Old applications retain old security behavior. End-of-support policy must account for both protection and access.
Evaluation approach
Enforce minimum-version policy through trustworthy server checks. Define update routes and remaining functions.
Application example
After a critical fix, restrict high-risk actions in affected old versions and provide a clear update message.
Limits and considerations
An unverified client version string is insufficient evidence.
What remains available to older users?
Explain updates clearly with accessible links. Consider support and transaction-status retrieval so blocking does not leave lasting uncertainty.
Checks and decisions
- Set server policy
- Provide update routes
- Assess version evidence
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.