| Abstract | Nowadays, web browsing has become ubiquitous, with virtually everyone navigating the internet and
routinely entering website addresses. However, frequent typing can lead to errors, resulting in the
inadvertent input of incorrect domain names. One prevalent risk stemming from such mistakes is
known as typosquatting, where users inadvertently land on maliciously crafted websites due to minor
typing errors. By exploiting typographical errors made by users, typosquatting represents a malicious
tactic wherein attackers capitalize on such mistakes to redirect unwitting victims to entirely different
or deceptively similar websites. While various techniques and tools have been developed to mitigate
this threat, currently, there is a notable absence of user-friendly tools available to everyday web users.
This paper describes TypoAlert, a Chrome-based extension engineered to address this gap in defense
against typosquatting. TypoAlert is meticulously crafted to analyze, detect, and promptly alert users in
real-time about the legitimacy of the web domains they are visiting.
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