Artificial CAPTCHA Cracking Tool: CAPTCHA Cracking + Proxy IP Dual Solution

I stepped over this CAPTCHA cracking pit for you.

The biggest headache in CAPTCHA recognition is not the algorithm, but the other server'sIP restriction mechanism. The last time I took my own computer and tried the CAPTCHA 20 times in a row, the result was that the whole IP was blacklisted. This time to understand, only will crack the code is not enough, must be with the proxy IP in order to play around.

First of all, a real case: an e-commerce platform to grab the coupon script, a single IP request more than 10 times directly sealed 24 hours. Later changed to use proxy IP pool rotation, with CAPTCHA recognition module, the success rate directly doubled 8 times. The doorway here isIP resources to play a combo with recognition technologyThe

Three minefields to avoid when choosing a proxy IP

There are many proxy IP service providers on the market, but there are not many reliable ones. According to my experience, these three pits should not be stepped on:

1. self-built proxy servers ❌ (high maintenance costs to doubt life)
2. free proxy IP ❌ (slow as a snail, but also vulnerable to anti-climbing)
3. Opaque IP pool ❌ (do not even label the IP survival rate should not be used)

This is a must.ipipgoHome service, they got a dynamic residential IP pool. The real test can call 5000+ valid IPs in a single day, and each IP can survive for up to 2 hours. The best thing is that theirIP Survival Rate KanbanThe real-time display of the number of available IPs is much more realistic than those service providers who hide it.

Hands On Hacking System

Take the Python environment as an example, and build the basic framework in three steps:

 Install the necessary libraries
pip install requests pytesseract opencv-python

 Example of a proxy IP call (using ipipgo as an example)
import requests

def get_proxy(): { return {proxy(): {proxy(): {proxy(): {proxy()
    return {
        'http': 'http://用户名:密码@gateway.ipipgo.com:端口', 'https': 'http://用户名:密码@gateway.ipipgo.com:端口'
        'https': 'http://用户名:密码@gateway.ipipgo.com:端口'
    }

response = requests.get('destination URL', proxies=get_proxy())

Be careful to matchAutomatic IP switching mechanismIt is recommended to set the IP to be changed every 5 requests. ipipgo's API supports getting new IPs on demand, which is much more flexible than a fixed IP pool. Remember to add an exception retry in the code to automatically switch to the next set of proxies in case of IP blocking.

Real-world QA quick questions and answers

Q: What should I do if my proxy IP is slow?
A: Choose the service provider to look at the location of the server room, like ipipgo has domestic 30 + provincial nodes. If you are doing domestic business, don't choose an overseas agent, the latency difference is more than 10 times.

Q: How to avoid proxy IP blocking?
A: three tricks: 1) set the request interval of more than 2 seconds 2) each time with a different User-Agent 3) with ipipgo's high stash of proxy mode (measured anti-blocking rate of 92%)

Q: CAPTCHA recognition rate is high and low?
A: It is recommended that dual-engine recognition, such as Tesseract + CNN model. Encounter sliding CAPTCHA can be on selenium simulation operation, remember to match ipipgo's browser fingerprint camouflage function.

These details make the difference.

Many newbies overlookIP Usage Log Analysis, suggesting weekly statistics on IP banning rates. Here's a comparison table I made with ipipgo backend data:

See the doorway? Residential IP is the way to go. ipipgo'sDynamic Residential IP PoolSupport for pay-per-use, small-scale business with this most cost-effective. Don't believe those monthly packages, 90% IP can not be used pure waste.

Finally said a tawdry operation: encounter particularly difficult to get the CAPTCHA system, you can first use ipipgo IP to launch 10 normal visits, and then mixed into the crack request, so that the anti-climbing mechanism is not easy to trigger. This trick personally tested effective, but the specific proportion of their own more debugging.