A contract containing the phrase "You automatically consent to these terms by using or logging into the service to which they pertain" is establishing a contract of adhesion. A contract of adhesion is a type of legal agreement that involves one party setting the terms and conditions and the other party having no choice but to accept or reject them without bargaining. These contracts are often used in situations where one party has more power or resources than the other, such as in online services, insurance, leases, or consumer credit. These contracts may be unfair or unclear to the weaker party and may be challenged in court for unconscionability or ambiguity12.
References:
* adhesion contract | Wex | US Law | LII / Legal Information Institute
* What is a contract of adhesion? A complete guide - PandaDoc