HOMARD: Hammering Off-Chip Memory Via Aggregate Power Rail Disclosure

Software-based microarchitectural attacks have mainly exploited timing differences to infer information from DRAM. However, defenses and optimizations can prevent timing-based approaches from resolving precise microarchitectural behaviors. We show that unprivileged millisecond- and...

$Ρ$Hammer: Reviving RowHammer Attacks on New Architectures Via Prefetching

Rowhammer is a critical vulnerability in dynamic random access memory DRAM that continues to pose a significant threat to various systems. However, we find that conventional load-based attacks are becoming highly ineffective on the most recent architectures such as Intel Alder and Raptor Lake. In...