I just saw that and facepalmed as well. Beyond the sheer number of attacks you can perpetrate on RSA versus AES (never mind in the browser), MEGA is using 2048-

I just saw that and facepalmed as well. Beyond the sheer number of attacks you can perpetrate on RSA versus AES (never mind in the browser), MEGA is using 2048-bit RSA, which has a 112-bit security level, versus 128-bit AES. Symmetric ciphers are used almost exclusively for the encryption of large files. They're more secure, faster, and easier to work with.