Which aspect of the security are you referring to? elliptic curve upgrades are always possible and easy to integrate. Also, RSA 2048 is extremely secure. As a reference, RSA 2048 is 2^32 more secure than RSA 1024. The highest known factorization is RSA 768. RSA 1024 is approximately 1000 times stronger than RSA 768. Meaning that our RSA modulus of 2048 is 5 trillion times stronger than current publicly known RSA factorization abilities.