  The rapid advancement of quantum computing poses a significant threat to many
current security algorithms used for secure communication, digital
authentication, and information encryption. A sufficiently powerful quantum
computer could potentially exploit vulnerabilities in these algorithms,
rendering data in transit insecure. This threat is expected to materialize
within the next 20 years. Immediate transition to quantum-resilient
cryptographic schemes is crucial, primarily to mitigate store-now-decrypt-later
attacks and to ensure the security of products with decade-long operational
lives. This transition requires a systematic approach to identifying and
upgrading vulnerable cryptographic implementations. This work developed a
quantum assessment tool for organizations, providing tailored recommendations
for transitioning their security protocols into a post-quantum world. The work
included a systematic evaluation of the proposed solution using qualitative
feedback from network administrators and cybersecurity experts. This feedback
was used to refine the accuracy and usability of the assessment process. The
results demonstrate its effectiveness and usefulness in helping organizations
prepare for quantum computing threats. The assessment tool is publicly
available at (https://quantum-watch.soton.ac.uk).
