Lack of feature is not a bug. Moreover that’s more something that the Starknet Core should implement since there is no way for Ark to have trusted data, preventing double spending. Finally, there is no real root cause in those reports, only suppositions that something bad can happen.
The contest is live. Earn rewards by submitting a finding.
Submissions are being reviewed by the community.
This is your time to appeal against judgements on your submissions.
Appeals are being carefully reviewed by our judges.