Covert Channels Can Be Useful! – Layering Authentication Channels to Provide Covert Communication? Mohammed H. Almeshekah, Mikhail J. Atallah, and Eugene H. Spafford Purdue University CERIAS 656 Oval Drive, West Lafaye

Source URL: spaf.cerias.purdue.edu

• Computer access control
• Computer security
• Security
• Phishing
• Password
• Multi-factor authentication
• Authentication
• Transaction authentication number
• Passwd
• One-time password
• Security token

Translation-Based Steganography Christian Grotho Krista Grotho Ludmila Alkhutova Ryan Stutsman Mikhail Atallah CERIAS, Purdue University {christian,krista}@grothoff.org, {lalkhuto,rstutsma}@purdue.edu,

Source URL: rstutsman.github.io

Translation-Based Steganography Christian Grotho Krista Grotho Ludmila Alkhutova Ryan Stutsman Mikhail Atallah CERIAS, Purdue University {christian,krista}@grothoff.org, {lalkhuto,rstutsma}@purdue.edu,

Source URL: rstutsman.github.io

Dynamic and Efficient Key Management for Access Hierarchies ∗ Mikhail J. Atallah, Keith B. Frikken, and Marina Blanton Department of Computer Science

Source URL: www.cse.nd.edu

Efficient Techniques for Realizing Geo-Spatial Access Control Mikhail J. Atallah∗ Marina Blanton†

Source URL: www.cse.nd.edu

Private Combinatorial Group Testing Mikhail J. Atallah∗ Keith B. Frikken Marina Blanton

Source URL: www.cse.nd.edu

Achieving Fairness in Private Contract Negotiation ? Keith Frikken and Mikhail Atallah CERIAS and Department of Computer Sciences Purdue University

Source URL: fc05.ifca.ai

ViWiD : Visible Watermarking based Defense against Phishing Mercan Topkara Ashish Kamra Mikhail J. Atallah Cristina Nita-Rotaru Center for Education and Research in Information Assurance Computer Sciences Department Purd

Source URL: homes.cerias.purdue.edu

Succinct Specifications of Portable Document Access Policies ∗ Marina Bykova, Mikhail Atallah CERIAS and Computer Sciences Department

Source URL: www.cse.nd.edu

Remote Revocation of Smart Cards in a Private DRM System∗ Keith Frikken Mikhail Atallah Marina Bykova

Source URL: www.cse.nd.edu