Research
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Detecting noise in canvas fingerprinting
In a previous blog post, we talked about canvas fingerprinting, a technique commonly used to detect fraudsters and bots. In
Sebastian Wallin
Sebastian is the CTO & co-founder of Castle. In his role at Castle he's been working closely with companies across different industries to identify and implement strategies for fraud and abuse.
Latest
Research
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The role of WebGL renderer in browser fingerprinting
Browser fingerprinting leverages different JavaScript attributes related to the user's device, OS, and browser. When it comes to
Research
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Anatomy of a 4-day mobile app credential stuffing attack
In this article, we cover the details of a distributed credential-stuffing attack that targeted the mobile application of a major
Research
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How bots and fraudsters exploit free tiers in AI SaaS
The latest wave of artificial intelligence (AI) improvements significantly improved the quality of models for image and text generation. Several
Research
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How bots and fraudsters exploit video games with credential stuffing
If you spend time on video game forums, you might have noticed posts from users discussing their accounts being hacked
Research
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Open Bullet 2: The preferred credential stuffing tool for bots
Open Bullet 2 is an open-source software, specialized in credential stuffing attacks, i.e. attacks that use bots to automatically
Research
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Canvas fingerprinting in the wild
Every day, your computer renders dozens of these without you even noticing. Strange patterns, colorful shapes, and emojis—what do
Research
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Anatomy of a 6-day credential stuffing attack from 2.2M residential IPs
In this article, we cover the details of a heavily distributed credential-stuffing attack that targeted a major US financial service
Product Focus: Overview Page
Our mission at Castle is to equip you with the most effective tool to detect and stop bad actors within
Industry
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In Devices We Trust: Improving CAPTCHA Friction
Are your users annoyed by constantly being hit with CAPTCHAs? Find out what how you can improve the user experience while keeping your site secure
Industry
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Using Zero Trust to Reduce Fraud and Abuse
What does the zero-trust security model look like when it’s applied to online fraud and abuse? In this post, I’ll delve into how concepts from zero-trust can be used to fight fraud and abuse with higher accuracy and less user frustration.
Product
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Product focus: Policies
Policies lets you create tailored rules that suit your specific needs. It’s designed to work in various scenarios, whether you're dealing with account abuse, account takeovers, or combating SMS-pumping