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What Does an LLM-Agent Leaderboard Rank Actually Compare?
A methodological study shows close LLM-agent leaderboard rank gaps on SWE-bench and similar benchmarks often do not support superiority claims.
The paper defines an estimand-aware pairwise procedure for comparing agents, checking common support and applying explicit uncertainty rules and practical margins. Across SWE-bench, AgentRewardBench, and tau2-bench, close rank differences are frequently unresolved, and proxy labels or utility rules can change which system is selected. The authors argue a leaderboard score summarizes a released evaluation but does not by itself justify pairwise superiority conclusions.
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Thomson Reuters Court Software Breach May Have Exposed SSNs and Sealed Data
Unauthorized access to Thomson Reuters' C-Track court platform may have exposed SSNs and sealed records across 11 US states, USVI, and Ontario.
Thomson Reuters' West Publishing disclosed that an unauthorized party obtained files from the C-Track court case management platform starting in March 2026, with access to one environment running from March 1 through June 29, 2026 per Montana's account. Notices name roughly 24 court bodies across 11 US states, the US Virgin Islands, and Ontario, including appellate courts in Minnesota, Ohio, Montana, and Pennsylvania. Exposed data may include names, Social Security numbers, driver's license numbers, dates of birth, medical and health insurance information, and confidential or sealed court records. The company is offering 12 months of Experian or TransUnion monitoring, and courts disagree over whether the vendor's backup cloud environment or the production platform was accessed.
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Thomson Reuters reveals breach that exposed U.S. and Canadian court records
Thomson Reuters disclosed a C-Track breach exposing court records and personal data across at least 12 US states, US Virgin Islands, and Canada.
Thomson Reuters discovered unauthorized activity in its C-Track court case management platform on June 30, 2026, tracing the intrusion to March 2026. Affected systems include Ontario's three courts, Wyoming's entire state judiciary, and appellate and supreme courts across at least 12 US states plus the US Virgin Islands. Exposed records may include names, Social Security numbers, driver's license numbers, medical information, dates of birth, and health insurance details, with some sealed court information possibly affected. The company is offering 12 months of free credit monitoring and reports no evidence of fraud so far; attribution and access method remain unknown.
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