Daniel V. Bailey
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View article: “Someone Definitely Used 0000”: Strategies, Performance, and User Perception of Novice Smartphone-Unlock PIN-Guessers
“Someone Definitely Used 0000”: Strategies, Performance, and User Perception of Novice Smartphone-Unlock PIN-Guessers Open
We examine the risk to lost, stolen, or unattended smartphones due to attempts to guess the device's unlock PIN, the most widespread authentication scheme for smartphones. We find novice attacks by those lacking forensic tools or training …
View article: On the Security of Smartphone Unlock PINs
On the Security of Smartphone Unlock PINs Open
In this article, we provide the first comprehensive study of user-chosen four- and six-digit PINs ( n =1705) collected on smartphones with participants being explicitly primed for device unlocking. We find that against a throttled attacker…
View article: "I have no idea what they're trying to accomplish:" Enthusiastic and Casual Signal Users' Understanding of Signal PINs
"I have no idea what they're trying to accomplish:" Enthusiastic and Casual Signal Users' Understanding of Signal PINs Open
We conducted an online study with $n = 235$ Signal users on their understanding and usage of PINs in Signal. In our study, we observe a split in PIN management and composition strategies between users who can explain the purpose of the Sig…
View article: This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone Unlock PINs
This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone Unlock PINs Open
In this paper, we provide the first comprehensive study of user-chosen 4- and 6-digit PINs (n=1220) collected on smartphones with participants being explicitly primed for device unlocking. We find that against a throttled attacker (with 10…
View article: This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone\n Unlock PINs
This PIN Can Be Easily Guessed: Analyzing the Security of Smartphone\n Unlock PINs Open
In this paper, we provide the first comprehensive study of user-chosen 4- and\n6-digit PINs (n=1220) collected on smartphones with participants being\nexplicitly primed for device unlocking. We find that against a throttled\nattacker (with…