CAPTCHA Cracking Software: Automatic Recognition Tool Recommendation

Why do I need a proxy for CAPTCHA?

Now engage in automation is the most headache of CAPTCHA interception, many friends use open source tools to toss half a day, the result is found just run a few minutes IP will be blocked. At this time it is necessary to rely onProxy IP Poolto cover up - as if the program had been given a million human masks, with a different identity for each visit.

Take our own ipipgo service as an example, the actual test with dynamic residential agent to do verification code recognition, the success rate can soar from 30% to 78%. Especially to do e-commerce price comparison of this kind of high-frequency operation of the project, do not need to use the agent, basically, is to the target site to send a person's head.

 Python Example: Polling with the ipipgo Proxy
import requests

proxy_list = [
    "http://user:pass@gateway.ipipgo.com:9020",
    "http://user:pass@gateway.ipipgo.com:9021"
]

for i in range(5): resp = requests.get("", "")
    resp = requests.get("https://target.com",
        proxies={"http": proxy_list[i%2]})
    print(f"{i+1}th request status code:", resp.status_code)

Three identification tools that work well in real life

Here are a few options that our tech department has tested, remember to use them with an agent:

How to put a proxy vest on a tool

Focusing on the ipipgo configuration trick, a lot of newbies get stuck in this part:

1. in the backgroundCreating a whitelistBinding server IP
2. electLong-lasting static proxiesDoing the login session
3. expense or outlayDynamic Residential IPImplementation of specific operations

For example, when doing automation with Selenium, remember to add proxy settings to the startup parameters:

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_argument("--proxy-server=http://gateway.ipipgo.com:9020")

driver = webdriver.Chrome(options=options)

First aid kit for common rollover problems

Q：Why was I blocked even though I used a proxy?
A: Check IP purity, don't use data center IP, change to ipipgo's residential proxy is more reliable!

Q: What should I do if the recognition results are always inaccurate?
A：给验证码接口加0.5-2秒随机，别让风控系统看出机器痕迹

Q: How many IPs do I need to prepare to be enough?
A：Ordinary projects with ipipgo's 500 IP / minute package is enough, to do crawlers, it is recommended to choose the enterprise version!

Guide to avoiding the pit

A few final bloody lessons:

• Don't switch IPs in the same session, it's easy to be captured by anti-crawling system.
• Just give up when it comes to Google CAPTCHA, don't play hardball with the big boys!
• Remember to clean your browser fingerprints regularly, with ipipgo's IP rotation for better results!

CAPTCHA cracking is essentially a battle of offense and defense, and it is critical toMaintaining the diversity and authenticity of IP resourcesThe most important thing about ipipgo is that their IP survival cycle is more than 3 times that of others. The biggest feeling of using ipipgo in these two years is that their IP survival cycle is more than 3 times longer than others, which is especially suitable for projects that need stability.