Zilch
99.4%
Of credential stuffing attacks stopped immediately.
Read the Case Study →Attackers test stolen username and password pairs at scale, and many of them work because of consumer password reuse. Arkose Titan stops credential stuffing at the source, while real customers and trusted AI agents sign in without friction.
Zilch stopped 37,000 credential stuffing attacks in 4 hours.
Credential stuffing works because people reuse passwords. Attackers take username and password pairs stolen in one breach and test them against login pages and APIs at scale, rotating IP addresses and devices to blend in. Because the credentials are real, a correct password tells you nothing about who is signing in, which makes credential stuffing one of the most common routes to account takeover.
When Zilch deployed Arkose Titan, it stopped 99.4% of credential stuffing attacks and freed its security team from overnight escalations.
Arkose Titan protects login pages and APIs from stolen-credential attacks, spotting credential stuffing by behavior and making every attempt too expensive to continue.
Nearly 1,000 detection signals identify credential stuffing by behavior, even when the stolen username and password are correct.
Proof-of-Work and AI-resistant challenges force attackers to spend real resources on each attempt, collapsing the economics of large credential lists.
Real consumers and the trusted AI agents you allow sign in without friction, and you set the rules for everyone else.
Network-wide fraud signals catch new stuffing tools and infrastructure as attackers rotate IP addresses and devices.
Arkose Labs is the only company to back credential stuffing protection with a $1 million warranty. If we don't stop the fraud, we cover the cost.
After implementing Arkose Labs, we saw an immediate ROI. The credential stuffing attacks stopped, and they have been a great partner with us in fighting fraud.
Credential stuffing is an attack where fraudsters use real username-password pairs stolen in past data breaches to try logging into other sites, hoping victims reused the same password.
Credential stuffing uses real, previously breached credentials rather than guessed ones, which is what makes it faster and far more successful than traditional brute-force password guessing.
Arkose Titan's detection engine analyzes nearly 1,000 signals to spot stuffing attempts even when the credentials themselves are valid, then applies escalating, resource-draining defenses that make the attack too costly to continue.
The strongest solutions detect stuffing attempts independent of whether the password is correct, since stolen credentials are often genuine. Arkose Labs backs this with an industry-first $1 million credential stuffing warranty.
AI agents make credential stuffing harder to spot. Instead of firing off thousands of identical requests, agents can pace attempts, mimic human behavior and solve basic challenges, slipping past volume-based rules. Arkose Titan looks at behavioral and device signals across sessions to catch agent-driven stuffing, while the trusted agents you allow still sign in.
MFA makes stolen passwords harder to use, but it doesn't stop the attack. Attackers still test credentials at scale, which can trigger costly one-time passcode messages, and they use adversary-in-the-middle phishing to capture MFA codes. Stopping credential stuffing at the login attempt protects both your users and your MFA budget.
Protect logins and APIs against credential stuffing, account takeover and the fraud that follows.
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