Inside Facebook & Google's 2025 anti-fraud system: why your accounts get banned & how to keep them safe

Over the past 3 years, Facebook and Google security systems have evolved dramatically. While they once only caught obvious violations (multiple accounts from one IP), they now employ multi-layered systems with neural network analysis and predictive detection.

1️⃣ Digital fingerprinting — hundreds of hidden parameters

Modern platforms create your unique digital DNA profile from hundreds of parameters:

• Hardware characteristics and micro-features
• Browser settings and installed plugins
• Unique graphics rendering method (Canvas fingerprint)
• Audio system and GPU characteristics

Insider tip: Facebook can recognize your device even after completely clearing cookies and changing IPs due to minimal differences in hardware operation. I've seen many marketers reset their profile but forget to change their device — instant ban.

Real case study: our client used their previous computer after completely reinstalling Windows and switching proxies. Result? Banned within 30 minutes of working with a new Facebook account. The simple reason — the hardware fingerprint remained identical.

2️⃣ Behavioral markers — you move like a bot

Algorithms analyze:

• Speed and patterns of clicks
• Mouse movement trajectory (humans don't move in straight lines)
• Time between actions (humans have unpredictably variable timing)
• Action sequences and work pauses

Even advanced scripts with random delays get caught — neural networks analyze the statistical distribution of time intervals, which has a unique signature for real humans.

3️⃣ Network characteristics — the main ban trigger

Systems instantly identify:

• IP type (datacenter IPs are immediately flagged)
• IP history and connections to previously banned accounts
• Connection stability and packet delays
• DNS leaks and TLS fingerprinting

4️⃣ Connections between accounts — the invisible network

Facebook and Google build hidden connections between accounts:

• Similar creatives and strategies
• Common targeting elements
• Overlapping payment methods
• Identical activity times

Little-known fact: Facebook can link accounts even by the same font in creatives. I personally witnessed a marketing team lose 12 accounts after using one template with different text. All were banned within days.‍

Google leverages its entire ecosystem against violators:

➖ Cross-service linking (Gmail, YouTube, Android)
➖ Chrome integration for behavioral analysis
➖ Fraud prediction algorithms that act before violations occur
➖ Deep landing page scanning and content verification

Google is particularly strict with proxies — standard IPv4/IPv6 monthly proxies are useless here. Even "white hat" offers get banned if the system detects suspicious infrastructure.

Clear signs your proxies aren't suitable for advertising platforms:

❌ Clean accounts getting banned even with compliant offers
❌ Campaign freezes — advertisements never gaining traction
❌ Endless security checks at every login
❌ Restrictions in targeting settings

1. Datacenter proxies — instant detection

Server IPs from datacenters are identified by fraud detection systems within seconds. Their characteristics:

• Located in recognizable subnets
• Network parameters atypical for regular users
• No natural usage history

2. "Residential" proxies from most providers — just masking

Here's something few discuss: most so-called "residential" proxies on the market are essentially datacenter proxies masked as ISP connections.

2025 fraud detection systems easily distinguish such imitations from real user connections:

• Artificially configured parameters instead of natural ones
• No real usage history
• Suspiciously "clean" network characteristics
• High fraud score under deep inspection

Practical case: a client previously used "residential" proxies from a well-known provider, where 8 out of 10 accounts were banned within the first week. After switching to our genuine residential proxies, their account survival rate increased to 90% running the same ad campaigns.‍

3. Why GonzoProxy's residential proxies work differently?

Unlike imitations, our residential proxies connect you to real devices of actual people. In simple terms: you're using a connection from a real person in France, Germany, or the US who has authorized sharing their internet.

Key advantages of our residential proxies:

• Authentic usage history — each IP has been used for months for regular browsing, YouTube watching, social media
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• Real home provider — not a mask, but a genuine connection from Comcast, Orange, Deutsche Telekom

• Natural network characteristics — delays, packets, and routing just like a regular user

• Low fraud score — typically 0-5 on a 0-100 scale

This approach is technically impossible to fake. Fraud detection systems can detect any imitation, but they can't distinguish a real person from... another real person.

Before using a proxy for any advertising task, perform basic verification:

1. Check the fraud score via IPQualityScore — it should be below 10
2. Verify Proxy/VPN/TOR status — should be "false" for all parameters
3. Confirm the IP belongs to a real ISP (not a datacenter)
4. Verify the geolocation matches the claimed region
5. Test stability — ping should remain consistent

Practical advice: use the same verification services that advertising platforms use — MaxMind, IPQualityScore, and Scamalytics. If a proxy passes their checks, your chances of successful work with ad accounts increase significantly.‍

Based on hundreds of client cases, here's a proven strategy for long-term success with Facebook and Google:

➖ One account — one residential proxy. Never use one proxy for multiple accounts, even at different times

➖ Choose proxies by target market. If you're advertising to US audiences, use American IPs; for European campaigns, use European IPs

➖ Gradual scaling. Increase budgets smoothly, no more than 30% per day, without sharp spikes

➖ Maintain regular activity. Work with the account at the same time, with consistent intensity

➖ Proper environment configuration. Ensure time zone, language, and other parameters match your IP

Real result: a media buying team using this strategy with GonzoProxy residential proxies has maintained 45+ Facebook Ads accounts for over 6 months, with daily budgets of $100-300 each.‍