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New PlunderVolt Attack Targets Intel SGX Enclaves by Tweaking CPU Voltage

New PlunderVolt Attack Targets Intel SGX Enclaves by Tweaking CPU Voltage
Dec 11, 2019
A team of cybersecurity researchers demonstrated a novel yet another technique to hijack Intel SGX, a hardware-isolated trusted space on modern Intel CPUs that encrypts extremely sensitive data to shield it from attackers even when a system gets compromised. Dubbed Plundervolt and tracked as CVE-2019-11157, the attack relies on the fact that modern processors allow frequency and voltage to be adjusted when needed, which, according to researchers, can be modified in a controlled way to induce errors in the memory by flipping bits. Bit flip is a phenomenon widely known for the Rowhammer attack wherein attackers hijack vulnerable memory cells by changing their value from 1 to a 0, or vice versa—all by tweaking the electrical charge of neighboring memory cells. However, since the Software Guard Extensions (SGX) enclave memory is encrypted, the Plundervolt attack leverages the same idea of flipping bits by injecting faults in the CPU before they are written to the memory. Plundervo

Researchers Implant "Protected" Malware On Intel SGX Enclaves

Researchers Implant "Protected" Malware On Intel SGX Enclaves
Feb 13, 2019
Cybersecurity researchers have discovered a way to hide malicious code in Intel SGX enclaves, a hardware-based memory encryption feature in modern processors that isolates sensitive code and data to protect it from disclosure or modification. In other words, the technique allows attackers to implant malware code in a secure memory that uses protection features of SGX which are otherwise designed to protect important data from prying eyes or from being tampered, even on a compromised system. Introduced with Intel's Skylake processors, SGX (Software Guard Extensions) allows developers to run selected application modules in a completely isolated secure region of memory, called enclaves, which are designed to be protected from processes running at higher privilege levels like the operating system, kernel, BIOS, SMM, hypervisor, etc. However, a team of researchers, some of whom were behind the discovery of the Spectre-Meltdown CPU flaws , managed to bypass this protection and g

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Transform Your Data Security Posture – Learn from SoFi's DSPM Success

Transform Your Data Security Posture – Learn from SoFi's DSPM Success
Nov 28, 2023Data Security / Posture Management
As cloud technology evolves, so does the challenge of securing sensitive data. In a world where data duplication and sprawl are common, organizations face increased risks of non-compliance and unauthorized data breaches. Sentra's DSPM (Data Security Posture Management) emerges as a comprehensive solution, offering continuous discovery and accurate classification of sensitive data in the cloud. This informative webinar, " Securing Sensitive Data Starts with Discovery and Classification: SoFi's DSPM Story " unveils the success story of SoFi, a pioneering cloud-native financial services provider, and its journey with Sentra's DSPM. It explores the challenges and triumphs in securing cloud data and a roadmap to implementing effective DSPM strategies in your organization. Expert Panel: Aviv Zisso:  As Director of Customer Success at Sentra, Aviv brings deep insights into data security needs and solutions. Pritam H Mungse:  SoFi's Director of Product Security, Pr
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