In the underground economy, time is money. A fraudster might have a list of 100,000 credit cards stolen from a compromised database. Trying to use them all blindly would result in low success rates and quick bans.
with the stolen key in the Authorization: Bearer sk_live_... header. sk checker full
: The script uses each key to make an HTTPS request. Response : 200 OK : The key is "Live." 401 Unauthorized : The key is "Dead" or invalid. How To Get Stripe API Key (QUICK Method) In the underground economy, time is money