Seth Hall

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Much of the Internet's end-to-end security relies on the SSL/TLS protocol along with its underlying X.509 certificate infrastructure. However, the system remains quite brittle due to its liberal delegation of signing authority: a single compromised certification authority undermines trust globally. Several recent high-profile incidents have demonstrated(More)
For network intrusion detection systems it is becoming increasingly difficult to reliably report today's complex attacks without having external context at hand. Unfortunately, however, today's IDS cannot readily integrate intelligence, such as dynamic blacklists, into their operation. In this work, we introduce a fundamentally new capability into IDS(More)
Current speech recognition software allows exam-specific standard reports to be prepopulated into the dictation field based on the radiology information system procedure code. While it is thought that prepopulating reports can decrease the time required to dictate a study and the overall number of errors in the final report, this hypothesis has not been(More)
statistics represent a key primitive for profiling and protecting operational networks. Many network operators routinely measure properties such as throughput, traffic mix, and heavy hitters. Likewise, security monitoring often deploys statistical anomaly detectors that trigger, e.g., when a source scans the local IP address range, or exceeds a threshold of(More)
The SSL/TLS protocol suite constitutes the key building block of today's Internet security, providing encryption and authentication for end-to-end communication with its underlying X.509 certificate infrastructure. However, the system remains brittle due to its liberal delegation of signing authority: a single compromised certification authority undermines(More)
The purpose of this study was to evaluate and compare textual error rates and subtypes in radiology reports before and after implementation of department-wide structured reports. Randomly selected radiology reports that were generated following the implementation of department-wide structured reports were evaluated for textual errors by two radiologists.(More)
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