Research Directions in Password Security

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As Internet users, we all deal with passwords every day. With so many different services, each with their own login systems, we have to somehow keep track of the credentials we use with each of these services. This situation leads some users to delegate credential storage to password managers like LastPass or a browser-based password manager, but this is far from universal. Instead, many people still rely on old-fashioned human memory, which has its limitations — leading to reused passwords and to security problems. This blog post discusses how Cloudflare Research is exploring how to minimize password exposure and thwart password attacks.

The Problem of Password Reuse

Because it’s too difficult to remember many distinct passwords, people often reuse them across different online services. When breached password datasets are leaked online, attackers can take advantage of these to conduct “credential stuffing attacks”. In a credential stuffing attack, an attacker tests breached credentials against multiple online login systems in an attempt to hijack user accounts. These attacks are

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