Defensive Approximation: Securing CNNs using Approximate Computing

1 code implementation • 13 Jun 2020 • Amira Guesmi, Ihsen Alouani, Khaled Khasawneh, Mouna Baklouti, Tarek Frikha, Mohamed Abid, Nael Abu-Ghazaleh

We show that our approximate computing implementation achieves robustness across a wide range of attack scenarios.

Spectre Returns! Speculation Attacks using the Return Stack Buffer

1 code implementation • 20 Jul 2018 • Esmaeil Mohammadian Koruyeh, Khaled Khasawneh, Chengyu Song, Nael Abu-Ghazaleh

In particular, on Core-i7 Skylake and newer processors (but not on Intel's Xeon processor line), a patch called RSB refilling is used to address a vulnerability when the RSB underfills; this defense interferes with SpectreRSB's ability to launch attacks that switch into the kernel.

Cryptography and Security