Multi-accounting at bookmakers: how anti-fraud works, risks, and methods for bypassing protection

One of the main reasons for account blocks at sportsbooks today is multi-accounting. The rules of any legal or offshore bookmaker state: "One person — one account, one IP address, one device." However, thousands of players daily try to bypass this rule.

In this article, we will break down in detail why bettors mass-create new profiles, how modern anti-fraud systems at bookmakers work, and what methods are used to bypass them.

What Is Multi-Accounting at Sportsbooks?

Multi-accounting at a bookmaker is the process of creating and using multiple gaming accounts by one person at a single bookmaker. By the rules of most bookmakers, this is considered a violation. Usually, only one account per person is allowed. Restrictions may also apply to one address, phone number, email, device, or payment details.

Important! Even if an account is registered under another person (for example, a relative), using the same device or network can lead to account linking. In such cases, the security service treats this as multi-accounting and applies restrictions.

To lift restrictions, they may request identity verification up to video verification. In the process, you need to show documents in real time and answer questions about the account. The security service clarifies registration data, action history, and payments. Additionally, they may ask basic questions about bets: understanding odds, types of bets, used markets, and even the rules of the game.

Why Do Bettors Create Multiple Gaming Accounts?

For an ordinary player, one profile is quite enough: betting is entertainment for them. But for arbitrage bettors and bonus hunters, multi-accounting is a basic necessity. Multiple accounts are used to solve specific tasks:

Bonus Hunting. Bookmakers attract new clients with generous welcome bonuses: free bets, first deposit doubling, first bet insurance. Bonus hunters register hundreds of accounts using straw men (drops) to systematically receive these bonuses, wager them with minimal risks, and withdraw profits.

Arbitrage Betting. Sports arbitrage implies betting on opposite outcomes of the same event at different bookmakers with guaranteed profit (due to odds differences). Bookmakers quickly identify "arbitrage bettors" and cut their maximum bet amounts to zero or block accounts. To continue earning, the arbitrage bettor is forced to constantly create new profiles.

Value Betting. A strategy of playing on overvalued odds. As with arbitrage, bookmakers don't like profitable players who systematically beat the line. A successful value bettor often receives blocks or limit cuts, forcing them to look for ways to register anew.

Bypassing Personal Limits and Sanctions. If a player wins too often, the bookmaker may apply individual restrictions: reduce odds by 10-15% or set the maximum bet amount at $1-5.

Exceeding Limits on a Specific Match. Sometimes for lower league matches (small markets), the bookmaker sets a bet limit of only a couple of thousand rubles. If a player has inside information, they use a network of multi-accounts to place their needed large sum in parts.

Why Do Bookmakers Strictly Prohibit Multi-Accounting?

At first glance, it seems that bookmakers benefit from any increase in betting volume, as their main profit comes from the margin. However, in reality, multi-accounting causes serious financial and reputational damage to bookmakers.

First and foremost, marketing budgets come under attack: bonus hunters, through networks of fictitious accounts, massively withdraw welcome free bets, bringing no long-term benefit to the company.

Furthermore, professional players destroy the bookmaker's mathematical model itself. Systematically finding analysts' mistakes in the line or placing arbitrage bets, they take away the profit the bookmaker counts on.

Besides direct financial losses, bookmakers face strict pressure from regulators. Licensed business obligates companies to transparently identify each user through KYC procedures and control money flows. Multi-accounting directly violates these requirements and anti-money laundering laws.

Finally, splitting large sums across dozens of small profiles is a classic signature of match-fixing organizers, so security services are forced to act harshly and block any suspicious account chains.

How Bookmaker Security Services Identify Violators: Anti-Fraud Methods

The days when clearing cookies and changing an IP was enough to bypass blocks are long gone. Today, bookmakers use complex anti-fraud systems — both third-party solutions and in-house developments. They analyze dozens of technical device parameters and user behavior. Thanks to this, multi-account networks are identified fairly quickly.

Network Trail: IP, VPN, and Proxies

The first level of verification is network analysis. Not only the IP address itself is considered, but also its origin. The system determines the provider, subnet, and connection type. If traffic comes from datacenters or server networks, this immediately stands out against regular users.

Additional risk is created by cheap proxies and unstable VPNs. They may leak through WebRTC or DNS, revealing the real location. Indirect signs are also considered, such as connection peculiarities and network parameters.

Browser Fingerprint Analysis

The browser transmits a large volume of data to the website, from which a unique device fingerprint is formed. The browser core plays an important role, as it determines how pages are processed and what data is available to the system. Most tools for working with multiple accounts are built on Chromium and use modifications to manage the fingerprint: screen resolution, fonts, devices, WebGL, and other parameters.

The system analyzes how the browser actually behaves. For example, hidden graphics rendering or audio generation may be performed. Based on the results, a unique hash is formed that is difficult to fake.

Also considered are browser versions, language, timezone, extension list, and other parameters. Any inconsistencies are recorded and increase risk for the account. At the same time, incognito mode doesn't solve the problem because such sessions often look less typical.

Device Identification

When working through apps, the bookmaker gains access to device parameters. System characteristics are recorded: processor, video card, memory amount, network parameters.

On mobile devices, additional system identifiers are used, such as Android ID or advertising IDs. If there were previously problems with such a device, new accounts fall under verification immediately after registration or when attempting to deposit.

Behavioral Analysis

Systems also analyze user behavior. Action speed, cursor movements, click sequence are considered.

Additionally, the bets themselves are evaluated. A typical user behaves differently than a professional player: amounts, event selection, and bet structure differ. Unusual patterns on a new account quickly attract attention and may lead to restrictions.

Financial Overlaps

Financial data is one of the key factors. The match between the payment method owner's name and account data is checked, as well as the absence of repeated card or wallet usage.

If the same payment source is used on multiple accounts, they are linked together, leading to restrictions or blocking.

Consequences of Multi-Accounting at Sportsbooks

Multi-accounting is one of the most serious violations of any bookmaker's rules. Bookmakers treat this as direct fraud and apply the strictest sanctions to violators.

The main consequences that a player inevitably faces include:

Permanent Blocking of All Accounts. The security service will block both the main account and all identified duplicates, including accounts registered under relatives or purchased "drops." Restoring access after such a ban is practically impossible.

Cancellation of Winnings and Bets. All bets made in violation of the rules will be settled as a refund (with odds of 1.00). Any winnings received from duplicate accounts will be deducted from the balance.

Confiscation of Funds and Bonuses. Welcome bonuses, free bets, and cashback burn. As for real money, at best, the bookmaker will only allow withdrawing the initial deposit amount. In aggravating circumstances, the account may be completely frozen along with the deposit until the "investigation" concludes, which may last for months.

Exhausting Verification Procedure. When suspected of multi-accounting, the bookmaker activates the strictest identity verification protocol. They may demand notarized passport copies, bank statements, utility bills, and force you through a video interview where they will ask narrow questions about the sports you bet on.

Inclusion in Global Blacklists. Many bookmakers, especially legal ones operating through unified accounting centers such as TSUPIS/ERAI, exchange databases of fraudsters and use shared anti-fraud systems. After receiving a ban for multi-accounting at one major bookmaker, you will with high probability receive automatic restrictions when attempting to register at other bookmakers.

If the security service doesn't have 100% proof, but the algorithmic system marks your profile as suspicious, the bookmaker will simply reduce the maximum bet amount for your account (for example, to 10-50 rubles), making further play meaningless.

How to Bypass Bookmaker Protection Systems

Since anti-fraud systems are constantly becoming more complex, working with multiple accounts requires using complex and expensive tools. Bypassing such checks requires constant adaptation.

Antidetect Browsers

Standard browsers (Chrome, Safari) or regular VPN extensions are not suitable for bypassing protection, as bookmaker algorithms read them instantly. Antidetect browsers are used for work.

Important! The core must be up-to-date and correspond to real versions of regular browsers. If an old version is inside but the profile claims to be new, this is quickly determined. As a result, accounts fall under checks or get blocked.

Core update speed differs depending on the solution. Some tools adapt faster to new engine versions and stay closer to current releases. Among the leaders in update speed is Linken Sphere. Other common solutions include AdsPower, Dolphin{anty}, Indigo, and Octo Browser.

Antidetect browsers create a completely isolated environment for each new account, where Canvas, WebGL, fonts, screen parameters, User-Agent, WebRTC, and hardware metrics are comprehensively substituted.

Residential and Mobile Proxies

Using free VPNs or standard server proxies today is a guaranteed account ban at the registration stage. Bookmaker anti-fraud systems use blacklists of IP address ranges from hosting providers and instantly identify them as unreliable.

The safest to use are:

Residential Proxies. These are IP addresses of ordinary users, home internet, or Wi-Fi. Such traffic looks natural and raises fewer suspicions.

Mobile Proxies (4G/5G). Their advantage is connected to mobile network peculiarities. One external IP may be used by a large number of users simultaneously, so the bookmaker cannot block such an IP address, as this would lead to blocking a huge number of honest players. Mobile proxies allow configuring IP rotation by time or by link, making it possible to register dozens of accounts on one channel, while each time getting a "clean" identity for anti-fraud systems.

Working with Drops

At the foundation of any multi-accounting lies data of real people, so-called drops. Since bookmakers require mandatory identity verification, using random or downloaded-from-the-internet documents is excluded. The professional approach implies finding reliable donors, which fall into three categories:

• "Own" (relatives and acquaintances). The safest option, as the person is always available for repeated checks.
• Paid drops. People attracted through specialized services or forums for a fee.
• "Drawn" data. Practically not used in serious work. Modern verification systems easily recognize Photoshop.

The key rule: the drop must be "alive" and accessible. If the security service has doubts, they will assign additional verification:

• Selfie with passport and a piece of paper showing the current date and bookmaker name.
• Video conference via Skype/Zoom. This is a critical stage. The drop must not just show the passport to the camera, but confidently answer questions about the bet history on their account, sports rules, and betting basics.

Therefore, the account owner is given basic information in advance: recent actions, deposit amounts, and general bet logic. This is needed so they can confidently answer questions during verification. If the person gets confused in details during video verification or cannot explain their actions, the account is usually blocked, and funds are frozen.

Because of this, it's important to discuss at the stage whether the account owner is ready to get in touch and pass verification at any moment.

Financial Hygiene and Device Uniqualization

For anti-fraud systems, payment data is one of the key factors. Any overlaps between accounts, even with correct technical setup, quickly lead to their linking and subsequent restrictions.

Therefore, each account is isolated at the payment level. Separate cards or details that haven't been previously recorded in the system are used. Financial flows don't overlap: the same wallet or card shouldn't be used on different accounts. In the case of cryptocurrency, a separate address is created for each account to avoid links through transactions.

Separate attention is paid to devices. Mobile apps collect significantly more data than browsers, so when working through them, it's important to maintain environment uniqueness. For this, either "clean" devices after reset are used, or isolated environments with individual system parameters.

This approach reduces the probability of overlaps between accounts and simplifies passing checks.

Behavioral Analysis and Account "Warming" Strategy

Even a flawless technical setup will be useless if the account gives itself away through anomalous behavior. Modern bookmaker anti-fraud systems use neural networks for pattern analysis: they compare user actions with the behavior of millions of ordinary players. To avoid getting banned in the first hours, the following factors are considered:

"Public" Imitation. A public bettor is a bookmaker user who regularly loses due to inability to place bets, analyze matches, and only looks at team popularity. At the initial stage, bets are placed exclusively on Big Markets, i.e., top events (EPL, La Liga, NHL, Champions League). Bet amounts should be small and "round" (for example, $100 or $1000), which is characteristic of an ordinary fan.

Trust Formation. The main goal of warming is to get high "credit of trust" from the system. For this, natural activity is imitated: watching broadcasts on the website, clicking on advertising banners, reading sports news inside the app. The account needs to "steep" and accumulate cookie history.

Timing and Sessions. Professionals avoid logging into the website only for one bet. A session should look organic: logged in, checked the line, studied statistics, placed a bet, logged out after 15 minutes.

Transition to Main Strategy. Only after the account has passed the primary check stage and been marked by the system as "safe," does the player begin to gradually implement arbitrage bets or value betting. A smooth transition allows significantly extending account life and working longer at high limits.

Conclusion

Multi-accounting at sportsbooks today is constant work against anti-fraud systems. Everything is checked: network, device, behavior, and payments. Any overlaps or inconsistencies are quickly identified and lead to restrictions. With confirmed violations, accounts are blocked, and funds may be deducted without possibility of return. Therefore, the main principle is to minimize risks and remember that any error can cost an account and money.