European companies' bitcoin treasury strategies are likely to be difficult to replicate directly from Michael Saylor's Strategy model, an analysis said. Firms are designing separate bitcoin-linked financing structures amid shallower capital markets and stricter regulation than in the United States. Speakers at Paris Blockchain Week 2026 said differences in market size, rules and investors make direct copying hard. Holdings are rising but remain fragmented among small and mid-cap companies, with several reporting unrealised losses.

A Microsoft Excel security flaw first reported 18 years ago is still being exploited in real-world attacks, highlighting risks for organisations running unsupported software. The U.S. Cybersecurity and Infrastructure Security Agency added CVE-2009-0238 to its catalogue of known exploited vulnerabilities and told U.S. federal civilian agencies to complete mitigation by April 28. The bug affects older Excel and Office components, while newer Excel versions are not affected.