Explore a comprehensive security analysis of LTE's data link layer (layer two) protocols, uncovering three critical attack vectors that compromise the confidentiality and privacy of LTE communications. Delve into a passive identity mapping attack that matches volatile radio identities to longer-lasting network identities, enabling user identification within a cell. Discover how a passive attacker can exploit resource allocation as a side channel for website fingerprinting, revealing users' browsing habits. Examine the A LTE R attack, which takes advantage of LTE's use of AES-CTR encryption without integrity protection to modify message payloads. Learn about a proof-of-concept demonstration showing how an active attacker can redirect DNS requests and perform DNS spoofing, leading users to malicious websites. Gain insights into the real-world applicability of these attacks and understand the significant threat posed by open attack vectors in LTE layer two protocols.