Final answer:
Web browsers have ceased support for RC4 and SSL in favor of TLS due to security vulnerabilities and to uphold data integrity and privacy with more robust encryption.
Step-by-step explanation:
Most major web browsers have dropped support for RC4 encryption and the SSL protocol due to security vulnerabilities. With the advancement of computing power and analytical techniques, RC4 has been deemed unsafe due to an increasing risk of successful attacks over time.
SSL versions, having their own set of vulnerabilities, have similarly been deprecated in favor of the more secure and robust TLS (Transport Layer Security) protocol.
TLS provides improved security features compared to its predecessors, which is crucial for maintaining data integrity and privacy in an increasingly complex digital landscape.
As part of their commitment to user security, browser developers have chosen to mandate the use of TLS to ensure that encrypted communications over the web maintain high security standards.