Questions and Answers: Proxy and VPN 🌐

[Professor]

Questions:

• What is the difference between residential and datacenter proxies?
• How to set up proxy in Octo Browser?
• Which countries currently work with BINs?
• Is it possible to use one proxy for multiple orders?
• How to check proxy for detection?
• Do you need a VPN when using a residential proxy?
• How to use Tor for registration?
• How to mask the real time zone?
• What proxies currently work with giftcards.com?
• How to check IP before buying?

All answers below are provided for educational and research purposes, in terms of cybersecurity, threat analysis and security testing. We do not support or condone the use of this knowledge for illegal or fraudulent purposes.

Below you will find a technical breakdown of proxies, their settings, verification, use in different scenarios - all this can be used for training cybersecurity specialists, security testing and vulnerability analysis.

1. What is the difference between residential and datacenter proxies?​

Residential Proxy:​

• These are IP addresses of real users, issued by providers.
• Each IP belongs to a real geolocation (city, country).
• More "trusted" by security systems.
• Used via mobile/home network pools.
• Examples: BrightData, Oxylabs, SmartProxy.

Datacenter Proxy:​

• These are IPs rented from data centers (e.g. AWS, DigitalOcean).
• Not associated with real users.
• Easier blocked by large sites (Amazon, PayPal, giftcards.com).
• Cheaper and more accessible.
• Suitable for less secure sites.

Objective: To study the differences between proxy types, develop methods for detecting suspicious traffic, and train cybersecurity specialists.

2. How to set up proxy in Octo Browser?​

Octo Browser is a popular anti-detection browser for working with multiple accounts.

Steps:​

1. Go to Octo Browser → Create a new profile.
2. Go to the Proxy Settings section.
3. Select proxy type:
   • HTTP
   • HTTPS
   • SOCKS4
   • SOCKS5
4. Enter:
   • Host/IP
   • Port
   • Username (if any)
   • Password (if any)
5. Save the profile.
6. Launch your browser - now all actions will be through the specified proxy.

Tip:

• Check IP via whatismyipaddress.com before running.
• Make sure the proxy doesn't break WebRTC or Canvas.
• Use different proxies for different accounts.

Objective: Learn to use modern anti-detect tools, develop an understanding of fingerprinting, test protection against multi-accounting.

3. Which countries currently work with BINs?​

BIN (Bank Identification Number) — the first digits of the card, identifying the bank and country.

Countries that are often accepted:​

Region	Countries
USA / Canada	Most platforms accept these BINs.
Europe	Germany, France, Italy, Spain, Netherlands
Latham	Mexico, Colombia, Chile, Peru, Brazil
Asia	India, Vietnam, Thailand, Philippines
Russia / CIS	Limited reception, but works on some sites

Objective: Analysis of vulnerabilities in payment systems, development of verification protocols, training of fraud prevention specialists.

4. Is it possible to use one proxy for several orders?​

Answer:​

• Yes, you can, but with restrictions:
  • If the site has a strict policy on the number of orders from one IP, blocking is possible.
  • If one proxy is used for different accounts, the system can recognize the connection.
  • It is better to use one proxy = one account to reduce risks.

Recommendation:

• Use a proxy pool and router for automatic switching.
• Add delays between actions.
• Associate each profile with a unique IP.

Objective: To study the scalability of operations, to develop risk management policies.

5. How to check proxy for detection?​

Methods:​

1. IP check:
   • whatismyipaddress.com
   • ipleak.net
   • browserleaks.com
2. Testing on famous sites:
   • Amazon, PayPal, giftcards.com
   • Highly secure platforms
3. Using checker API:
   • For BIN/CVV testing
   • To check the success of transactions
4. Blacklist check:
   • dnschecker.org/blacklists.php

Objective: Study of detection mechanisms, development of anonymization protocols, training of cybersecurity specialists.

6. Do I need a VPN when using a residential proxy?​

Usually no, if:​

• Are you using a clean VPS or VM?
• Are you confident in the reliability of the proxy?
• The proxy already provides the required geolocation

But it might be useful:​

• When working from home IP
• For additional camouflage
• When testing multiple regions

Objective: Analysis of anonymization layers, development of policies for safe use of traffic.

7. How to use Tor for registration?​

Tor is an anonymous network that hides your IP.

Possible application:​

• Registration of temporary accounts
• Testing protection against anonymous registrations
• WAF Behavior Research

How to use:​

1. Download Tor Browser.
2. Open the registration site.
3. Please register using a temporary email.
4. Use Tor + burner account.

Limitations:

• Many sites block Tor IP.
• Slow speed.
• Cannot be used for carding.

Objective: Research of anonymization, analysis of vulnerabilities in registration, training of cybersecurity specialists.

8. How to mask the real time zone?​

Methods:​

1. Changing the time in the OS
2. Using a Virtual Machine with a Modified Time Zone
3. Manually set the desired time zone in your browser settings
4. Using a plugin to change IANA timezone
5. Using antidetect browser (Octo, Dolphin)

Example:

new Date().toString() // should show the correct time zone

Objective: Study of fingerprinting methods, development of countermeasure technologies, training of cybersecurity specialists.

9. Which proxies currently work with giftcards.com?​

giftcards.com has a strict anti-fraud system, therefore:

Working:​

• Residential proxy with good reputation
• Mobile proxies (LTE/5G)
• ISP proxy (based on static IP from providers)
• Private residential pools (e.g., from BrightData)

Not working:​

• Public free proxies
• Shared datacenter IP
• Tor

Council:

• Use clean accounts
• Data match (IP, mail, phone)
• Check each combination before purchasing

Objective: Analysis of modern security systems, development of verification protocols, training of security specialists.

10. How to check IP before buying?​

Stages:​

1. IP check:
   • whatismyipaddress.com
2. Blacklist check:
   • dnschecker.org/blacklists.php
3. Geo-matching:
   • Make sure the IP matches the account country
4. WebRTC leaks:
   • Check via browserleaks.com
5. Canvas/WebGL:
   • Use antidetect browsers
6. Check via target site:
   • Try to log in without authorization
   • Check if CAPTCHA appears

Objective: Study of methods for verifying anonymity, development of security protocols, training of cybersecurity specialists.

Conclusion:​

These topics are at the intersection of fraud, security and behavioral analysis. Studying them allows you to:

• Develop more resilient security systems.
• Create behavioral analytics models.
• Test existing solutions for vulnerabilities.
• Train cybersecurity professionals.