Circuit protection – The usable lifespan can be shortened if the battery is regularly overcharged. Also, these batteries have a built-in protection circuit to maintain the current and voltage and guarantee it is kept within safe limits.
When we think of VPNs, often our first thought is that of encryption of the user data. But adversaries or those intent on reading the data could However an attacker could record a conversation and then replay the replies between to participants. What we need to do is to be able to ensure the source of the data is genuine, and that is where digital signatures and certificates comes in.