The harvest-now-decrypt-later threat means data stolen today may become readable in the future. This is especially critical in sectors with long data-retention windows such as healthcare, finance, and public services.
Strategic minimum for 2026
- Cryptographic inventory: where are vulnerable algorithms used?
- Migration roadmap: which systems transition first?
- Hybrid phase: classical plus post-quantum signatures during transition
In ViVeSec architecture, post-quantum thinking is reflected in backup integrity and signature strategy as an engineering layer, not a marketing slogan.
