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Alohomora: Protecting files from ransomware attacks using fine-grained i/o whitelisting
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Web of Science
Cited 1 time in Scopus
- Authors
- Issue Date
- 2022-06
- Publisher
- Association for Computing Machinery, Inc
- Citation
- HotStorage 2022 - Proceedings of the 2022 14th ACM Workshop on Hot Topics in Storage and File Systems, pp.113-118
- Abstract
- © 2022 ACM.We propose a novel whitelist-based anti-ransomware solution called alohomora. Alohomora is based on our observation that an I/O activity of an application can be an effective abstraction level for managing I/O whitelisting. In alohomora, when a write request is sent to an SSD, its program context value (which is supported by a host CPU register) is passed to the SSD. The SSD checks if the request was pre-approved using the program context value, thus preventing ransomware from modifying files in the SSD. Our experimental results using a prototype alohomora system show that alohomora can achieve a strong security level against sophisticated ransomware attacks without degrading I/O performance.
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