FAQs about use limits
What is the QPS limit for Captcha? What is the business impact when the limit is exceeded? Can the limit be changed?
1. Queries Per Second (QPS) is limited to 1,000 for ticket verification.
2. When QPS exceeds 1,000 for the ticket verification API calls, an error is returned (RequestLimitExceeded).
3. To change the limit, submit a ticket or contact us.
FAQs about features
How does Captcha block unusual requests?
During the verification, ten security protection mechanisms are used to defend against malicious activities of the black market. For more information, please see "Multi-dimensional defense" in Overview. Why can't Captcha effectively block unusual requests?
If you are troubled by black industry attacks and wish to intercept more abnormal requests, it is recommended to log in to the Captcha Console, select the verification to configure, click Captcha Details, go to the Configuration tab, and set the risk control level to: security first. After adjustment, the Captcha service will intercept verification requests with stricter risk control strategies. Does Captcha support multiple languages?
Captcha supports 23 languages. Configure the relevant parameters when integrating the client. For details, see Web Integration. Does Captcha support private deployment?
Captcha does not support private deployment.
FAQs about usage
Why are users prompted "Too many attempts. Try again later" after they correctly answer the verification questions?
Possible reasons and solutions are as follows:
The user is in an unusual environment and deemed suspicious by the policies. They can wait for 10-20 minutes or change the network environment and try again.
The user is malicious or in a malicious environment and is blocked by the policies.Captcha ensures secure verification using multi-dimensional policy models consisting of user environments, verification history, and device fingerprints.
Check whether the CaptchaAppId used for the business client integration belongs to a CAPTCHA created by the console. For how to create a valid CaptchaAppId, please see Operation Guide. If more user feedback indicates the above issues, it may be due to overly strict policy levels. It is recommended to log in to the Captcha Console, select the verification in use, click Captcha Details, go to the Configuration tab, and set the risk control level to: experience first. How can I grant permission to sub-accounts to use Captcha?
1. Log in to the Cloud Access Management console with your primary account, and click Policies on the left navigation pane to enter the policy management page. 2. Search for the QcloudCaptchaFullAccess policy, click "Associate User/User Group", select the users/user groups to associate in the "Select Users" box, and click OK.