiaCCS, 2009)

Scalable onion routing with torsk. - Jon McLachlan; Andrew Tran; Nicholas Hopper; Yongdae Kim (CCS, 2009)

Membership-concealing overlay networks. - Eugene Y. Vasserman; Rob Jansen; James Tyra; Nicholas Hopper; Yongdae Kim (CCS, 2009)

Why Kad Lookup Fails. - Hun Jeong Kang; Eric Chan-Tin; Nicholas Hopper; Yongdae Kim (Peer-to-Peer Computing, 2009)

The Frog-Boiling Attack: Limitations of Anomaly Detection for Secure Network Coordinate Systems. - Eric Chan-Tin; Daniel Feldman; Nicholas Hopper; Yongdae Kim (SecureComm, 2009)

On the risks of serving whenever you surf: vulnerabilities in Tor's blocking resistance design. - Jon McLachlan; Nicholas Hopper (WPES, 2009)

Hashing it out in public: common failure modes of DHT-based anonymity schemes. - Andrew Tran; Nicholas Hopper; Yongdae Kim (WPES, 2009)

Silent Knock : practical, provably undetectable authentication. - Eugene Y. Vasserman; Nicholas Hopper; James Tyra (Int. J. Inf. Sec., 2009)

Provably Secure Steganography. - Nicholas J. Hopper; Luis von Ahn; John Langford 001 (IEEE Trans. Computers, 2009)

Secure latency estimation with treeple. - Eric Chan-Tin; Nicholas Hopper (CCS, 2010)

Recruiting new tor relays with BRAIDS. - Rob Jansen; Nicholas Hopper; Yongdae Kim (CCS, 2010)

Designs to account for trust in social network-based sybil defenses. - Abedelaziz Mohaisen; Nicholas Hopper; Yongdae Kim (CCS, 2010)

Losing control of the internet: using the data plane to attack the control plane. - Max Schuchard; Abedelaziz Mohaisen; Denis Foo Kune; Nicholas Hopper; Yongdae Kim; Eugene Y. Vasserman (CCS, 2010)

Jack: scalable accumulator-based nymble system. - Zi Lin; Nicholas Hopper (WPES, 2010)

Balancing the shadows. - Max Schuchard; Alexander W. Dean; Victor Heorhiadi; Nicholas Hopper; Yongdae Kim (WPES, 2010)

How much anonymity does network latency leak? - Nicholas Hopper; Eugene Y. Vasserman; Eric Chan-Tin (ACM Trans. Inf. Syst. Secur., 2010)

BNymble: More Anonymous Blacklisting at Almost No Cost (A Short Paper). - Peter Lofgren; Nicholas Hopper (Financial Cryptography, 2011)

Understanding Social Networks Properties for Trustworthy Computing. - Abedelaziz Mohaisen; Huy Tran; Nicholas Hopper; Yongdae Kim (ICDCS Workshops, 2011)

Keep your friends close: Incorporating trust into social network-based Sybil defenses. - Abedelaziz Mohaisen; Nicholas Hopper; Yongdae Kim (INFOCOM, 2011)

Accurate and Provably Secure Latency Estimation with Treeple. - Eric Chan-Tin; Nicholas Hopper (NDSS, 2011)

FAUST: efficient, TTP-free abuse prevention by anonymous whitelisting. - Peter Lofgren; Nicholas Hopper (WPES, 2011)

The Frog-Boiling Attack: Limitations of Secure Network Coordinate Systems. - Eric Chan-Tin; Victor Heorhiadi; Nicholas Hopper; Yongdae Kim (ACM Trans. Inf. Syst. Secur., 2011)

KoNKS: konsensus-style network koordinate system. - Eric Chan-Tin; Nicholas Hopper (AsiaCCS, 2012)

On the mixing time of directed social graphs and security implications. - Abedelaziz Mohaisen; Huy Tran; Nicholas Hopper; Yongdae Kim (AsiaCCS, 2012)

Routing around decoys. - Max Schuchard; John Geddes; Christopher Thompson 002; Nicholas Hopper (CCS, 2012)

Efficient Private Proximity Testing with GSM Location Sketches. - Zi Lin; Denis Foo Kune; Nicholas Hopper (Financial Cryptography, 2012)

Shadow: Running Tor in a Box for Accurate and Efficient Experimentation. - Rob Jansen; Nicholas Hopper (NDSS, 2012)

Location leaks over the GSM air interface. - Denis Foo Kune; John Kölndorfer; Nicholas Hopper; Yongdae Kim (NDSS, 2012)

Taking Routers Off Their Meds: Why Assumptions Of Router Stability Are Dangerous. - Max Schuchard; Christopher Thompson 002; Nicholas Hopper; Yongdae Kim (NDSS, 2012)

Methodically Modeling the Tor Network. - Rob Jansen; Kevin S. Bauer; Nicholas Hopper; Roger Dingledine (CSET, 2012)

Throttling Tor Bandwidth Parasites. - Rob Jansen; Paul F. Syverson; Nicholas Hopper (USENIX Security Symposium, 2012)

New Attacks on Timing-based Network Flow Watermarks. - Zi Lin; Nicholas Hopper (USENIX Security Symposium, 2012)

One-Way Indexing for Plausible Deniability in Censorship Resistant Storage. - Eugene Y. Vasserman; Victor Heorhiadi; Nicholas Hopper; Yongdae Kim (FOCI, 2012)

Cover your ACKs: pitfalls of covert channel censorship circumvention. - John Geddes; Max Schuchard; Nicholas Hopper (CCS, 2013)

Peer Pressure: Exerting Malicious Influence on Routers at a Distance. - Max Schuchard; Christopher Thompson 002; Nicholas Hopper; Yongdae Kim (ICDCS, 2013)

rBridge: User Reputation based Tor Bridge Distribution with Privacy Preservation. - Qiyan Wang; Zi Lin; Nikita Borisov; Nicholas Hopper (NDSS, 2013)

How Low Can You Go: Balancing Performance with Anonymity in Tor. - John Geddes; Rob Jansen; Nicholas Hopper (Privacy Enhancing Technologies, 2013)

Improved group off-the-record messaging. - Hong Liu; Eugene Y. Vasserman; Nicholas Hopper (WPES, 2013)

Attacking the kad network - real world evaluation and high fidelity simulation using DVN. - Peng Wang; James Tyra; Eric Chan-Tin; Tyson Malchow; Denis Foo Kune; Nicholas Hopper; Yongdae Kim (Secur. Commun. Networks, 2013)

Vampire Attacks: Draining Life from Wireless Ad Hoc Sensor Networks. - Eugene Y. Vasserman; Nicholas Hopper (IEEE Trans. Mob. Comput., 2013)

Challenges in Protecting Tor Hidden Services from Botnet Abuse. - Nicholas Hopper (Financial Cryptography, 2014)

IMUX: Managing Tor Connections from Two to Infinity, and Beyond. - John Geddes; Rob Jansen; Nicholas Hopper (WPES, 2014)

WPES 2015: The 14th Workshop on Privacy in the Electronic Society. - Nicholas Hopper; Rob Jansen (CCS, 2015)

Hijacking the Vuze BitTorrent network: all your hop are belong to us. - Eric Chan-Tin; Victor Heorhiadi; Nicholas Hopper; Yongdae Kim (IET Inf. Secur., 2015)

The Cost of the Path Not Taken. - Max Schuchard; John Geddes; Mike Schliep; Nicholas Hopper (GLOBECOM, 2016)

ABRA CADABRA: Magically Increasing Network Utilization in Tor by Avoiding Bottlenecks. - John Geddes; Mike Schliep; Nicholas Hopper (WPES@CCS, 2016)

Anarchy in Tor: Performance Cost of Decentralization. - John Geddes; Mike Schliep; Nicholas Hopper (CoRR, 2016)

E-Embargoes: Discouraging the Deployment of Traffic Manipulating Boxes With Economic Incentives. - Max Schuchard; Nicholas Hopper (CoRR, 2016)

Mailet: Instant Social Networking under Censorship. - Shuai Li; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2016)

Is Bob Sending Mixed Signals? - Michael Schliep; Ian Kariniemi; Nicholas Hopper (WPES@CCS, 2017)

Measuring Information Leakage in Website Fingerprinting Attacks. - Shuai Li; Huajun Guo; Nicholas Hopper (CoRR, 2017)

Traffic Analysis with Deep Learning. - Se Eun Oh; Saikrishna Sunkam; Nicholas Hopper (CoRR, 2017)

PeerFlow: Secure Load Balancing in Tor. - Aaron Johnson 001; Rob Jansen; Nicholas Hopper; Aaron Segal; Paul Syverson (Proc. Priv. Enhancing Technol., 2017)

Fingerprinting Keywords in Search Queries over Tor. - Se Eun Oh; Shuai Li; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2017)

Privacy-Preserving Dynamic Learning of Tor Network Traffic. - Rob Jansen; Matthew Traudt; Nicholas Hopper (CCS, 2018)

Measuring Information Leakage in Website Fingerprinting Attacks and Defenses. - Shuai Li; Huajun Guo; Nicholas Hopper (CCS, 2018)

End-to-End Secure Mobile Group Messaging with Conversation Integrity and Minimal Metadata Leakage. - Michael Schliep; Nicholas Hopper (CCS, 2018)

MP3: A More Efficient Private Presence Protocol. - Rahul Parhi; Michael Schliep; Nicholas Hopper (Financial Cryptography, 2018)

End-to-End Secure Mobile Group Messaging with Conversation Integrity and Deniability. - Michael Schliep; Nicholas Hopper (IACR Cryptol. ePrint Arch., 2018)

Consistent Synchronous Group Off-The-Record Messaging with SYM-GOTR. - Michael Schliep; Eugene Y. Vasserman; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2018)

p1-FP: Extraction, Classification, and Prediction of Website Fingerprints with Deep Learning. - Se Eun Oh; Saikrishna Sunkam; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2019)

RegulaTOR: A Powerful Website Fingerprinting Defense. - James K. Holland; Nicholas Hopper (CoRR, 2020)

Grades of Trust in Multiparty Computation. - Jaskaran V. Singh; Nicholas Hopper (IACR Cryptol. ePrint Arch., 2021)

GANDaLF: GAN for Data-Limited Fingerprinting. - Se Eun Oh; Nate Mathews; Mohammad Saidur Rahman 002; Matthew Wright 001; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2021)

DeepCoFFEA: Improved Flow Correlation Attacks on Tor via Metric Learning and Amplification. - Se Eun Oh; Taiji Yang; Nate Mathews; James K. Holland; Mohammad Saidur Rahman 002; Nicholas Hopper; Matthew Wright 001 (SP, 2022)

Padding-only Defenses Add Delay in Tor. - Ethan Witwer; James K. Holland; Nicholas Hopper (WPES@CCS, 2022)

RegulaTor: A Straightforward Website Fingerprinting Defense. - James K. Holland; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2022)

SoK: A Critical Evaluation of Efficient Website Fingerprinting Defenses. - Nate Mathews; James K. Holland; Se Eun Oh; Mohammad Saidur Rahman 002; Nicholas Hopper; Matthew Wright 001 (SP, 2023)

Poster: No safety in numbers: traffic analysis of sealed-sender groups in Signal. - Eric Brigham; Nicholas Hopper (CoRR, 2023)

Committee Moderation on Encrypted Messaging Platforms. - Alistair Pattison; Nicholas Hopper (CoRR, 2023)

Poster: Gift or Curse? Safety Slider Settings in Tor Website Fingerprinting. - Joel Osher; James K. Holland; Nicholas Hopper (CCS, 2024)

VCVio: A Formally Verified Forking Lemma and Fiat-Shamir Transform, via a Flexible and Expressive Oracle Representation. - Devon Tuma; Nicholas Hopper (IACR Cryptol. ePrint Arch., 2024)

Laserbeak: Evolving Website Fingerprinting Attacks With Attention and Multi-Channel Feature Representation. - Nate Mathews; James K. Holland; Nicholas Hopper; Matthew Wright 001 (IEEE Trans. Inf. Forensics Secur., 2024)

DeTorrent: An Adversarial Padding-only Traffic Analysis Defense. - James K. Holland; Jason Carpenter; Se Eun Oh; Nicholas Hopper (Proc. Priv. Enhancing Technol., 2024)